/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.cassandra.cql3.validation.entities;
import java.nio.ByteBuffer;
import java.util.*;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;
import org.apache.commons.lang3.StringUtils;
import org.junit.Test;
import org.apache.cassandra.config.CFMetaData;
import org.apache.cassandra.config.ColumnDefinition;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.cql3.CQLTester;
import org.apache.cassandra.cql3.ColumnIdentifier;
import org.apache.cassandra.cql3.QueryProcessor;
import org.apache.cassandra.cql3.restrictions.StatementRestrictions;
import org.apache.cassandra.cql3.statements.IndexTarget;
import org.apache.cassandra.db.ColumnFamilyStore;
import org.apache.cassandra.db.DeletionTime;
import org.apache.cassandra.db.marshal.AbstractType;
import org.apache.cassandra.db.rows.Cell;
import org.apache.cassandra.db.rows.Row;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.exceptions.SyntaxException;
import org.apache.cassandra.index.IndexNotAvailableException;
import org.apache.cassandra.index.SecondaryIndexManager;
import org.apache.cassandra.index.StubIndex;
import org.apache.cassandra.index.internal.CustomCassandraIndex;
import org.apache.cassandra.schema.IndexMetadata;
import org.apache.cassandra.service.ClientState;
import org.apache.cassandra.transport.messages.ResultMessage;
import org.apache.cassandra.utils.ByteBufferUtil;
import org.apache.cassandra.utils.MD5Digest;
import org.apache.cassandra.utils.Pair;
import static org.apache.cassandra.Util.throwAssert;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
public class SecondaryIndexTest extends CQLTester
{
private static final int TOO_BIG = 1024 * 65;
@Test
public void testCreateAndDropIndex() throws Throwable
{
testCreateAndDropIndex("test", false);
testCreateAndDropIndex("test2", true);
}
@Test
public void testCreateAndDropIndexWithQuotedIdentifier() throws Throwable
{
testCreateAndDropIndex("\"quoted_ident\"", false);
testCreateAndDropIndex("\"quoted_ident2\"", true);
}
@Test
public void testCreateAndDropIndexWithCamelCaseIdentifier() throws Throwable
{
testCreateAndDropIndex("CamelCase", false);
testCreateAndDropIndex("CamelCase2", true);
}
/**
* Test creating and dropping an index with the specified name.
*
* @param indexName the index name
* @param addKeyspaceOnDrop add the keyspace name in the drop statement
* @throws Throwable if an error occurs
*/
private void testCreateAndDropIndex(String indexName, boolean addKeyspaceOnDrop) throws Throwable
{
execute("USE system");
assertInvalidMessage(String.format("Index '%s' could not be found",
removeQuotes(indexName.toLowerCase(Locale.US))),
"DROP INDEX " + indexName + ";");
createTable("CREATE TABLE %s (a int primary key, b int);");
createIndex("CREATE INDEX " + indexName + " ON %s(b);");
createIndex("CREATE INDEX IF NOT EXISTS " + indexName + " ON %s(b);");
assertInvalidMessage(String.format("Index %s already exists",
removeQuotes(indexName.toLowerCase(Locale.US))),
"CREATE INDEX " + indexName + " ON %s(b)");
// IF NOT EXISTS should apply in cases where the new index differs from an existing one in name only
String otherIndexName = "index_" + System.nanoTime();
assertEquals(1, getCurrentColumnFamilyStore().metadata.getIndexes().size());
createIndex("CREATE INDEX IF NOT EXISTS " + otherIndexName + " ON %s(b)");
assertEquals(1, getCurrentColumnFamilyStore().metadata.getIndexes().size());
assertInvalidMessage(String.format("Index %s is a duplicate of existing index %s",
removeQuotes(otherIndexName.toLowerCase(Locale.US)),
removeQuotes(indexName.toLowerCase(Locale.US))),
"CREATE INDEX " + otherIndexName + " ON %s(b)");
execute("INSERT INTO %s (a, b) values (?, ?);", 0, 0);
execute("INSERT INTO %s (a, b) values (?, ?);", 1, 1);
execute("INSERT INTO %s (a, b) values (?, ?);", 2, 2);
execute("INSERT INTO %s (a, b) values (?, ?);", 3, 1);
assertRows(execute("SELECT * FROM %s where b = ?", 1), row(1, 1), row(3, 1));
assertInvalidMessage(String.format("Index '%s' could not be found in any of the tables of keyspace 'system'",
removeQuotes(indexName.toLowerCase(Locale.US))),
"DROP INDEX " + indexName);
if (addKeyspaceOnDrop)
{
dropIndex("DROP INDEX " + KEYSPACE + "." + indexName);
}
else
{
execute("USE " + KEYSPACE);
execute("DROP INDEX " + indexName);
}
assertInvalidMessage(StatementRestrictions.REQUIRES_ALLOW_FILTERING_MESSAGE,
"SELECT * FROM %s where b = ?", 1);
dropIndex("DROP INDEX IF EXISTS " + indexName);
assertInvalidMessage(String.format("Index '%s' could not be found",
removeQuotes(indexName.toLowerCase(Locale.US))),
"DROP INDEX " + indexName);
}
/**
* Removes the quotes from the specified index name.
*
* @param indexName the index name from which the quotes must be removed.
* @return the unquoted index name.
