HBASE-7253 CompactionTool

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1416657 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Michael Stack 2012-12-03 20:35:58 +00:00
parent ee254fa233
commit 489726957e
6 changed files with 591 additions and 181 deletions

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@ -0,0 +1,58 @@
/**
* 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.mapreduce;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapred.JobClient;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapreduce.JobSubmissionFiles;
/**
* Utility methods to interact with a job.
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving
public abstract class JobUtil {
private static final Log LOG = LogFactory.getLog(JobUtil.class);
protected JobUtil() {
super();
}
/**
* Initializes the staging directory and returns the path.
*
* @parms conf system configuration
* @return staging directory path
* @throws IOException
* @throws InterruptedException
*/
public static Path getStagingDir(Configuration conf)
throws IOException, InterruptedException {
JobClient jobClient = new JobClient(new JobConf(conf));
return JobSubmissionFiles.getStagingDir(jobClient, conf);
}
}

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/**
* 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.mapreduce;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.mapreduce.Cluster;
import org.apache.hadoop.mapreduce.JobSubmissionFiles;
/**
* Utility methods to interact with a job.
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving
public abstract class JobUtil {
private static final Log LOG = LogFactory.getLog(JobUtil.class);
protected JobUtil() {
super();
}
/**
* Initializes the staging directory and returns the path.
*
* @parms conf system configuration
* @return staging directory path
* @throws IOException
* @throws InterruptedException
*/
public static Path getStagingDir(Configuration conf)
throws IOException, InterruptedException {
return JobSubmissionFiles.getStagingDir(new Cluster(conf), conf);
}
}

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/**
* 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.regionserver;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.util.LineReader;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.lib.input.FileSplit;
import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
import org.apache.hadoop.mapreduce.lib.output.NullOutputFormat;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HDFSBlocksDistribution;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.regionserver.HRegion;
import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest;
import org.apache.hadoop.hbase.mapreduce.JobUtil;
import org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
import org.apache.hadoop.hbase.util.FSTableDescriptors;
import org.apache.hadoop.hbase.util.FSUtils;
/*
* The CompactionTool allows to execute a compaction specifying a:
* <ul>
* <li>table folder (all regions and families will be compacted)
* <li>region folder (all families in the region will be compacted)
* <li>family folder (the store files will be compacted)
* </ul>
*/
@InterfaceAudience.Public
public class CompactionTool extends Configured implements Tool {
private static final Log LOG = LogFactory.getLog(CompactionTool.class);
private final static String CONF_TMP_DIR = "hbase.tmp.dir";
private final static String CONF_COMPACT_ONCE = "hbase.compactiontool.compact.once";
private final static String CONF_DELETE_COMPACTED = "hbase.compactiontool.delete";
private final static String CONF_COMPLETE_COMPACTION = "hbase.hstore.compaction.complete";
/**
* Class responsible to execute the Compaction on the specified path.
* The path can be a table, region or family directory.
*/
private static class CompactionWorker {
private final boolean keepCompactedFiles;
private final boolean deleteCompacted;
private final Configuration conf;
private final FileSystem fs;
private final Path tmpDir;
public CompactionWorker(final FileSystem fs, final Configuration conf) {
this.conf = conf;
this.keepCompactedFiles = !conf.getBoolean(CONF_COMPLETE_COMPACTION, true);
this.deleteCompacted = conf.getBoolean(CONF_DELETE_COMPACTED, false);
this.tmpDir = new Path(conf.get(CONF_TMP_DIR));
this.fs = fs;
}
/**
* Execute the compaction on the specified path.
*
* @param path Directory path on which run a
* @param compactOnce Execute just a single step of compaction.
*/
public void compact(final Path path, final boolean compactOnce) throws IOException {
if (isFamilyDir(fs, path)) {
Path regionDir = path.getParent();
Path tableDir = regionDir.getParent();
HTableDescriptor htd = FSTableDescriptors.getTableDescriptor(fs, tableDir);
HRegion region = loadRegion(fs, conf, htd, regionDir);
compactStoreFiles(region, path, compactOnce);
} else if (isRegionDir(fs, path)) {
Path tableDir = path.getParent();
HTableDescriptor htd = FSTableDescriptors.getTableDescriptor(fs, tableDir);
compactRegion(htd, path, compactOnce);
} else if (isTableDir(fs, path)) {
compactTable(path, compactOnce);
} else {
throw new IOException(
"Specified path is not a table, region or family directory. path=" + path);
}
}
private void compactTable(final Path tableDir, final boolean compactOnce)
throws IOException {
HTableDescriptor htd = FSTableDescriptors.getTableDescriptor(fs, tableDir);
LOG.info("Compact table=" + htd.getNameAsString());
for (Path regionDir: FSUtils.getRegionDirs(fs, tableDir)) {
compactRegion(htd, regionDir, compactOnce);
}
}
private void compactRegion(final HTableDescriptor htd, final Path regionDir,
final boolean compactOnce) throws IOException {
HRegion region = loadRegion(fs, conf, htd, regionDir);
LOG.info("Compact table=" + htd.getNameAsString() +
" region=" + region.getRegionNameAsString());
for (Path familyDir: FSUtils.getFamilyDirs(fs, regionDir)) {
compactStoreFiles(region, familyDir, compactOnce);
}
}
/**
* Execute the actual compaction job.
