/*
* 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.io.hfile;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.MediumTests;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.regionserver.HRegion;
import org.apache.hadoop.hbase.regionserver.HStore;
import org.apache.hadoop.hbase.regionserver.InternalScanner;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
import org.apache.hadoop.hbase.util.Threads;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
/**
* Test the optimization that does not scan files where all timestamps are
* expired.
*/
@RunWith(Parameterized.class)
@Category(MediumTests.class)
public class TestScannerSelectionUsingTTL {
private static final Log LOG =
LogFactory.getLog(TestScannerSelectionUsingTTL.class);
private static final HBaseTestingUtility TEST_UTIL =
new HBaseTestingUtility().createLocalHTU();
private static TableName TABLE = TableName.valueOf("myTable");
private static String FAMILY = "myCF";
private static byte[] FAMILY_BYTES = Bytes.toBytes(FAMILY);
private static final int TTL_SECONDS = 10;
private static final int TTL_MS = TTL_SECONDS * 1000;
private static final int NUM_EXPIRED_FILES = 2;
private static final int NUM_ROWS = 8;
private static final int NUM_COLS_PER_ROW = 5;
public final int numFreshFiles, totalNumFiles;
/** Whether we are specifying the exact files to compact */
private final boolean explicitCompaction;
@Parameters
public static Collection<Object[]> parameters() {
List<Object[]> params = new ArrayList<Object[]>();
for (int numFreshFiles = 1; numFreshFiles <= 3; ++numFreshFiles) {
for (boolean explicitCompaction : new boolean[] { false, true }) {
params.add(new Object[] { numFreshFiles, explicitCompaction });
}
}
return params;
}
public TestScannerSelectionUsingTTL(int numFreshFiles,
boolean explicitCompaction) {
this.numFreshFiles = numFreshFiles;
this.totalNumFiles = numFreshFiles + NUM_EXPIRED_FILES;
this.explicitCompaction = explicitCompaction;
}
@Test
public void testScannerSelection() throws IOException {
Configuration conf = TEST_UTIL.getConfiguration();
conf.setBoolean("hbase.store.delete.expired.storefile", false);
HColumnDescriptor hcd =
new HColumnDescriptor(FAMILY_BYTES)
.setMaxVersions(Integer.MAX_VALUE)
.setTimeToLive(TTL_SECONDS);
HTableDescriptor htd = new HTableDescriptor(TABLE);
htd.addFamily(hcd);
HRegionInfo info = new HRegionInfo(TABLE);
HRegion region =
HRegion.createHRegion(info, TEST_UTIL.getDataTestDir(info.getEncodedName()),
conf, htd);
long ts = EnvironmentEdgeManager.currentTimeMillis();
long version = 0; //make sure each new set of Put's have a new ts
for (int iFile = 0; iFile < totalNumFiles; ++iFile) {
if (iFile == NUM_EXPIRED_FILES) {
Threads.sleepWithoutInterrupt(TTL_MS);
version += TTL_MS;
}
for (int iRow = 0; iRow < NUM_ROWS; ++iRow) {
Put put = new Put(Bytes.toBytes("row" + iRow));
for (int iCol = 0; iCol < NUM_COLS_PER_ROW; ++iCol) {
put.add(FAMILY_BYTES, Bytes.toBytes("col" + iCol),
ts + version, Bytes.toBytes("value" + iFile + "_" + iRow + "_" + iCol));
}
region.put(put);
}
region.flushcache();
version++;
}
Scan scan = new Scan();
scan.setMaxVersions(Integer.MAX_VALUE);
CacheConfig cacheConf = new CacheConfig(conf);
LruBlockCache cache = (LruBlockCache) cacheConf.getBlockCache();
cache.clearCache();
InternalScanner scanner = region.getScanner(scan);
List<Cell> results = new ArrayList<Cell>();
final int expectedKVsPerRow = numFreshFiles * NUM_COLS_PER_ROW;
int numReturnedRows = 0;
LOG.info("Scanning the entire table");
while (scanner.next(results) || results.size() > 0) {
assertEquals(expectedKVsPerRow, results.size());
++numReturnedRows;
results.clear();
}
assertEquals(NUM_ROWS, numReturnedRows);
Set<String> accessedFiles = cache.getCachedFileNamesForTest();
LOG.debug("Files accessed during scan: " + accessedFiles);
// Exercise both compaction codepaths.
if (explicitCompaction) {
HStore store = (HStore)region.getStore(FAMILY_BYTES);
store.compactRecentForTestingAssumingDefaultPolicy(totalNumFiles);
} else {
region.compactStores();
}
region.close();
}
}