/**
*
* 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.replication;
import java.io.IOException;
import java.util.Arrays;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.Configured;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.Abortable;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Get;
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.client.TableSnapshotScanner;
import org.apache.hadoop.hbase.filter.Filter;
import org.apache.hadoop.hbase.filter.FilterList;
import org.apache.hadoop.hbase.filter.PrefixFilter;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.hbase.mapreduce.TableInputFormat;
import org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil;
import org.apache.hadoop.hbase.mapreduce.TableMapper;
import org.apache.hadoop.hbase.mapreduce.TableSnapshotInputFormat;
import org.apache.hadoop.hbase.mapreduce.TableSplit;
import org.apache.hadoop.hbase.replication.ReplicationException;
import org.apache.hadoop.hbase.replication.ReplicationFactory;
import org.apache.hadoop.hbase.replication.ReplicationPeerConfig;
import org.apache.hadoop.hbase.replication.ReplicationPeerZKImpl;
import org.apache.hadoop.hbase.replication.ReplicationPeers;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.FSUtils;
import org.apache.hadoop.hbase.util.Pair;
import org.apache.hadoop.hbase.util.Threads;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.MRJobConfig;
import org.apache.hadoop.mapreduce.lib.output.NullOutputFormat;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import com.google.common.annotations.VisibleForTesting;
/**
* This map-only job compares the data from a local table with a remote one.
* Every cell is compared and must have exactly the same keys (even timestamp)
* as well as same value. It is possible to restrict the job by time range and
* families. The peer id that's provided must match the one given when the
* replication stream was setup.
* <p>
* Two counters are provided, Verifier.Counters.GOODROWS and BADROWS. The reason
* for a why a row is different is shown in the map's log.
*/
public class VerifyReplication extends Configured implements Tool {
private static final Log LOG =
LogFactory.getLog(VerifyReplication.class);
public final static String NAME = "verifyrep";
private final static String PEER_CONFIG_PREFIX = NAME + ".peer.";
long startTime = 0;
long endTime = Long.MAX_VALUE;
int batch = -1;
int versions = -1;
String tableName = null;
String families = null;
String delimiter = "";
String peerId = null;
String rowPrefixes = null;
int sleepMsBeforeReCompare = 0;
boolean verbose = false;
boolean includeDeletedCells = false;
//Source table snapshot name
String sourceSnapshotName = null;
//Temp location in source cluster to restore source snapshot
String sourceSnapshotTmpDir = null;
//Peer table snapshot name
String peerSnapshotName = null;
//Temp location in peer cluster to restore peer snapshot
String peerSnapshotTmpDir = null;
//Peer cluster Hadoop FS address
String peerFSAddress = null;
//Peer cluster HBase root dir location
String peerHBaseRootAddress = null;
private final static String JOB_NAME_CONF_KEY = "mapreduce.job.name";
/**
* Map-only comparator for 2 tables
*/
public static class Verifier
extends TableMapper<ImmutableBytesWritable, Put> {
public static enum Counters {
GOODROWS, BADROWS, ONLY_IN_SOURCE_TABLE_ROWS, ONLY_IN_PEER_TABLE_ROWS, CONTENT_DIFFERENT_ROWS}
private Connection sourceConnection;
private Table sourceTable;
private Connection replicatedConnection;
private Table replicatedTable;
private ResultScanner replicatedScanner;
private Result currentCompareRowInPeerTable;
private int sleepMsBeforeReCompare;
private String delimiter = "";
private boolean verbose = false;
private int batch = -1;
/**
* Map method that compares every scanned row with the equivalent from
* a distant cluster.
* @param row The current table row key.
* @param value The columns.
* @param context The current context.
* @throws IOException When something is broken with the data.