* If the compact once flag is not specified, execute the compaction until
* no more compactions are needed. Uses the Configuration settings provided.
*/
private void compactStoreFiles(final HRegion region, final Path familyDir,
final boolean compactOnce) throws IOException {
LOG.info("Compact table=" + region.getTableDesc().getNameAsString() +
" region=" + region.getRegionNameAsString() +
" family=" + familyDir.getName());
HStore store = getStore(region, familyDir);
do {
CompactionRequest cr = store.requestCompaction();
StoreFile storeFile = store.compact(cr);
if (storeFile != null) {
if (keepCompactedFiles && deleteCompacted) {
fs.delete(storeFile.getPath(), false);
}
}
} while (store.needsCompaction() && !compactOnce);
}
/**
* Create a "mock" HStore that uses the tmpDir specified by the user and
* the store dir to compact as source.
*/
private HStore getStore(final HRegion region, final Path storeDir) throws IOException {
byte[] familyName = Bytes.toBytes(storeDir.getName());
HColumnDescriptor hcd = region.getTableDesc().getFamily(familyName);
// Create a Store w/ check of hbase.rootdir blanked out and return our
// list of files instead of have Store search its home dir.
return new HStore(tmpDir, region, hcd, fs, conf) {
@Override
public FileStatus[] getStoreFiles() throws IOException {
return this.fs.listStatus(getHomedir());
}
@Override
Path createStoreHomeDir(FileSystem fs, Path homedir) throws IOException {
return storeDir;
}
};
}
private static HRegion loadRegion(final FileSystem fs, final Configuration conf,
final HTableDescriptor htd, final Path regionDir) throws IOException {
Path rootDir = regionDir.getParent().getParent();
HRegionInfo hri = HRegion.loadDotRegionInfoFileContent(fs, regionDir);
return HRegion.createHRegion(hri, rootDir, conf, htd, null, false, true);
}
}
private static boolean isRegionDir(final FileSystem fs, final Path path) throws IOException {
Path regionInfo = new Path(path, HRegion.REGIONINFO_FILE);
return fs.exists(regionInfo);
}
private static boolean isTableDir(final FileSystem fs, final Path path) throws IOException {
return FSTableDescriptors.getTableInfoPath(fs, path) != null;
}
private static boolean isFamilyDir(final FileSystem fs, final Path path) throws IOException {
return isRegionDir(fs, path.getParent());
}
private static class CompactionMapper
extends Mapper<LongWritable, Text, NullWritable, NullWritable> {
private CompactionWorker compactor = null;
private boolean compactOnce = false;
@Override
public void setup(Context context) {
Configuration conf = context.getConfiguration();
compactOnce = conf.getBoolean(CONF_COMPACT_ONCE, false);
try {
FileSystem fs = FileSystem.get(conf);
this.compactor = new CompactionWorker(fs, conf);
} catch (IOException e) {
throw new RuntimeException("Could not get the input FileSystem", e);
}
}
@Override
public void map(LongWritable key, Text value, Context context)
throws InterruptedException, IOException {
Path path = new Path(value.toString());
this.compactor.compact(path, compactOnce);
}
}
/**
* Input format that uses store files block location as input split locality.
*/
private static class CompactionInputFormat extends TextInputFormat {
@Override
protected boolean isSplitable(JobContext context, Path file) {
return true;
}
/**
* Returns a split for each store files directory using the block location
* of each file as locality reference.
