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* Licensed to the Apache Software Foundation (ASF) under one
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* 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.
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package org.apache.cassandra.io.sstable;
import java.io.File;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import com.google.common.io.Files;
import org.junit.After;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.Util;
import org.apache.cassandra.schema.TableMetadata;
import org.apache.cassandra.schema.TableMetadataRef;
import org.apache.cassandra.schema.Schema;
import org.apache.cassandra.db.*;
import org.apache.cassandra.db.partitions.*;
import org.apache.cassandra.db.marshal.AsciiType;
import org.apache.cassandra.dht.Range;
import org.apache.cassandra.dht.Token;
import org.apache.cassandra.io.FSWriteError;
import org.apache.cassandra.io.util.FileUtils;
import org.apache.cassandra.schema.KeyspaceParams;
import org.apache.cassandra.service.StorageService;
import org.apache.cassandra.streaming.StreamEvent;
import org.apache.cassandra.streaming.StreamEventHandler;
import org.apache.cassandra.streaming.StreamState;
import org.apache.cassandra.utils.ByteBufferUtil;
import org.apache.cassandra.utils.FBUtilities;
import org.apache.cassandra.utils.OutputHandler;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class SSTableLoaderTest
{
public static final String KEYSPACE1 = "SSTableLoaderTest";
public static final String CF_STANDARD1 = "Standard1";
public static final String CF_STANDARD2 = "Standard2";
private File tmpdir;
@BeforeClass
public static void defineSchema() throws Exception
{
SchemaLoader.prepareServer();
SchemaLoader.createKeyspace(KEYSPACE1,
KeyspaceParams.simple(1),
SchemaLoader.standardCFMD(KEYSPACE1, CF_STANDARD1),
SchemaLoader.standardCFMD(KEYSPACE1, CF_STANDARD2));
StorageService.instance.initServer();
}
@Before
public void setup() throws Exception
{
tmpdir = Files.createTempDir();
}
@After
public void cleanup()
{
try {
FileUtils.deleteRecursive(tmpdir);
} catch (FSWriteError e) {
/**
* Windows does not allow a mapped file to be deleted, so we probably forgot to clean the buffers somewhere.
* We force a GC here to force buffer deallocation, and then try deleting the directory again.
* For more information, see: http://bugs.java.com/bugdatabase/view_bug.do?bug_id=4715154
* If this is not the problem, the exception will be rethrown anyway.
*/
System.gc();
FileUtils.deleteRecursive(tmpdir);
}
}
private static final class TestClient extends SSTableLoader.Client
{
private String keyspace;
public void init(String keyspace)
{
this.keyspace = keyspace;
for (Range<Token> range : StorageService.instance.getLocalRanges(KEYSPACE1))
addRangeForEndpoint(range, FBUtilities.getBroadcastAddress());
}
public TableMetadataRef getTableMetadata(String tableName)
{
return Schema.instance.getTableMetadataRef(keyspace, tableName);
}
}
@Test
public void testLoadingSSTable() throws Exception
{
File dataDir = new File(tmpdir.getAbsolutePath() + File.separator + KEYSPACE1 + File.separator + CF_STANDARD1);
assert dataDir.mkdirs();
TableMetadata metadata = Schema.instance.getTableMetadata(KEYSPACE1, CF_STANDARD1);
String schema = "CREATE TABLE %s.%s (key ascii, name ascii, val ascii, val1 ascii, PRIMARY KEY (key, name))";
String query = "INSERT INTO %s.%s (key, name, val) VALUES (?, ?, ?)";
try (CQLSSTableWriter writer = CQLSSTableWriter.builder()
.inDirectory(dataDir)
.forTable(String.format(schema, KEYSPACE1, CF_STANDARD1))
.using(String.format(query, KEYSPACE1, CF_STANDARD1))
.build())
{
writer.addRow("key1", "col1", "100");
}
ColumnFamilyStore cfs = Keyspace.open(KEYSPACE1).getColumnFamilyStore(CF_STANDARD1);
cfs.forceBlockingFlush(); // wait for sstables to be on disk else we won't be able to stream them
final CountDownLatch latch = new CountDownLatch(1);
SSTableLoader loader = new SSTableLoader(dataDir, new TestClient(), new OutputHandler.SystemOutput(false, false));
loader.stream(Collections.emptySet(), completionStreamListener(latch)).get();
List<FilteredPartition> partitions = Util.getAll(Util.cmd(cfs).build());
assertEquals(1, partitions.size());
assertEquals("key1", AsciiType.instance.getString(partitions.get(0).partitionKey().getKey()));
assertEquals(ByteBufferUtil.bytes("100"), partitions.get(0).getRow(Clustering.make(ByteBufferUtil.bytes("col1")))
.getCell(metadata.getColumn(ByteBufferUtil.bytes("val")))
.value());
// The stream future is signalled when the work is complete but before releasing references. Wait for release
// before cleanup (CASSANDRA-10118).