*/
@Override
public void map(ImmutableBytesWritable row, final Result value,
Context context)
throws IOException {
if (replicatedScanner == null) {
Configuration conf = context.getConfiguration();
sleepMsBeforeReCompare = conf.getInt(NAME +".sleepMsBeforeReCompare", 0);
delimiter = conf.get(NAME + ".delimiter", "");
verbose = conf.getBoolean(NAME +".verbose", false);
batch = conf.getInt(NAME + ".batch", -1);
final Scan scan = new Scan();
if (batch > 0) {
scan.setBatch(batch);
}
scan.setCacheBlocks(false);
scan.setCaching(conf.getInt(TableInputFormat.SCAN_CACHEDROWS, 1));
long startTime = conf.getLong(NAME + ".startTime", 0);
long endTime = conf.getLong(NAME + ".endTime", Long.MAX_VALUE);
String families = conf.get(NAME + ".families", null);
if(families != null) {
String[] fams = families.split(",");
for(String fam : fams) {
scan.addFamily(Bytes.toBytes(fam));
}
}
boolean includeDeletedCells = conf.getBoolean(NAME + ".includeDeletedCells", false);
scan.setRaw(includeDeletedCells);
String rowPrefixes = conf.get(NAME + ".rowPrefixes", null);
setRowPrefixFilter(scan, rowPrefixes);
scan.setTimeRange(startTime, endTime);
int versions = conf.getInt(NAME+".versions", -1);
LOG.info("Setting number of version inside map as: " + versions);
if (versions >= 0) {
scan.setMaxVersions(versions);
}
TableName tableName = TableName.valueOf(conf.get(NAME + ".tableName"));
sourceConnection = ConnectionFactory.createConnection(conf);
sourceTable = sourceConnection.getTable(tableName);
final InputSplit tableSplit = context.getInputSplit();
String zkClusterKey = conf.get(NAME + ".peerQuorumAddress");
Configuration peerConf = HBaseConfiguration.createClusterConf(conf,
zkClusterKey, PEER_CONFIG_PREFIX);
replicatedConnection = ConnectionFactory.createConnection(peerConf);
replicatedTable = replicatedConnection.getTable(tableName);
scan.setStartRow(value.getRow());
byte[] endRow = null;
if (tableSplit instanceof TableSnapshotInputFormat.TableSnapshotRegionSplit) {
endRow = ((TableSnapshotInputFormat.TableSnapshotRegionSplit) tableSplit).getRegionInfo()
.getEndKey();
} else {
endRow = ((TableSplit) tableSplit).getEndRow();
}
scan.setStopRow(endRow);
String peerSnapshotName = conf.get(NAME + ".peerSnapshotName", null);
if (peerSnapshotName != null) {
String peerSnapshotTmpDir = conf.get(NAME + ".peerSnapshotTmpDir", null);
String peerFSAddress = conf.get(NAME + ".peerFSAddress", null);
String peerHBaseRootAddress = conf.get(NAME + ".peerHBaseRootAddress", null);
FileSystem.setDefaultUri(peerConf, peerFSAddress);
FSUtils.setRootDir(peerConf, new Path(peerHBaseRootAddress));
LOG.info("Using peer snapshot:" + peerSnapshotName + " with temp dir:"
+ peerSnapshotTmpDir + " peer root uri:" + FSUtils.getRootDir(peerConf)
+ " peerFSAddress:" + peerFSAddress);
replicatedScanner = new TableSnapshotScanner(peerConf,
new Path(peerFSAddress, peerSnapshotTmpDir), peerSnapshotName, scan);
} else {
replicatedScanner = replicatedTable.getScanner(scan);
}
currentCompareRowInPeerTable = replicatedScanner.next();
}
while (true) {
if (currentCompareRowInPeerTable == null) {
// reach the region end of peer table, row only in source table
logFailRowAndIncreaseCounter(context, Counters.ONLY_IN_SOURCE_TABLE_ROWS, value);
break;
}
int rowCmpRet = Bytes.compareTo(value.getRow(), currentCompareRowInPeerTable.getRow());
if (rowCmpRet == 0) {
// rowkey is same, need to compare the content of the row
try {
Result.compareResults(value, currentCompareRowInPeerTable);
context.getCounter(Counters.GOODROWS).increment(1);
if (verbose) {
LOG.info("Good row key: " + delimiter
+ Bytes.toStringBinary(value.getRow()) + delimiter);