*/
@Override
public List<InputSplit> getSplits(JobContext job) throws IOException {
List<InputSplit> splits = new ArrayList<InputSplit>();
List<FileStatus> files = listStatus(job);
Text key = new Text();
for (FileStatus file: files) {
Path path = file.getPath();
FileSystem fs = path.getFileSystem(job.getConfiguration());
LineReader reader = new LineReader(fs.open(path));
long pos = 0;
int n;
try {
while ((n = reader.readLine(key)) > 0) {
String[] hosts = getStoreDirHosts(fs, path);
splits.add(new FileSplit(path, pos, n, hosts));
pos += n;
}
} finally {
reader.close();
}
}
return splits;
}
/**
* return the top hosts of the store files, used by the Split
*/
private static String[] getStoreDirHosts(final FileSystem fs, final Path path)
throws IOException {
FileStatus[] files = FSUtils.listStatus(fs, path);
if (files == null) {
return new String[] {};
}
HDFSBlocksDistribution hdfsBlocksDistribution = new HDFSBlocksDistribution();
for (FileStatus hfileStatus: files) {
HDFSBlocksDistribution storeFileBlocksDistribution =
FSUtils.computeHDFSBlocksDistribution(fs, hfileStatus, 0, hfileStatus.getLen());
hdfsBlocksDistribution.add(storeFileBlocksDistribution);
}
List<String> hosts = hdfsBlocksDistribution.getTopHosts();
return hosts.toArray(new String[hosts.size()]);
}
/**
* Create the input file for the given directories to compact.
* The file is a TextFile with each line corrisponding to a
* store files directory to compact.
*/
public static void createInputFile(final FileSystem fs, final Path path,
final Set<Path> toCompactDirs) throws IOException {
// Extract the list of store dirs
List<Path> storeDirs = new LinkedList<Path>();
for (Path compactDir: toCompactDirs) {
if (isFamilyDir(fs, compactDir)) {
storeDirs.add(compactDir);
} else if (isRegionDir(fs, compactDir)) {
for (Path familyDir: FSUtils.getFamilyDirs(fs, compactDir)) {
storeDirs.add(familyDir);
}
} else if (isTableDir(fs, compactDir)) {
// Lookup regions
for (Path regionDir: FSUtils.getRegionDirs(fs, compactDir)) {
for (Path familyDir: FSUtils.getFamilyDirs(fs, regionDir)) {
storeDirs.add(familyDir);
}
}
} else {
throw new IOException(
"Specified path is not a table, region or family directory. path=" + compactDir);
}
}
// Write Input File
FSDataOutputStream stream = fs.create(path);
LOG.info("Create input file=" + path + " with " + storeDirs.size() + " dirs to compact.");
try {
final byte[] newLine = Bytes.toBytes("\n");
for (Path storeDir: storeDirs) {
stream.write(Bytes.toBytes(storeDir.toString()));
stream.write(newLine);
}
} finally {
stream.close();
}
}
}
/**
* Execute compaction, using a Map-Reduce job.
*/
private int doMapReduce(final FileSystem fs, final Set<Path> toCompactDirs,
final boolean compactOnce) throws Exception {
Configuration conf = getConf();
conf.setBoolean(CONF_COMPACT_ONCE, compactOnce);
Job job = new Job(conf);
job.setJobName("CompactionTool");
job.setJarByClass(CompactionTool.class);
job.setMapperClass(CompactionMapper.class);
job.setInputFormatClass(CompactionInputFormat.class);
job.setOutputFormatClass(NullOutputFormat.class);
job.setMapSpeculativeExecution(false);
job.setNumReduceTasks(0);
Path stagingDir = JobUtil.getStagingDir(conf);
try {
// Create input file with the store dirs
Path inputPath = new Path(stagingDir, "compact-"+ EnvironmentEdgeManager.currentTimeMillis());
CompactionInputFormat.createInputFile(fs, inputPath, toCompactDirs);
CompactionInputFormat.addInputPath(job, inputPath);
// Initialize credential for secure cluster
TableMapReduceUtil.initCredentials(job);
// Start the MR Job and wait
return job.waitForCompletion(true) ? 0 : 1;
} finally {
fs.delete(stagingDir, true);
}
}
/**
* Execute compaction, from this client, one path at the time.