*/
private static String removeQuotes(String indexName)
{
return StringUtils.remove(indexName, '\"');
}
/**
* Check that you can query for an indexed column even with a key EQ clause,
* migrated from cql_tests.py:TestCQL.static_cf_test()
*/
@Test
public void testSelectWithEQ() throws Throwable
{
createTable("CREATE TABLE %s (userid uuid PRIMARY KEY, firstname text, lastname text, age int)");
createIndex("CREATE INDEX byAge ON %s(age)");
UUID id1 = UUID.fromString("550e8400-e29b-41d4-a716-446655440000");
UUID id2 = UUID.fromString("f47ac10b-58cc-4372-a567-0e02b2c3d479");
execute("INSERT INTO %s (userid, firstname, lastname, age) VALUES (?, 'Frodo', 'Baggins', 32)", id1);
execute("UPDATE %s SET firstname = 'Samwise', lastname = 'Gamgee', age = 33 WHERE userid = ?", id2);
assertEmpty(execute("SELECT firstname FROM %s WHERE userid = ? AND age = 33", id1));
assertRows(execute("SELECT firstname FROM %s WHERE userid = ? AND age = 33", id2),
row("Samwise"));
}
/**
* Check CREATE INDEX without name and validate the index can be dropped,
* migrated from cql_tests.py:TestCQL.nameless_index_test()
*/
@Test
public void testNamelessIndex() throws Throwable
{
createTable(" CREATE TABLE %s (id text PRIMARY KEY, birth_year int)");
createIndex("CREATE INDEX on %s (birth_year)");
execute("INSERT INTO %s (id, birth_year) VALUES ('Tom', 42)");
execute("INSERT INTO %s (id, birth_year) VALUES ('Paul', 24)");
execute("INSERT INTO %s (id, birth_year) VALUES ('Bob', 42)");
assertRows(execute("SELECT id FROM %s WHERE birth_year = 42"),
row("Tom"),
row("Bob"));
execute("DROP INDEX %s_birth_year_idx");
assertInvalid("SELECT id FROM users WHERE birth_year = 42");
}
/**
* Test range queries with 2ndary indexes (#4257),
* migrated from cql_tests.py:TestCQL.range_query_2ndary_test()
*/
@Test
public void testRangeQuery() throws Throwable
{
createTable("CREATE TABLE %s (id int primary key, row int, setid int)");
createIndex("CREATE INDEX indextest_setid_idx ON %s (setid)");
execute("INSERT INTO %s (id, row, setid) VALUES (?, ?, ?)", 0, 0, 0);
execute("INSERT INTO %s (id, row, setid) VALUES (?, ?, ?)", 1, 1, 0);
execute("INSERT INTO %s (id, row, setid) VALUES (?, ?, ?)", 2, 2, 0);
execute("INSERT INTO %s (id, row, setid) VALUES (?, ?, ?)", 3, 3, 0);
assertInvalid("SELECT * FROM %s WHERE setid = 0 AND row < 1");
assertRows(execute("SELECT * FROM %s WHERE setid = 0 AND row < 1 ALLOW FILTERING"),
row(0, 0, 0));
}
/**
* Check for unknown compression parameters options (#4266),
* migrated from cql_tests.py:TestCQL.compression_option_validation_test()
*/
@Test
public void testUnknownCompressionOptions() throws Throwable
{
String tableName = createTableName();
assertInvalidThrow(SyntaxException.class, String.format("CREATE TABLE %s (key varchar PRIMARY KEY, password varchar, gender varchar) WITH compression_parameters:sstable_compressor = 'DeflateCompressor'", tableName));
assertInvalidThrow(ConfigurationException.class, String.format("CREATE TABLE %s (key varchar PRIMARY KEY, password varchar, gender varchar) WITH compression = { 'sstable_compressor': 'DeflateCompressor' }",
tableName));
}
/**
* Check one can use arbitrary name for datacenter when creating keyspace (#4278),
* migrated from cql_tests.py:TestCQL.keyspace_creation_options_test()
*/
@Test
public void testDataCenterName() throws Throwable
{
execute("CREATE KEYSPACE Foo WITH replication = { 'class' : 'NetworkTopologyStrategy', 'us-east' : 1, 'us-west' : 1 };");
}
/**
* Migrated from cql_tests.py:TestCQL.indexes_composite_test()
*/
@Test
public void testIndexOnComposite() throws Throwable
{
String tableName = createTable("CREATE TABLE %s (blog_id int, timestamp int, author text, content text, PRIMARY KEY (blog_id, timestamp))");
execute("INSERT INTO %s (blog_id, timestamp, author, content) VALUES (?, ?, ?, ?)", 0, 0, "bob", "1st post");
execute("INSERT INTO %s (blog_id, timestamp, author, content) VALUES (?, ?, ?, ?)", 0, 1, "tom", "2nd post");
execute("INSERT INTO %s (blog_id, timestamp, author, content) VALUES (?, ?, ?, ?)", 0, 2, "bob", "3rd post");
execute("INSERT INTO %s (blog_id, timestamp, author, content) VALUES (?, ?, ?, ?)", 0, 3, "tom", "4th post");
execute("INSERT INTO %s (blog_id, timestamp, author, content) VALUES (?, ?, ?, ?)", 1, 0, "bob", "5th post");
createIndex("CREATE INDEX authoridx ON %s (author)");
assertTrue(waitForIndex(keyspace(), tableName, "authoridx"));
assertRows(execute("SELECT blog_id, timestamp FROM %s WHERE author = 'bob'"),
row(1, 0),
row(0, 0),
row(0, 2));
execute("INSERT INTO %s (blog_id, timestamp, author, content) VALUES (?, ?, ?, ?)", 1, 1, "tom", "6th post");
execute("INSERT INTO %s (blog_id, timestamp, author, content) VALUES (?, ?, ?, ?)", 1, 2, "tom", "7th post");
execute("INSERT INTO %s (blog_id, timestamp, author, content) VALUES (?, ?, ?, ?)", 1, 3, "bob", "8th post");
assertRows(execute("SELECT blog_id, timestamp FROM %s WHERE author = 'bob'"),
row(1, 0),
row(1, 3),
row(0, 0),
row(0, 2));
execute("DELETE FROM %s WHERE blog_id = 0 AND timestamp = 2");
assertRows(execute("SELECT blog_id, timestamp FROM %s WHERE author = 'bob'"),
row(1, 0),
row(1, 3),
row(0, 0));
}
/**
* Test for the validation bug of #4709,
* migrated from cql_tests.py:TestCQL.refuse_in_with_indexes_test()
*/
@Test
public void testInvalidIndexSelect() throws Throwable
{
createTable("create table %s (pk varchar primary key, col1 varchar, col2 varchar)");
createIndex("create index on %s (col1)");
createIndex("create index on %s (col2)");