}
} catch (Exception e) {
logFailRowAndIncreaseCounter(context, Counters.CONTENT_DIFFERENT_ROWS, value);
}
currentCompareRowInPeerTable = replicatedScanner.next();
break;
} else if (rowCmpRet < 0) {
// row only exists in source table
logFailRowAndIncreaseCounter(context, Counters.ONLY_IN_SOURCE_TABLE_ROWS, value);
break;
} else {
// row only exists in peer table
logFailRowAndIncreaseCounter(context, Counters.ONLY_IN_PEER_TABLE_ROWS,
currentCompareRowInPeerTable);
currentCompareRowInPeerTable = replicatedScanner.next();
}
}
}
private void logFailRowAndIncreaseCounter(Context context, Counters counter, Result row) {
if (sleepMsBeforeReCompare > 0) {
Threads.sleep(sleepMsBeforeReCompare);
try {
Result sourceResult = sourceTable.get(new Get(row.getRow()));
Result replicatedResult = replicatedTable.get(new Get(row.getRow()));
Result.compareResults(sourceResult, replicatedResult);
if (!sourceResult.isEmpty()) {
context.getCounter(Counters.GOODROWS).increment(1);
if (verbose) {
LOG.info("Good row key (with recompare): " + delimiter + Bytes.toStringBinary(row.getRow())
+ delimiter);
}
}
return;
} catch (Exception e) {
LOG.error("recompare fail after sleep, rowkey=" + delimiter +
Bytes.toStringBinary(row.getRow()) + delimiter);
}
}
context.getCounter(counter).increment(1);
context.getCounter(Counters.BADROWS).increment(1);
LOG.error(counter.toString() + ", rowkey=" + delimiter + Bytes.toStringBinary(row.getRow()) +
delimiter);
}
@Override
protected void cleanup(Context context) {
if (replicatedScanner != null) {
try {
while (currentCompareRowInPeerTable != null) {
logFailRowAndIncreaseCounter(context, Counters.ONLY_IN_PEER_TABLE_ROWS,
currentCompareRowInPeerTable);
currentCompareRowInPeerTable = replicatedScanner.next();
}
} catch (Exception e) {
LOG.error("fail to scan peer table in cleanup", e);
} finally {
replicatedScanner.close();
replicatedScanner = null;
}
}
if (sourceTable != null) {
try {
sourceTable.close();
} catch (IOException e) {
LOG.error("fail to close source table in cleanup", e);
}
}
if(sourceConnection != null){
try {
sourceConnection.close();
} catch (Exception e) {
LOG.error("fail to close source connection in cleanup", e);
}
}
if(replicatedTable != null){
try{
replicatedTable.close();
} catch (Exception e) {
LOG.error("fail to close replicated table in cleanup", e);
}
}
if(replicatedConnection != null){
try {
replicatedConnection.close();
} catch (Exception e) {
LOG.error("fail to close replicated connection in cleanup", e);
}
}
}
}
private static Pair<ReplicationPeerConfig, Configuration> getPeerQuorumConfig(
final Configuration conf, String peerId) throws IOException {
ZooKeeperWatcher localZKW = null;
ReplicationPeerZKImpl peer = null;
try {
localZKW = new ZooKeeperWatcher(conf, "VerifyReplication",
new Abortable() {
@Override public void abort(String why, Throwable e) {}
@Override public boolean isAborted() {return false;}
});
ReplicationPeers rp = ReplicationFactory.getReplicationPeers(localZKW, conf, localZKW);
rp.init();
Pair<ReplicationPeerConfig, Configuration> pair = rp.getPeerConf(peerId);
if (pair == null) {
throw new IOException("Couldn't get peer conf!");
}
return pair;
} catch (ReplicationException e) {
throw new IOException(
"An error occurred while trying to connect to the remove peer cluster", e);
} finally {
if (peer != null) {
peer.close();
}
if (localZKW != null) {
localZKW.close();
}
}
}
/**
* Sets up the actual job.
*
* @param conf The current configuration.
* @param args The command line parameters.
* @return The newly created job.
* @throws java.io.IOException When setting up the job fails.
