/*
* 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.hadoop.hbase.filter;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Durability;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.filter.MultiRowRangeFilter.RowRange;
import org.apache.hadoop.hbase.io.hfile.HFile;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.TestName;
/*
* This test is for the optimization added in HBASE-15243.
* FilterList with two MultiRowRangeFilter's is constructed using Operator.MUST_PASS_ONE.
*/
@Category(MediumTests.class)
public class TestFilterListOrOperatorWithBlkCnt {
private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
private static final Log LOG = LogFactory.getLog(TestFilterListOrOperatorWithBlkCnt.class);
private byte[] family = Bytes.toBytes("family");
private byte[] qf = Bytes.toBytes("qf");
private byte[] value = Bytes.toBytes("val");
private TableName tableName;
private int numRows = 10000;
@Rule
public TestName name = new TestName();
/**
* @throws Exception
*/
@BeforeClass
public static void setUpBeforeClass() throws Exception {
long blkSize = 4096;
/*
* dfs block size is adjusted so that the specified number of rows would result in
* multiple blocks (8 for this test).
* Later in the test, assertion is made on the number of blocks read.
*/
TEST_UTIL.getConfiguration().setLong("dfs.blocksize", blkSize);
TEST_UTIL.getConfiguration().setLong("dfs.bytes-per-checksum", blkSize);
TEST_UTIL.startMiniCluster();
}
/**
* @throws Exception
*/
@AfterClass
public static void tearDownAfterClass() throws Exception {
TEST_UTIL.shutdownMiniCluster();
}
private static long getBlkAccessCount() {
return HFile.DATABLOCK_READ_COUNT.sum();
}
@Test
public void testMultiRowRangeWithFilterListOrOperatorWithBlkCnt() throws IOException {
tableName = TableName.valueOf(name.getMethodName());
Table ht = TEST_UTIL.createTable(tableName, family, Integer.MAX_VALUE);
generateRows(numRows, ht, family, qf, value);
Scan scan = new Scan();
scan.setMaxVersions();
long blocksStart = getBlkAccessCount();
List<RowRange> ranges1 = new ArrayList<>();
ranges1.add(new RowRange(Bytes.toBytes(10), true, Bytes.toBytes(15), false));
ranges1.add(new RowRange(Bytes.toBytes(9980), true, Bytes.toBytes(9985), false));
MultiRowRangeFilter filter1 = new MultiRowRangeFilter(ranges1);
List<RowRange> ranges2 = new ArrayList<>();
ranges2.add(new RowRange(Bytes.toBytes(15), true, Bytes.toBytes(20), false));
ranges2.add(new RowRange(Bytes.toBytes(9985), true, Bytes.toBytes(9990), false));
MultiRowRangeFilter filter2 = new MultiRowRangeFilter(ranges2);
FilterList filterList = new FilterList(FilterList.Operator.MUST_PASS_ONE);
filterList.addFilter(filter1);
filterList.addFilter(filter2);
scan.setFilter(filterList);
int resultsSize = getResultsSize(ht, scan);
LOG.info("found " + resultsSize + " results");
List<Cell> results1 = getScanResult(Bytes.toBytes(10), Bytes.toBytes(20), ht);
List<Cell> results2 = getScanResult(Bytes.toBytes(9980), Bytes.toBytes(9990), ht);
assertEquals(results1.size() + results2.size(), resultsSize);
long blocksEnd = getBlkAccessCount();
long diff = blocksEnd - blocksStart;
LOG.info("Diff in number of blocks " + diff);
/*
* Verify that we don't read all the blocks (8 in total).
*/
assertEquals(4, diff);
ht.close();
}
private void generateRows(int numberOfRows, Table ht, byte[] family, byte[] qf, byte[] value)
throws IOException {
for (int i = 0; i < numberOfRows; i++) {
byte[] row = Bytes.toBytes(i);
Put p = new Put(row);
p.addColumn(family, qf, value);
p.setDurability(Durability.SKIP_WAL);
ht.put(p);
}
TEST_UTIL.flush();
}
private List<Cell> getScanResult(byte[] startRow, byte[] stopRow, Table ht) throws IOException {
Scan scan = new Scan();
scan.setMaxVersions();
if(!Bytes.toString(startRow).isEmpty()) {
scan.setStartRow(startRow);
}
if(!Bytes.toString(stopRow).isEmpty()) {
scan.setStopRow(stopRow);
}
ResultScanner scanner = ht.getScanner(scan);
List<Cell> kvList = new ArrayList<>();
Result r;
while ((r = scanner.next()) != null) {
for (Cell kv : r.listCells()) {
kvList.add(kv);
}
}
return kvList;
}
private int getResultsSize(Table ht, Scan scan) throws IOException {
ResultScanner scanner = ht.getScanner(scan);
List<Cell> results = new ArrayList<>();
Result r;
while ((r = scanner.next()) != null) {
for (Cell kv : r.listCells()) {
results.add(kv);
}
}
return results.size();
}
}