execute("insert into %s (pk, col1, col2) values ('pk1','foo1','bar1')");
execute("insert into %s (pk, col1, col2) values ('pk1a','foo1','bar1')");
execute("insert into %s (pk, col1, col2) values ('pk1b','foo1','bar1')");
execute("insert into %s (pk, col1, col2) values ('pk1c','foo1','bar1')");
execute("insert into %s (pk, col1, col2) values ('pk2','foo2','bar2')");
execute("insert into %s (pk, col1, col2) values ('pk3','foo3','bar3')");
assertInvalid("select * from %s where col2 in ('bar1', 'bar2')");
//Migrated from cql_tests.py:TestCQL.bug_6050_test()
createTable("CREATE TABLE %s (k int PRIMARY KEY, a int, b int)");
createIndex("CREATE INDEX ON %s (a)");
assertInvalid("SELECT * FROM %s WHERE a = 3 AND b IN (1, 3)");
}
/**
* Migrated from cql_tests.py:TestCQL.edge_2i_on_complex_pk_test()
*/
@Test
public void testIndexesOnComplexPrimaryKey() throws Throwable
{
createTable("CREATE TABLE %s (pk0 int, pk1 int, ck0 int, ck1 int, ck2 int, value int, PRIMARY KEY ((pk0, pk1), ck0, ck1, ck2))");
execute("CREATE INDEX ON %s (pk0)");
execute("CREATE INDEX ON %s (ck0)");
execute("CREATE INDEX ON %s (ck1)");
execute("CREATE INDEX ON %s (ck2)");
execute("INSERT INTO %s (pk0, pk1, ck0, ck1, ck2, value) VALUES (0, 1, 2, 3, 4, 5)");
execute("INSERT INTO %s (pk0, pk1, ck0, ck1, ck2, value) VALUES (1, 2, 3, 4, 5, 0)");
execute("INSERT INTO %s (pk0, pk1, ck0, ck1, ck2, value) VALUES (2, 3, 4, 5, 0, 1)");
execute("INSERT INTO %s (pk0, pk1, ck0, ck1, ck2, value) VALUES (3, 4, 5, 0, 1, 2)");
execute("INSERT INTO %s (pk0, pk1, ck0, ck1, ck2, value) VALUES (4, 5, 0, 1, 2, 3)");
execute("INSERT INTO %s (pk0, pk1, ck0, ck1, ck2, value) VALUES (5, 0, 1, 2, 3, 4)");
assertRows(execute("SELECT value FROM %s WHERE pk0 = 2"),
row(1));
assertRows(execute("SELECT value FROM %s WHERE ck0 = 0"),
row(3));
assertRows(execute("SELECT value FROM %s WHERE pk0 = 3 AND pk1 = 4 AND ck1 = 0"),
row(2));
assertRows(execute("SELECT value FROM %s WHERE pk0 = 5 AND pk1 = 0 AND ck0 = 1 AND ck2 = 3 ALLOW FILTERING"),
row(4));
}
/**
* Test for CASSANDRA-5240,
* migrated from cql_tests.py:TestCQL.bug_5240_test()
*/
@Test
public void testIndexOnCompoundRowKey() throws Throwable
{
createTable("CREATE TABLE %s (interval text, seq int, id int, severity int, PRIMARY KEY ((interval, seq), id) ) WITH CLUSTERING ORDER BY (id DESC)");
execute("CREATE INDEX ON %s (severity)");
execute("insert into %s (interval, seq, id , severity) values('t',1, 1, 1)");
execute("insert into %s (interval, seq, id , severity) values('t',1, 2, 1)");
execute("insert into %s (interval, seq, id , severity) values('t',1, 3, 2)");
execute("insert into %s (interval, seq, id , severity) values('t',1, 4, 3)");
execute("insert into %s (interval, seq, id , severity) values('t',2, 1, 3)");
execute("insert into %s (interval, seq, id , severity) values('t',2, 2, 3)");
execute("insert into %s (interval, seq, id , severity) values('t',2, 3, 1)");
execute("insert into %s (interval, seq, id , severity) values('t',2, 4, 2)");
assertRows(execute("select * from %s where severity = 3 and interval = 't' and seq =1"),
row("t", 1, 4, 3));
}
/**
* Migrated from cql_tests.py:TestCQL.secondary_index_counters()
*/
@Test
public void testIndexOnCountersInvalid() throws Throwable
{
createTable("CREATE TABLE %s (k int PRIMARY KEY, c counter)");
assertInvalid("CREATE INDEX ON test(c)");
}
/**
* Migrated from cql_tests.py:TestCQL.collection_indexing_test()
*/
@Test
public void testIndexOnCollections() throws Throwable
{
createTable(" CREATE TABLE %s ( k int, v int, l list<int>, s set<text>, m map<text, int>, PRIMARY KEY (k, v))");
createIndex("CREATE INDEX ON %s (l)");
createIndex("CREATE INDEX ON %s (s)");
createIndex("CREATE INDEX ON %s (m)");
execute("INSERT INTO %s (k, v, l, s, m) VALUES (0, 0, [1, 2], {'a'}, {'a' : 1})");
execute("INSERT INTO %s (k, v, l, s, m) VALUES (0, 1, [3, 4], {'b', 'c'}, {'a' : 1, 'b' : 2})");
execute("INSERT INTO %s (k, v, l, s, m) VALUES (0, 2, [1], {'a', 'c'}, {'c' : 3})");
execute("INSERT INTO %s (k, v, l, s, m) VALUES (1, 0, [1, 2, 4], {}, {'b' : 1})");
execute("INSERT INTO %s (k, v, l, s, m) VALUES (1, 1, [4, 5], {'d'}, {'a' : 1, 'b' : 3})");
// lists
assertRows(execute("SELECT k, v FROM %s WHERE l CONTAINS 1"), row(1, 0), row(0, 0), row(0, 2));
assertRows(execute("SELECT k, v FROM %s WHERE k = 0 AND l CONTAINS 1"), row(0, 0), row(0, 2));
assertRows(execute("SELECT k, v FROM %s WHERE l CONTAINS 2"), row(1, 0), row(0, 0));
assertEmpty(execute("SELECT k, v FROM %s WHERE l CONTAINS 6"));
// sets
assertRows(execute("SELECT k, v FROM %s WHERE s CONTAINS 'a'"), row(0, 0), row(0, 2));
assertRows(execute("SELECT k, v FROM %s WHERE k = 0 AND s CONTAINS 'a'"), row(0, 0), row(0, 2));
assertRows(execute("SELECT k, v FROM %s WHERE s CONTAINS 'd'"), row(1, 1));
assertEmpty(execute("SELECT k, v FROM %s WHERE s CONTAINS 'e'"));
// maps
assertRows(execute("SELECT k, v FROM %s WHERE m CONTAINS 1"), row(1, 0), row(1, 1), row(0, 0), row(0, 1));
assertRows(execute("SELECT k, v FROM %s WHERE k = 0 AND m CONTAINS 1"), row(0, 0), row(0, 1));
assertRows(execute("SELECT k, v FROM %s WHERE m CONTAINS 2"), row(0, 1));
assertEmpty(execute("SELECT k, v FROM %s WHERE m CONTAINS 4"));
}
/**
* Migrated from cql_tests.py:TestCQL.map_keys_indexing()
*/
@Test
public void testIndexOnMapKeys() throws Throwable
{
createTable("CREATE TABLE %s (k int, v int, m map<text, int>, PRIMARY KEY (k, v))");
createIndex("CREATE INDEX ON %s(keys(m))");
execute("INSERT INTO %s (k, v, m) VALUES (0, 0, {'a' : 1})");