*/
public Job createSubmittableJob(Configuration conf, String[] args)
throws IOException {
if (!doCommandLine(args)) {
return null;
}
conf.set(NAME+".peerId", peerId);
conf.set(NAME+".tableName", tableName);
conf.setLong(NAME+".startTime", startTime);
conf.setLong(NAME+".endTime", endTime);
conf.setInt(NAME +".sleepMsBeforeReCompare", sleepMsBeforeReCompare);
conf.set(NAME + ".delimiter", delimiter);
conf.setInt(NAME + ".batch", batch);
conf.setBoolean(NAME +".verbose", verbose);
conf.setBoolean(NAME +".includeDeletedCells", includeDeletedCells);
if (families != null) {
conf.set(NAME+".families", families);
}
if (rowPrefixes != null){
conf.set(NAME+".rowPrefixes", rowPrefixes);
}
Pair<ReplicationPeerConfig, Configuration> peerConfigPair = getPeerQuorumConfig(conf, peerId);
ReplicationPeerConfig peerConfig = peerConfigPair.getFirst();
String peerQuorumAddress = peerConfig.getClusterKey();
LOG.info("Peer Quorum Address: " + peerQuorumAddress + ", Peer Configuration: " +
peerConfig.getConfiguration());
conf.set(NAME + ".peerQuorumAddress", peerQuorumAddress);
HBaseConfiguration.setWithPrefix(conf, PEER_CONFIG_PREFIX,
peerConfig.getConfiguration().entrySet());
conf.setInt(NAME + ".versions", versions);
LOG.info("Number of version: " + versions);
//Set Snapshot specific parameters
if (peerSnapshotName != null) {
conf.set(NAME + ".peerSnapshotName", peerSnapshotName);
conf.set(NAME + ".peerSnapshotTmpDir", peerSnapshotTmpDir);
conf.set(NAME + ".peerFSAddress", peerFSAddress);
conf.set(NAME + ".peerHBaseRootAddress", peerHBaseRootAddress);
// This is to create HDFS delegation token for peer cluster in case of secured
conf.setStrings(MRJobConfig.JOB_NAMENODES, peerFSAddress);
}
Job job = Job.getInstance(conf, conf.get(JOB_NAME_CONF_KEY, NAME + "_" + tableName));
job.setJarByClass(VerifyReplication.class);
Scan scan = new Scan();
scan.setTimeRange(startTime, endTime);
scan.setRaw(includeDeletedCells);
scan.setCacheBlocks(false);
if (batch > 0) {
scan.setBatch(batch);
}
if (versions >= 0) {
scan.setMaxVersions(versions);
LOG.info("Number of versions set to " + versions);
}
if(families != null) {
String[] fams = families.split(",");
for(String fam : fams) {
scan.addFamily(Bytes.toBytes(fam));
}
}
setRowPrefixFilter(scan, rowPrefixes);
if (sourceSnapshotName != null) {
Path snapshotTempPath = new Path(sourceSnapshotTmpDir);
LOG.info(
"Using source snapshot-" + sourceSnapshotName + " with temp dir:" + sourceSnapshotTmpDir);
TableMapReduceUtil.initTableSnapshotMapperJob(sourceSnapshotName, scan, Verifier.class, null,
null, job, true, snapshotTempPath);
} else {
TableMapReduceUtil.initTableMapperJob(tableName, scan, Verifier.class, null, null, job);
}
Configuration peerClusterConf = peerConfigPair.getSecond();
// Obtain the auth token from peer cluster
TableMapReduceUtil.initCredentialsForCluster(job, peerClusterConf);
job.setOutputFormatClass(NullOutputFormat.class);
job.setNumReduceTasks(0);
return job;
}
private static void setRowPrefixFilter(Scan scan, String rowPrefixes) {
if (rowPrefixes != null && !rowPrefixes.isEmpty()) {
String[] rowPrefixArray = rowPrefixes.split(",");
Arrays.sort(rowPrefixArray);
FilterList filterList = new FilterList(FilterList.Operator.MUST_PASS_ONE);
for (String prefix : rowPrefixArray) {
Filter filter = new PrefixFilter(Bytes.toBytes(prefix));
filterList.addFilter(filter);
}
scan.setFilter(filterList);
byte[] startPrefixRow = Bytes.toBytes(rowPrefixArray[0]);
byte[] lastPrefixRow = Bytes.toBytes(rowPrefixArray[rowPrefixArray.length -1]);
setStartAndStopRows(scan, startPrefixRow, lastPrefixRow);
}
}
private static void setStartAndStopRows(Scan scan, byte[] startPrefixRow, byte[] lastPrefixRow) {
scan.setStartRow(startPrefixRow);