*/
private int doClient(final FileSystem fs, final Set<Path> toCompactDirs,
final boolean compactOnce) throws IOException {
CompactionWorker worker = new CompactionWorker(fs, getConf());
for (Path path: toCompactDirs) {
worker.compact(path, compactOnce);
}
return 0;
}
@Override
public int run(String[] args) throws Exception {
Set<Path> toCompactDirs = new HashSet<Path>();
boolean compactOnce = false;
boolean mapred = false;
Configuration conf = getConf();
FileSystem fs = FileSystem.get(conf);
try {
for (int i = 0; i < args.length; ++i) {
String opt = args[i];
if (opt.equals("-compactOnce")) {
compactOnce = true;
} else if (opt.equals("-mapred")) {
mapred = true;
} else if (!opt.startsWith("-")) {
Path path = new Path(opt);
FileStatus status = fs.getFileStatus(path);
if (!status.isDir()) {
printUsage("Specified path is not a directory. path=" + path);
return 1;
}
toCompactDirs.add(path);
} else {
printUsage();
}
}
} catch (Exception e) {
printUsage(e.getMessage());
return 1;
}
if (toCompactDirs.size() == 0) {
printUsage("No directories to compact specified.");
return 1;
}
// Execute compaction!
if (mapred) {
return doMapReduce(fs, toCompactDirs, compactOnce);
} else {
return doClient(fs, toCompactDirs, compactOnce);
}
}
private void printUsage() {
printUsage(null);
}
private void printUsage(final String message) {
if (message != null && message.length() > 0) {
System.err.println(message);
}
System.err.println("Usage: java " + this.getClass().getName() + " \\");
System.err.println(" [-compactOnce] [-mapred] [-D<property=value>]* files...");
System.err.println();
System.err.println("Options:");
System.err.println(" mapred Use MapReduce to run compaction.");
System.err.println(" compactOnce Execute just one compaction step. (default: while needed)");
System.err.println();
System.err.println("Note: -D properties will be applied to the conf used. ");
System.err.println("For example: ");
System.err.println(" To preserve input files, pass -D"+CONF_COMPLETE_COMPACTION+"=false");
System.err.println(" To stop delete of compacted file, pass -D"+CONF_DELETE_COMPACTED+"=false");
System.err.println(" To set tmp dir, pass -D"+CONF_TMP_DIR+"=ALTERNATE_DIR");
System.err.println();
System.err.println("Examples:");
System.err.println(" To compact the full 'TestTable' using MapReduce:");
System.err.println(" $ bin/hbase " + this.getClass().getName() + " -mapred hdfs:///hbase/TestTable");
System.err.println();
System.err.println(" To compact column family 'x' of the table 'TestTable' region 'abc':");
System.err.println(" $ bin/hbase " + this.getClass().getName() + " hdfs:///hbase/TestTable/abc/x");
}
public static void main(String[] args) throws Exception {
System.exit(ToolRunner.run(HBaseConfiguration.create(), new CompactionTool(), args));
}
}

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@ -251,21 +251,21 @@ public class HRegion implements HeapSize { // , Writable{
* The directory for the table this region is part of.
* This directory contains the directory for this region.
*/
final Path tableDir;
private final Path tableDir;
final HLog log;
final FileSystem fs;
final Configuration conf;
final Configuration baseConf;
final int rowLockWaitDuration;
private final HLog log;
private final FileSystem fs;
private final Configuration conf;
private final Configuration baseConf;
private final int rowLockWaitDuration;
static final int DEFAULT_ROWLOCK_WAIT_DURATION = 30000;
// negative number indicates infinite timeout
static final long DEFAULT_ROW_PROCESSOR_TIMEOUT = 60 * 1000L;
final ExecutorService rowProcessorExecutor = Executors.newCachedThreadPool();
final HRegionInfo regionInfo;
final Path regiondir;
private final HRegionInfo regionInfo;
private final Path regiondir;
KeyValue.KVComparator comparator;
private ConcurrentHashMap<RegionScanner, Long> scannerReadPoints;

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@ -1192,7 +1192,7 @@ public class HStore implements Store, StoreConfiguration {
this.forceMajor = false;
}
LOG.debug(getHRegion().regionInfo.getEncodedName() + " - " +
LOG.debug(getHRegionInfo().getEncodedName() + " - " +
getColumnFamilyName() + ": Initiating " +
(isMajor ? "major" : "minor") + " compaction");
@ -1731,7 +1731,7 @@ public class HStore implements Store, StoreConfiguration {
}
HRegionInfo getHRegionInfo() {
return this.region.regionInfo;
return this.region.getRegionInfo();
}
/**

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@ -1,171 +0,0 @@
/**
* 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.regionserver;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequest;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.mockito.Mockito;
/**
* Compact passed set of files.
* Create an instance and then call {@ink #compact(Store, Collection, boolean, long)}.
* Call this classes {@link #main(String[])} to see how to run compaction code
* 'standalone'.
*/
public class CompactionTool implements Tool {
// Instantiates a Store instance and a mocked up HRegion. The compaction code
// requires a StoreScanner and a StoreScanner has to have a Store; its too
// tangled to do without (Store needs an HRegion which is another tangle).