execute("INSERT INTO %s (k, v, m) VALUES (0, 1, {'a' : 1, 'b' : 2})");
execute("INSERT INTO %s (k, v, m) VALUES (0, 2, {'c' : 3})");
execute("INSERT INTO %s (k, v, m) VALUES (1, 0, {'b' : 1})");
execute("INSERT INTO %s (k, v, m) VALUES (1, 1, {'a' : 1, 'b' : 3})");
// maps
assertRows(execute("SELECT k, v FROM %s WHERE m CONTAINS KEY 'a'"), row(1, 1), row(0, 0), row(0, 1));
assertRows(execute("SELECT k, v FROM %s WHERE k = 0 AND m CONTAINS KEY 'a'"), row(0, 0), row(0, 1));
assertRows(execute("SELECT k, v FROM %s WHERE m CONTAINS KEY 'c'"), row(0, 2));
assertEmpty(execute("SELECT k, v FROM %s WHERE m CONTAINS KEY 'd'"));
}
/**
* Test for #6950 bug,
* migrated from cql_tests.py:TestCQL.key_index_with_reverse_clustering()
*/
@Test
public void testIndexOnKeyWithReverseClustering() throws Throwable
{
createTable("CREATE TABLE %s (k1 int, k2 int, v int, PRIMARY KEY ((k1, k2), v) ) WITH CLUSTERING ORDER BY (v DESC)");
createIndex("CREATE INDEX ON %s (k2)");
execute("INSERT INTO %s (k1, k2, v) VALUES (0, 0, 1)");
execute("INSERT INTO %s (k1, k2, v) VALUES (0, 1, 2)");
execute("INSERT INTO %s (k1, k2, v) VALUES (0, 0, 3)");
execute("INSERT INTO %s (k1, k2, v) VALUES (1, 0, 4)");
execute("INSERT INTO %s (k1, k2, v) VALUES (1, 1, 5)");
execute("INSERT INTO %s (k1, k2, v) VALUES (2, 0, 7)");
execute("INSERT INTO %s (k1, k2, v) VALUES (2, 1, 8)");
execute("INSERT INTO %s (k1, k2, v) VALUES (3, 0, 1)");
assertRows(execute("SELECT * FROM %s WHERE k2 = 0 AND v >= 2 ALLOW FILTERING"),
row(2, 0, 7),
row(0, 0, 3),
row(1, 0, 4));
}
/**
* Test for CASSANDRA-6612,
* migrated from cql_tests.py:TestCQL.bug_6612_test()
*/
@Test
public void testSelectCountOnIndexedColumn() throws Throwable
{
createTable("CREATE TABLE %s (username text, session_id text, app_name text, account text, last_access timestamp, created_on timestamp, PRIMARY KEY (username, session_id, app_name, account))");
createIndex("create index ON %s (app_name)");
createIndex("create index ON %s (last_access)");
assertRows(execute("select count(*) from %s where app_name='foo' and account='bar' and last_access > 4 allow filtering"), row(0L));
execute("insert into %s (username, session_id, app_name, account, last_access, created_on) values ('toto', 'foo', 'foo', 'bar', 12, 13)");
assertRows(execute("select count(*) from %s where app_name='foo' and account='bar' and last_access > 4 allow filtering"), row(1L));
}
@Test
public void testSyntaxVariationsForIndexOnCollectionsValue() throws Throwable
{
createTable("CREATE TABLE %s (k int, m map<int, int>, l list<int>, s set<int>, PRIMARY KEY (k))");
createAndDropCollectionValuesIndex("m");
createAndDropCollectionValuesIndex("l");
createAndDropCollectionValuesIndex("s");
}
private void createAndDropCollectionValuesIndex(String columnName) throws Throwable
{
String indexName = columnName + "_idx";
SecondaryIndexManager indexManager = getCurrentColumnFamilyStore().indexManager;
createIndex(String.format("CREATE INDEX %s on %%s(%s)", indexName, columnName));
IndexMetadata indexDef = indexManager.getIndexByName(indexName).getIndexMetadata();
assertEquals(String.format("values(%s)", columnName), indexDef.options.get(IndexTarget.TARGET_OPTION_NAME));
dropIndex(String.format("DROP INDEX %s.%s", KEYSPACE, indexName));
assertFalse(indexManager.hasIndexes());
createIndex(String.format("CREATE INDEX %s on %%s(values(%s))", indexName, columnName));
assertEquals(indexDef, indexManager.getIndexByName(indexName).getIndexMetadata());
dropIndex(String.format("DROP INDEX %s.%s", KEYSPACE, indexName));
}
@Test
public void testCreateIndexWithQuotedColumnNames() throws Throwable
{
createTable("CREATE TABLE %s (" +
" k int," +
" v int, " +
" lower_case_map map<int, int>," +
" \"MixedCaseMap\" map<int, int>," +
" lower_case_frozen_list frozen<list<int>>," +
" \"UPPER_CASE_FROZEN_LIST\" frozen<list<int>>," +
" \"set name with spaces\" set<int>," +
" \"column_name_with\"\"escaped quote\" int," +
" PRIMARY KEY (k))");
createAndDropIndexWithQuotedColumnIdentifier("\"v\"");
createAndDropIndexWithQuotedColumnIdentifier("keys(\"lower_case_map\")");
createAndDropIndexWithQuotedColumnIdentifier("keys(\"MixedCaseMap\")");
createAndDropIndexWithQuotedColumnIdentifier("full(\"lower_case_frozen_list\")");
createAndDropIndexWithQuotedColumnIdentifier("full(\"UPPER_CASE_FROZEN_LIST\")");
createAndDropIndexWithQuotedColumnIdentifier("values(\"set name with spaces\")");
createAndDropIndexWithQuotedColumnIdentifier("\"column_name_with\"\"escaped quote\"");
}
private void createAndDropIndexWithQuotedColumnIdentifier(String target) throws Throwable
{
String indexName = "test_mixed_case_idx";
createIndex(String.format("CREATE INDEX %s ON %%s(%s)", indexName, target));
SecondaryIndexManager indexManager = getCurrentColumnFamilyStore().indexManager;
IndexMetadata indexDef = indexManager.getIndexByName(indexName).getIndexMetadata();
dropIndex(String.format("DROP INDEX %s.%s", KEYSPACE, indexName));
// verify we can re-create the index using the target string
createIndex(String.format("CREATE INDEX %s ON %%s(%s)",
indexName, indexDef.options.get(IndexTarget.TARGET_OPTION_NAME)));
assertEquals(indexDef, indexManager.getIndexByName(indexName).getIndexMetadata());
dropIndex(String.format("DROP INDEX %s.%s", KEYSPACE, indexName));
}
/**
* Test for CASSANDRA-5732, Can not query secondary index
* migrated from cql_tests.py:TestCQL.bug_5732_test(),
* which was executing with a row cache size of 100 MB
* and restarting the node, here we just cleanup the cache.