byte[] stopRow = Bytes.add(Bytes.head(lastPrefixRow, lastPrefixRow.length - 1),
new byte[]{(byte) (lastPrefixRow[lastPrefixRow.length - 1] + 1)});
scan.setStopRow(stopRow);
}
@VisibleForTesting
public boolean doCommandLine(final String[] args) {
if (args.length < 2) {
printUsage(null);
return false;
}
try {
for (int i = 0; i < args.length; i++) {
String cmd = args[i];
if (cmd.equals("-h") || cmd.startsWith("--h")) {
printUsage(null);
return false;
}
final String startTimeArgKey = "--starttime=";
if (cmd.startsWith(startTimeArgKey)) {
startTime = Long.parseLong(cmd.substring(startTimeArgKey.length()));
continue;
}
final String endTimeArgKey = "--endtime=";
if (cmd.startsWith(endTimeArgKey)) {
endTime = Long.parseLong(cmd.substring(endTimeArgKey.length()));
continue;
}
final String includeDeletedCellsArgKey = "--raw";
if (cmd.equals(includeDeletedCellsArgKey)) {
includeDeletedCells = true;
continue;
}
final String versionsArgKey = "--versions=";
if (cmd.startsWith(versionsArgKey)) {
versions = Integer.parseInt(cmd.substring(versionsArgKey.length()));
continue;
}
final String batchArgKey = "--batch=";
if (cmd.startsWith(batchArgKey)) {
batch = Integer.parseInt(cmd.substring(batchArgKey.length()));
continue;
}
final String familiesArgKey = "--families=";
if (cmd.startsWith(familiesArgKey)) {
families = cmd.substring(familiesArgKey.length());
continue;
}
final String rowPrefixesKey = "--row-prefixes=";
if (cmd.startsWith(rowPrefixesKey)){
rowPrefixes = cmd.substring(rowPrefixesKey.length());
continue;
}
final String delimiterArgKey = "--delimiter=";
if (cmd.startsWith(delimiterArgKey)) {
delimiter = cmd.substring(delimiterArgKey.length());
continue;
}
final String sleepToReCompareKey = "--recomparesleep=";
if (cmd.startsWith(sleepToReCompareKey)) {
sleepMsBeforeReCompare = Integer.parseInt(cmd.substring(sleepToReCompareKey.length()));
continue;
}
final String verboseKey = "--verbose";
if (cmd.startsWith(verboseKey)) {
verbose = true;
continue;
}
final String sourceSnapshotNameArgKey = "--sourceSnapshotName=";
if (cmd.startsWith(sourceSnapshotNameArgKey)) {
sourceSnapshotName = cmd.substring(sourceSnapshotNameArgKey.length());
continue;
}
final String sourceSnapshotTmpDirArgKey = "--sourceSnapshotTmpDir=";
if (cmd.startsWith(sourceSnapshotTmpDirArgKey)) {
sourceSnapshotTmpDir = cmd.substring(sourceSnapshotTmpDirArgKey.length());
continue;
}
final String peerSnapshotNameArgKey = "--peerSnapshotName=";
if (cmd.startsWith(peerSnapshotNameArgKey)) {
peerSnapshotName = cmd.substring(peerSnapshotNameArgKey.length());
continue;
}
final String peerSnapshotTmpDirArgKey = "--peerSnapshotTmpDir=";
if (cmd.startsWith(peerSnapshotTmpDirArgKey)) {
peerSnapshotTmpDir = cmd.substring(peerSnapshotTmpDirArgKey.length());
continue;
}
final String peerFSAddressArgKey = "--peerFSAddress=";
if (cmd.startsWith(peerFSAddressArgKey)) {
peerFSAddress = cmd.substring(peerFSAddressArgKey.length());
continue;
}
final String peerHBaseRootAddressArgKey = "--peerHBaseRootAddress=";
if (cmd.startsWith(peerHBaseRootAddressArgKey)) {
peerHBaseRootAddress = cmd.substring(peerHBaseRootAddressArgKey.length());
continue;
}
if (cmd.startsWith("--")) {
printUsage("Invalid argument '" + cmd + "'");
return false;
}
if (i == args.length-2) {
peerId = cmd;
}
if (i == args.length-1) {
tableName = cmd;
}
}
if ((sourceSnapshotName != null && sourceSnapshotTmpDir == null)
|| (sourceSnapshotName == null && sourceSnapshotTmpDir != null)) {
printUsage("Source snapshot name and snapshot temp location should be provided"
+ " to use snapshots in source cluster");
return false;
}
if (peerSnapshotName != null || peerSnapshotTmpDir != null || peerFSAddress != null
|| peerHBaseRootAddress != null) {