latch.await();
}
@Test
public void testLoadingIncompleteSSTable() throws Exception
{
File dataDir = new File(tmpdir.getAbsolutePath() + File.separator + KEYSPACE1 + File.separator + CF_STANDARD2);
assert dataDir.mkdirs();
//make sure we have no tables...
assertTrue(dataDir.listFiles().length == 0);
String schema = "CREATE TABLE %s.%s (key ascii, name ascii, val ascii, val1 ascii, PRIMARY KEY (key, name))";
String query = "INSERT INTO %s.%s (key, name, val) VALUES (?, ?, ?)";
CQLSSTableWriter writer = CQLSSTableWriter.builder()
.inDirectory(dataDir)
.forTable(String.format(schema, KEYSPACE1, CF_STANDARD2))
.using(String.format(query, KEYSPACE1, CF_STANDARD2))
.withBufferSizeInMB(1)
.build();
int NB_PARTITIONS = 5000; // Enough to write >1MB and get at least one completed sstable before we've closed the writer
for (int i = 0; i < NB_PARTITIONS; i++)
{
for (int j = 0; j < 100; j++)
writer.addRow(String.format("key%d", i), String.format("col%d", j), "100");
}
ColumnFamilyStore cfs = Keyspace.open(KEYSPACE1).getColumnFamilyStore(CF_STANDARD2);
cfs.forceBlockingFlush(); // wait for sstables to be on disk else we won't be able to stream them
//make sure we have some tables...
assertTrue(dataDir.listFiles().length > 0);
final CountDownLatch latch = new CountDownLatch(2);
//writer is still open so loader should not load anything
SSTableLoader loader = new SSTableLoader(dataDir, new TestClient(), new OutputHandler.SystemOutput(false, false));
loader.stream(Collections.emptySet(), completionStreamListener(latch)).get();
List<FilteredPartition> partitions = Util.getAll(Util.cmd(cfs).build());
assertTrue(partitions.size() > 0 && partitions.size() < NB_PARTITIONS);
// now we complete the write and the second loader should load the last sstable as well
writer.close();
loader = new SSTableLoader(dataDir, new TestClient(), new OutputHandler.SystemOutput(false, false));
loader.stream(Collections.emptySet(), completionStreamListener(latch)).get();
partitions = Util.getAll(Util.cmd(Keyspace.open(KEYSPACE1).getColumnFamilyStore(CF_STANDARD2)).build());
assertEquals(NB_PARTITIONS, partitions.size());
// The stream future is signalled when the work is complete but before releasing references. Wait for release
// before cleanup (CASSANDRA-10118).
latch.await();
}
StreamEventHandler completionStreamListener(final CountDownLatch latch)
{
return new StreamEventHandler() {
public void onFailure(Throwable arg0)
{
latch.countDown();
}
public void onSuccess(StreamState arg0)
{
latch.countDown();
}
public void handleStreamEvent(StreamEvent event) {}
};
}
}