*/
@Test
public void testCanQuerySecondaryIndex() throws Throwable
{
String tableName = createTable("CREATE TABLE %s (k int PRIMARY KEY, v int,)");
execute("ALTER TABLE %s WITH CACHING = { 'keys': 'ALL', 'rows_per_partition': 'ALL' }");
execute("INSERT INTO %s (k,v) VALUES (0,0)");
execute("INSERT INTO %s (k,v) VALUES (1,1)");
createIndex("CREATE INDEX testindex on %s (v)");
assertTrue(waitForIndex(keyspace(), tableName, "testindex"));
assertRows(execute("SELECT k FROM %s WHERE v = 0"), row(0));
cleanupCache();
assertRows(execute("SELECT k FROM %s WHERE v = 0"), row(0));
}
// CASSANDRA-8280/8081
// reject updates with indexed values where value > 64k
// make sure we check conditional and unconditional statements,
// both singly and in batches (CASSANDRA-10536)
@Test
public void testIndexOnCompositeValueOver64k() throws Throwable
{
createTable("CREATE TABLE %s(a int, b int, c blob, PRIMARY KEY (a))");
createIndex("CREATE INDEX ON %s(c)");
failInsert("INSERT INTO %s (a, b, c) VALUES (0, 0, ?)", ByteBuffer.allocate(TOO_BIG));
failInsert("INSERT INTO %s (a, b, c) VALUES (0, 0, ?) IF NOT EXISTS", ByteBuffer.allocate(TOO_BIG));
failInsert("BEGIN BATCH\n" +
"INSERT INTO %s (a, b, c) VALUES (0, 0, ?);\n" +
"APPLY BATCH",
ByteBuffer.allocate(TOO_BIG));
failInsert("BEGIN BATCH\n" +
"INSERT INTO %s (a, b, c) VALUES (0, 0, ?) IF NOT EXISTS;\n" +
"APPLY BATCH",
ByteBuffer.allocate(TOO_BIG));
}
@Test
public void testCompactTableWithValueOver64k() throws Throwable
{
createTable("CREATE TABLE %s(a int, b blob, PRIMARY KEY (a)) WITH COMPACT STORAGE");
createIndex("CREATE INDEX ON %s(b)");
failInsert("INSERT INTO %s (a, b) VALUES (0, ?)", ByteBuffer.allocate(TOO_BIG));
failInsert("INSERT INTO %s (a, b) VALUES (0, ?) IF NOT EXISTS", ByteBuffer.allocate(TOO_BIG));
failInsert("BEGIN BATCH\n" +
"INSERT INTO %s (a, b) VALUES (0, ?);\n" +
"APPLY BATCH",
ByteBuffer.allocate(TOO_BIG));
failInsert("BEGIN BATCH\n" +
"INSERT INTO %s (a, b) VALUES (0, ?) IF NOT EXISTS;\n" +
"APPLY BATCH",
ByteBuffer.allocate(TOO_BIG));
}
@Test
public void testIndexOnPartitionKeyInsertValueOver64k() throws Throwable
{
createTable("CREATE TABLE %s(a int, b int, c blob, PRIMARY KEY ((a, b)))");
createIndex("CREATE INDEX ON %s(a)");
succeedInsert("INSERT INTO %s (a, b, c) VALUES (0, 0, ?) IF NOT EXISTS", ByteBuffer.allocate(TOO_BIG));
succeedInsert("INSERT INTO %s (a, b, c) VALUES (0, 0, ?)", ByteBuffer.allocate(TOO_BIG));
succeedInsert("BEGIN BATCH\n" +
"INSERT INTO %s (a, b, c) VALUES (0, 0, ?);\n" +
"APPLY BATCH", ByteBuffer.allocate(TOO_BIG));
// the indexed value passes validation, but the batch size will
// exceed the default failure threshold, so temporarily raise it
// (the non-conditional batch doesn't hit this because
// BatchStatement::executeInternal skips the size check but CAS
// path does not)
long batchSizeThreshold = DatabaseDescriptor.getBatchSizeFailThreshold();
try
{
DatabaseDescriptor.setBatchSizeFailThresholdInKB( (TOO_BIG / 1024) * 2);
succeedInsert("BEGIN BATCH\n" +
"INSERT INTO %s (a, b, c) VALUES (1, 1, ?) IF NOT EXISTS;\n" +
"APPLY BATCH", ByteBuffer.allocate(TOO_BIG));
}
finally
{
DatabaseDescriptor.setBatchSizeFailThresholdInKB((int) (batchSizeThreshold / 1024));
}
}
@Test
public void testIndexOnClusteringColumnInsertValueOver64k() throws Throwable
{
createTable("CREATE TABLE %s(a int, b int, c blob, PRIMARY KEY (a, b))");
createIndex("CREATE INDEX ON %s(b)");
succeedInsert("INSERT INTO %s (a, b, c) VALUES (0, 0, ?) IF NOT EXISTS", ByteBuffer.allocate(TOO_BIG));
succeedInsert("INSERT INTO %s (a, b, c) VALUES (0, 0, ?)", ByteBuffer.allocate(TOO_BIG));
succeedInsert("BEGIN BATCH\n" +
"INSERT INTO %s (a, b, c) VALUES (0, 0, ?);\n" +
"APPLY BATCH", ByteBuffer.allocate(TOO_BIG));
// the indexed value passes validation, but the batch size will
// exceed the default failure threshold, so temporarily raise it