if (peerSnapshotName == null || peerSnapshotTmpDir == null || peerFSAddress == null
|| peerHBaseRootAddress == null) {
printUsage(
"Peer snapshot name, peer snapshot temp location, Peer HBase root address and "
+ "peer FSAddress should be provided to use snapshots in peer cluster");
return false;
}
}
// This is to avoid making recompare calls to source/peer tables when snapshots are used
if ((sourceSnapshotName != null || peerSnapshotName != null) && sleepMsBeforeReCompare > 0) {
printUsage(
"Using sleepMsBeforeReCompare along with snapshots is not allowed as snapshots are immutable");
return false;
}
} catch (Exception e) {
e.printStackTrace();
printUsage("Can't start because " + e.getMessage());
return false;
}
return true;
}
/*
* @param errorMsg Error message. Can be null.
*/
private static void printUsage(final String errorMsg) {
if (errorMsg != null && errorMsg.length() > 0) {
System.err.println("ERROR: " + errorMsg);
}
System.err.println("Usage: verifyrep [--starttime=X]" +
" [--endtime=Y] [--families=A] [--row-prefixes=B] [--delimiter=] [--recomparesleep=] " +
"[--batch=] [--verbose] [--sourceSnapshotName=P] [--sourceSnapshotTmpDir=Q] [--peerSnapshotName=R] "
+ "[--peerSnapshotTmpDir=S] [--peerFSAddress=T] [--peerHBaseRootAddress=U] <peerid> <tablename>");
System.err.println();
System.err.println("Options:");
System.err.println(" starttime beginning of the time range");
System.err.println(" without endtime means from starttime to forever");
System.err.println(" endtime end of the time range");
System.err.println(" versions number of cell versions to verify");
System.err.println(" batch batch count for scan, " +
"note that result row counts will no longer be actual number of rows when you use this option");
System.err.println(" raw includes raw scan if given in options");
System.err.println(" families comma-separated list of families to copy");
System.err.println(" row-prefixes comma-separated list of row key prefixes to filter on ");
System.err.println(" delimiter the delimiter used in display around rowkey");
System.err.println(" recomparesleep milliseconds to sleep before recompare row, " +
"default value is 0 which disables the recompare.");
System.err.println(" verbose logs row keys of good rows");
System.err.println(" sourceSnapshotName Source Snapshot Name");
System.err.println(" sourceSnapshotTmpDir Tmp location to restore source table snapshot");
System.err.println(" peerSnapshotName Peer Snapshot Name");
System.err.println(" peerSnapshotTmpDir Tmp location to restore peer table snapshot");
System.err.println(" peerFSAddress Peer cluster Hadoop FS address");
System.err.println(" peerHBaseRootAddress Peer cluster HBase root location");
System.err.println();
System.err.println("Args:");
System.err.println(" peerid Id of the peer used for verification, must match the one given for replication");
System.err.println(" tablename Name of the table to verify");
System.err.println();
System.err.println("Examples:");
System.err.println(" To verify the data replicated from TestTable for a 1 hour window with peer #5 ");
System.err.println(" $ hbase " +
"org.apache.hadoop.hbase.mapreduce.replication.VerifyReplication" +
" --starttime=1265875194289 --endtime=1265878794289 5 TestTable ");
}
@Override
public int run(String[] args) throws Exception {
Configuration conf = this.getConf();
Job job = createSubmittableJob(conf, args);
if (job != null) {
return job.waitForCompletion(true) ? 0 : 1;
}
return 1;
}
/**
* Main entry point.
*
* @param args The command line parameters.
* @throws Exception When running the job fails.
*/
public static void main(String[] args) throws Exception {
int res = ToolRunner.run(HBaseConfiguration.create(), new VerifyReplication(), args);
System.exit(res);
}
}