// TODO: Undo the tangles some day.
private Configuration conf;
CompactionTool() {
super();
}
@Override
public Configuration getConf() {
return this.conf;
}
@Override
public void setConf(Configuration c) {
this.conf = c;
}
private int usage(final int errCode) {
return usage(errCode, null);
}
private int usage(final int errCode, final String errMsg) {
if (errMsg != null) System.err.println("ERROR: " + errMsg);
System.err.println("Usage: CompactionTool [options] <inputdir>");
System.err.println(" To preserve input files, pass -Dhbase.hstore.compaction.complete=false");
System.err.println(" To set tmp dir, pass -Dhbase.tmp.dir=ALTERNATE_DIR");
System.err.println(" To stop delete of compacted file, pass -Dhbase.compactiontool.delete=false");
return errCode;
}
int checkdir(final FileSystem fs, final Path p) throws IOException {
if (!fs.exists(p)) {
return usage(-2, p.toString() + " does not exist.");
}
if (!fs.getFileStatus(p).isDir()) {
return usage(-3, p.toString() + " must be a directory");
}
return 0;
}
/**
* Mock up an HRegion instance. Need to return an HRegionInfo when asked.
* Also need an executor to run storefile open/closes. Need to repeat
* the thenReturn on getOpenAndCloseThreadPool because otherwise it returns
* cache of first which is closed during the opening. Also, need to return
* tmpdir, etc.
* @param hri
* @param tmpdir
* @return
*/
private HRegion createHRegion(final HRegionInfo hri, final Path tmpdir) {
HRegion mockedHRegion = Mockito.mock(HRegion.class);
Mockito.when(mockedHRegion.getRegionInfo()).thenReturn(hri);
Mockito.when(mockedHRegion.getStoreFileOpenAndCloseThreadPool(Mockito.anyString())).
thenReturn(HRegion.getOpenAndCloseThreadPool(1, "mockedRegion.opener")).
thenReturn(HRegion.getOpenAndCloseThreadPool(1, "mockedRegion.closer"));
Mockito.when(mockedHRegion.areWritesEnabled()).thenReturn(true);
Mockito.when(mockedHRegion.getTmpDir()).thenReturn(tmpdir);
return mockedHRegion;
}
/**
* Fake up a Store around the passed <code>storedir</code>.
* @param fs
* @param storedir
* @param tmpdir
* @return
* @throws IOException
*/
private HStore getStore(final FileSystem fs, final Path storedir, final Path tmpdir)
throws IOException {
// TODO: Let config on table and column family be configurable from
// command-line setting versions, etc. For now do defaults
HColumnDescriptor hcd = new HColumnDescriptor("f");
HRegionInfo hri = new HRegionInfo(Bytes.toBytes("t"));
// Get a shell of an HRegion w/ enough functionality to make Store happy.
HRegion region = createHRegion(hri, tmpdir);
// Create a Store w/ check of hbase.rootdir blanked out and return our
// list of files instead of have Store search its home dir.
return new HStore(tmpdir, region, hcd, fs, getConf()) {
@Override
public FileStatus[] getStoreFiles() throws IOException {
return this.fs.listStatus(getHomedir());
}
@Override
Path createStoreHomeDir(FileSystem fs, Path homedir) throws IOException {
return storedir;
}
};
}
@Override
public int run(final String[] args) throws Exception {
if (args.length == 0) return usage(-1);
FileSystem fs = FileSystem.get(getConf());
final Path inputdir = new Path(args[0]);
final Path tmpdir = new Path(getConf().get("hbase.tmp.dir"));
int errCode = checkdir(fs, inputdir);
if (errCode != 0) return errCode;
errCode = checkdir(fs, tmpdir);
if (errCode != 0) return errCode;
// Get a Store that wraps the inputdir of files to compact.
HStore store = getStore(fs, inputdir, tmpdir);
// Now we have a Store, run a compaction of passed files.
try {
CompactionRequest cr = store.requestCompaction();
StoreFile sf = store.compact(cr);
if (sf != null) {
sf.closeReader(true);
if (conf.getBoolean("hbase.compactiontool.delete", true)) {
if (!fs.delete(sf.getPath(), false)) {
throw new IOException("Failed delete of " + sf.getPath());
}
}
}
} finally {
store.close();
}
return 0;
}
public static void main(String[] args) throws Exception {
System.exit(ToolRunner.run(HBaseConfiguration.create(),
new CompactionTool(), args));
}
}