// (the non-conditional batch doesn't hit this because
// BatchStatement::executeInternal skips the size check but CAS
// path does not)
long batchSizeThreshold = DatabaseDescriptor.getBatchSizeFailThreshold();
try
{
DatabaseDescriptor.setBatchSizeFailThresholdInKB( (TOO_BIG / 1024) * 2);
succeedInsert("BEGIN BATCH\n" +
"INSERT INTO %s (a, b, c) VALUES (1, 1, ?) IF NOT EXISTS;\n" +
"APPLY BATCH", ByteBuffer.allocate(TOO_BIG));
}
finally
{
DatabaseDescriptor.setBatchSizeFailThresholdInKB((int)(batchSizeThreshold / 1024));
}
}
@Test
public void testIndexOnFullCollectionEntryInsertCollectionValueOver64k() throws Throwable
{
createTable("CREATE TABLE %s(a int, b frozen<map<int, blob>>, PRIMARY KEY (a))");
createIndex("CREATE INDEX ON %s(full(b))");
Map<Integer, ByteBuffer> map = new HashMap<>();
map.put(0, ByteBuffer.allocate(1024 * 65));
failInsert("INSERT INTO %s (a, b) VALUES (0, ?)", map);
failInsert("INSERT INTO %s (a, b) VALUES (0, ?) IF NOT EXISTS", map);
failInsert("BEGIN BATCH\n" +
"INSERT INTO %s (a, b) VALUES (0, ?);\n" +
"APPLY BATCH", map);
failInsert("BEGIN BATCH\n" +
"INSERT INTO %s (a, b) VALUES (0, ?) IF NOT EXISTS;\n" +
"APPLY BATCH", map);
}
public void failInsert(String insertCQL, Object...args) throws Throwable
{
try
{
execute(insertCQL, args);
fail("Expected statement to fail validation");
}
catch (Exception e)
{
// as expected
}
}
public void succeedInsert(String insertCQL, Object...args) throws Throwable
{
execute(insertCQL, args);
flush();
}
/**
* Migrated from cql_tests.py:TestCQL.clustering_indexing_test()
*/
@Test
public void testIndexesOnClustering() throws Throwable
{
createTable("CREATE TABLE %s ( id1 int, id2 int, author text, time bigint, v1 text, v2 text, PRIMARY KEY ((id1, id2), author, time))");
createIndex("CREATE INDEX ON %s (time)");
execute("CREATE INDEX ON %s (id2)");
execute("INSERT INTO %s (id1, id2, author, time, v1, v2) VALUES(0, 0, 'bob', 0, 'A', 'A')");
execute("INSERT INTO %s (id1, id2, author, time, v1, v2) VALUES(0, 0, 'bob', 1, 'B', 'B')");
execute("INSERT INTO %s (id1, id2, author, time, v1, v2) VALUES(0, 1, 'bob', 2, 'C', 'C')");
execute("INSERT INTO %s (id1, id2, author, time, v1, v2) VALUES(0, 0, 'tom', 0, 'D', 'D')");
execute("INSERT INTO %s (id1, id2, author, time, v1, v2) VALUES(0, 1, 'tom', 1, 'E', 'E')");
assertRows(execute("SELECT v1 FROM %s WHERE time = 1"),
row("B"), row("E"));
assertRows(execute("SELECT v1 FROM %s WHERE id2 = 1"),
row("C"), row("E"));
assertRows(execute("SELECT v1 FROM %s WHERE id1 = 0 AND id2 = 0 AND author = 'bob' AND time = 0"),
row("A"));
// Test for CASSANDRA-8206
execute("UPDATE %s SET v2 = null WHERE id1 = 0 AND id2 = 0 AND author = 'bob' AND time = 1");
assertRows(execute("SELECT v1 FROM %s WHERE id2 = 0"),
row("A"), row("B"), row("D"));
assertRows(execute("SELECT v1 FROM %s WHERE time = 1"),
row("B"), row("E"));
}
/**
* Migrated from cql_tests.py:TestCQL.invalid_clustering_indexing_test()
*/
@Test
public void testIndexesOnClusteringInvalid() throws Throwable
{
createTable("CREATE TABLE %s (a int, b int, c int, d int, PRIMARY KEY ((a, b))) WITH COMPACT STORAGE");
assertInvalid("CREATE INDEX ON %s (a)");
assertInvalid("CREATE INDEX ON %s (b)");
createTable("CREATE TABLE %s (a int, b int, c int, PRIMARY KEY (a, b)) WITH COMPACT STORAGE");
assertInvalid("CREATE INDEX ON %s (a)");
assertInvalid("CREATE INDEX ON %s (b)");
assertInvalid("CREATE INDEX ON %s (c)");
createTable("CREATE TABLE %s (a int, b int, c int static , PRIMARY KEY (a, b))");
assertInvalid("CREATE INDEX ON %s (c)");
}
@Test
public void testMultipleIndexesOnOneColumn() throws Throwable
{
String indexClassName = StubIndex.class.getName();
createTable("CREATE TABLE %s (a int, b int, c int, PRIMARY KEY ((a), b))");
// uses different options otherwise the two indexes are considered duplicates
createIndex(String.format("CREATE CUSTOM INDEX c_idx_1 ON %%s(c) USING '%s' WITH OPTIONS = {'foo':'a'}", indexClassName));
createIndex(String.format("CREATE CUSTOM INDEX c_idx_2 ON %%s(c) USING '%s' WITH OPTIONS = {'foo':'b'}", indexClassName));
ColumnFamilyStore cfs = getCurrentColumnFamilyStore();
CFMetaData cfm = cfs.metadata;
StubIndex index1 = (StubIndex)cfs.indexManager.getIndex(cfm.getIndexes()
.get("c_idx_1")
.orElseThrow(throwAssert("index not found")));
StubIndex index2 = (StubIndex)cfs.indexManager.getIndex(cfm.getIndexes()
.get("c_idx_2")
.orElseThrow(throwAssert("index not found")));
Object[] row1a = row(0, 0, 0);
Object[] row1b = row(0, 0, 1);
Object[] row2 = row(2, 2, 2);
execute("INSERT INTO %s (a, b, c) VALUES (?, ?, ?)", row1a);
execute("INSERT INTO %s (a, b, c) VALUES (?, ?, ?)", row1b);
execute("INSERT INTO %s (a, b, c) VALUES (?, ?, ?)", row2);
assertEquals(2, index1.rowsInserted.size());
assertColumnValue(0, "c", index1.rowsInserted.get(0), cfm);
assertColumnValue(2, "c", index1.rowsInserted.get(1), cfm);
assertEquals(2, index2.rowsInserted.size());
assertColumnValue(0, "c", index2.rowsInserted.get(0), cfm);
assertColumnValue(2, "c", index2.rowsInserted.get(1), cfm);
assertEquals(1, index1.rowsUpdated.size());
assertColumnValue(0, "c", index1.rowsUpdated.get(0).left, cfm);
assertColumnValue(1, "c", index1.rowsUpdated.get(0).right, cfm);
assertEquals(1, index2.rowsUpdated.size());
assertColumnValue(0, "c", index2.rowsUpdated.get(0).left, cfm);
assertColumnValue(1, "c", index2.rowsUpdated.get(0).right, cfm);
}
@Test
public void testDeletions() throws Throwable
{
// Test for bugs like CASSANDRA-10694. These may not be readily visible with the built-in secondary index
// implementation because of the stale entry handling.
String indexClassName = StubIndex.class.getName();
createTable("CREATE TABLE %s (a int, b int, c int, PRIMARY KEY ((a), b))");
createIndex(String.format("CREATE CUSTOM INDEX c_idx ON %%s(c) USING '%s'", indexClassName));
ColumnFamilyStore cfs = getCurrentColumnFamilyStore();
CFMetaData cfm = cfs.metadata;
StubIndex index1 = (StubIndex) cfs.indexManager.getIndex(cfm.getIndexes()
.get("c_idx")
.orElseThrow(throwAssert("index not found")));
execute("INSERT INTO %s (a, b, c) VALUES (?, ?, ?) USING TIMESTAMP 1", 0, 0, 0);
assertEquals(1, index1.rowsInserted.size());
execute("DELETE FROM %s USING TIMESTAMP 2 WHERE a = ? AND b = ?", 0, 0);
assertEquals(1, index1.rowsUpdated.size());
Pair<Row, Row> update = index1.rowsUpdated.get(0);
Row existingRow = update.left;
Row newRow = update.right;
// check the existing row from the update call
assertTrue(existingRow.deletion().isLive());
assertEquals(DeletionTime.LIVE, existingRow.deletion().time());
assertEquals(1L, existingRow.primaryKeyLivenessInfo().timestamp());
// check the new row from the update call
assertFalse(newRow.deletion().isLive());
assertEquals(2L, newRow.deletion().time().markedForDeleteAt());
assertFalse(newRow.cells().iterator().hasNext());
// delete the same row again
execute("DELETE FROM %s USING TIMESTAMP 3 WHERE a = ? AND b = ?", 0, 0);
assertEquals(2, index1.rowsUpdated.size());
update = index1.rowsUpdated.get(1);
existingRow = update.left;
newRow = update.right;
// check the new row from the update call
assertFalse(existingRow.deletion().isLive());
assertEquals(2L, existingRow.deletion().time().markedForDeleteAt());
assertFalse(existingRow.cells().iterator().hasNext());
// check the new row from the update call
assertFalse(newRow.deletion().isLive());
assertEquals(3L, newRow.deletion().time().markedForDeleteAt());
assertFalse(newRow.cells().iterator().hasNext());
}
@Test
public void testUpdatesToMemtableData() throws Throwable
{
// verify the contract specified by Index.Indexer::updateRow(oldRowData, newRowData),
// when a row in the memtable is updated, the indexer should be informed of:
// * new columns
// * removed columns
// * columns whose value, timestamp or ttl have been modified.
// Any columns which are unchanged by the update are not passed to the Indexer
// Note that for simplicity this test resets the index between each scenario
createTable("CREATE TABLE %s (k int, c int, v1 int, v2 int, PRIMARY KEY (k,c))");
createIndex(String.format("CREATE CUSTOM INDEX test_index ON %%s() USING '%s'", StubIndex.class.getName()));
execute("INSERT INTO %s (k, c, v1, v2) VALUES (0, 0, 0, 0) USING TIMESTAMP 0");
ColumnDefinition v1 = getCurrentColumnFamilyStore().metadata.getColumnDefinition(new ColumnIdentifier("v1", true));
ColumnDefinition v2 = getCurrentColumnFamilyStore().metadata.getColumnDefinition(new ColumnIdentifier("v2", true));
StubIndex index = (StubIndex)getCurrentColumnFamilyStore().indexManager.getIndexByName("test_index");
assertEquals(1, index.rowsInserted.size());
// Overwrite a single value, leaving the other untouched
execute("UPDATE %s USING TIMESTAMP 1 SET v1=1 WHERE k=0 AND c=0");
assertEquals(1, index.rowsUpdated.size());
Row oldRow = index.rowsUpdated.get(0).left;
assertEquals(1, oldRow.size());
validateCell(oldRow.getCell(v1), v1, ByteBufferUtil.bytes(0), 0);
Row newRow = index.rowsUpdated.get(0).right;
assertEquals(1, newRow.size());
validateCell(newRow.getCell(v1), v1, ByteBufferUtil.bytes(1), 1);
index.reset();
// Overwrite both values
execute("UPDATE %s USING TIMESTAMP 2 SET v1=2, v2=2 WHERE k=0 AND c=0");
assertEquals(1, index.rowsUpdated.size());
oldRow = index.rowsUpdated.get(0).left;
assertEquals(2, oldRow.size());
validateCell(oldRow.getCell(v1), v1, ByteBufferUtil.bytes(1), 1);
validateCell(oldRow.getCell(v2), v2, ByteBufferUtil.bytes(0), 0);
newRow = index.rowsUpdated.get(0).right;
assertEquals(2, newRow.size());
validateCell(newRow.getCell(v1), v1, ByteBufferUtil.bytes(2), 2);
validateCell(newRow.getCell(v2), v2, ByteBufferUtil.bytes(2), 2);
index.reset();
// Delete one value
execute("DELETE v1 FROM %s USING TIMESTAMP 3 WHERE k=0 AND c=0");
assertEquals(1, index.rowsUpdated.size());
oldRow = index.rowsUpdated.get(0).left;
assertEquals(1, oldRow.size());
validateCell(oldRow.getCell(v1), v1, ByteBufferUtil.bytes(2), 2);
newRow = index.rowsUpdated.get(0).right;
assertEquals(1, newRow.size());
Cell newCell = newRow.getCell(v1);
assertTrue(newCell.isTombstone());
assertEquals(3, newCell.timestamp());
index.reset();
// Modify the liveness of the primary key, the delta rows should contain
// no cell data as only the pk was altered, but it should illustrate the
// change to the liveness info
execute("INSERT INTO %s(k, c) VALUES (0, 0) USING TIMESTAMP 4");
assertEquals(1, index.rowsUpdated.size());
oldRow = index.rowsUpdated.get(0).left;
assertEquals(0, oldRow.size());
assertEquals(0, oldRow.primaryKeyLivenessInfo().timestamp());
newRow = index.rowsUpdated.get(0).right;
assertEquals(0, newRow.size());
assertEquals(4, newRow.primaryKeyLivenessInfo().timestamp());
}
@Test
public void testIndexQueriesWithIndexNotReady() throws Throwable
{
createTable("CREATE TABLE %s (pk int, ck int, value int, PRIMARY KEY (pk, ck))");
for (int i = 0; i < 10; i++)
for (int j = 0; j < 10; j++)
execute("INSERT INTO %s (pk, ck, value) VALUES (?, ?, ?)", i, j, i + j);
createIndex("CREATE CUSTOM INDEX testIndex ON %s (value) USING '" + IndexBlockingOnInitialization.class.getName() + "'");
try
{
execute("SELECT value FROM %s WHERE value = 2");
fail();
}
catch (IndexNotAvailableException e)
{
assertTrue(true);
}
finally
{
execute("DROP index " + KEYSPACE + ".testIndex");
}
}
@Test
public void droppingIndexInvalidatesPreparedStatements() throws Throwable
{
createTable("CREATE TABLE %s (a int, b int, c int, PRIMARY KEY ((a), b))");
createIndex("CREATE INDEX c_idx ON %s(c)");
MD5Digest cqlId = prepareStatement("SELECT * FROM %s.%s WHERE c=?", false).statementId;
Integer thriftId = prepareStatement("SELECT * FROM %s.%s WHERE c=?", true).toThriftPreparedResult().getItemId();
assertNotNull(QueryProcessor.instance.getPrepared(cqlId));
assertNotNull(QueryProcessor.instance.getPreparedForThrift(thriftId));
dropIndex("DROP INDEX %s.c_idx");
assertNull(QueryProcessor.instance.getPrepared(cqlId));
assertNull(QueryProcessor.instance.getPreparedForThrift(thriftId));
}
// See CASSANDRA-11021
@Test
public void testIndexesOnNonStaticColumnsWhereSchemaIncludesStaticColumns() throws Throwable
{
createTable("CREATE TABLE %s (a int, b int, c int static, d int, PRIMARY KEY (a, b))");
createIndex("CREATE INDEX b_idx on %s(b)");
createIndex("CREATE INDEX d_idx on %s(d)");
execute("INSERT INTO %s (a, b, c ,d) VALUES (0, 0, 0, 0)");
execute("INSERT INTO %s (a, b, c, d) VALUES (1, 1, 1, 1)");
assertRows(execute("SELECT * FROM %s WHERE b = 0"), row(0, 0, 0, 0));
assertRows(execute("SELECT * FROM %s WHERE d = 1"), row(1, 1, 1, 1));
execute("UPDATE %s SET c = 2 WHERE a = 0");
execute("UPDATE %s SET c = 3, d = 4 WHERE a = 1 AND b = 1");
assertRows(execute("SELECT * FROM %s WHERE b = 0"), row(0, 0, 2, 0));
assertRows(execute("SELECT * FROM %s WHERE d = 4"), row(1, 1, 3, 4));
execute("DELETE FROM %s WHERE a = 0");
execute("DELETE FROM %s WHERE a = 1 AND b = 1");
assertEmpty(execute("SELECT * FROM %s WHERE b = 0"));
assertEmpty(execute("SELECT * FROM %s WHERE d = 3"));
}
private ResultMessage.Prepared prepareStatement(String cql, boolean forThrift)
{
return QueryProcessor.prepare(String.format(cql, KEYSPACE, currentTable()),
ClientState.forInternalCalls(),
forThrift);
}
private void validateCell(Cell cell, ColumnDefinition def, ByteBuffer val, long timestamp)
{
assertNotNull(cell);
assertEquals(0, def.type.compare(cell.value(), val));
assertEquals(timestamp, cell.timestamp());
}
private static void assertColumnValue(int expected, String name, Row row, CFMetaData cfm)
{
ColumnDefinition col = cfm.getColumnDefinition(new ColumnIdentifier(name, true));
AbstractType<?> type = col.type;
assertEquals(expected, type.compose(row.getCell(col).value()));
}
/**
* <code>CassandraIndex</code> that blocks during the initialization.
*/
public static class IndexBlockingOnInitialization extends CustomCassandraIndex
{
private final CountDownLatch latch = new CountDownLatch(1);
public IndexBlockingOnInitialization(ColumnFamilyStore baseCfs, IndexMetadata indexDef)
{
super(baseCfs, indexDef);
}
@Override
public Callable<?> getInitializationTask()
{
return () -> {
latch.await();
return null;
};
}
@Override
public Callable<?> getInvalidateTask()
{
latch.countDown();
return super.getInvalidateTask();
}
}
}