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19 package org.apache.hadoop.hbase.snapshot;
20
21 import java.io.IOException;
22 import java.util.ArrayList;
23 import java.util.Collections;
24 import java.util.Comparator;
25 import java.util.LinkedList;
26 import java.util.List;
27
28 import org.apache.commons.logging.Log;
29 import org.apache.commons.logging.LogFactory;
30 import org.apache.hadoop.classification.InterfaceAudience;
31 import org.apache.hadoop.classification.InterfaceStability;
32 import org.apache.hadoop.conf.Configuration;
33 import org.apache.hadoop.conf.Configured;
34 import org.apache.hadoop.fs.FSDataInputStream;
35 import org.apache.hadoop.fs.FSDataOutputStream;
36 import org.apache.hadoop.fs.FileChecksum;
37 import org.apache.hadoop.fs.FileStatus;
38 import org.apache.hadoop.fs.FileSystem;
39 import org.apache.hadoop.fs.FileUtil;
40 import org.apache.hadoop.fs.Path;
41 import org.apache.hadoop.fs.permission.FsPermission;
42 import org.apache.hadoop.hbase.TableName;
43 import org.apache.hadoop.hbase.HBaseConfiguration;
44 import org.apache.hadoop.hbase.HConstants;
45 import org.apache.hadoop.hbase.io.HFileLink;
46 import org.apache.hadoop.hbase.io.HLogLink;
47 import org.apache.hadoop.hbase.mapreduce.JobUtil;
48 import org.apache.hadoop.hbase.protobuf.ProtobufUtil;
49 import org.apache.hadoop.hbase.protobuf.generated.HBaseProtos.SnapshotDescription;
50 import org.apache.hadoop.hbase.regionserver.StoreFileInfo;
51 import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
52 import org.apache.hadoop.hbase.util.FSUtils;
53 import org.apache.hadoop.hbase.util.Pair;
54 import org.apache.hadoop.io.NullWritable;
55 import org.apache.hadoop.io.SequenceFile;
56 import org.apache.hadoop.io.Text;
57 import org.apache.hadoop.mapreduce.Job;
58 import org.apache.hadoop.mapreduce.Mapper;
59 import org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat;
60 import org.apache.hadoop.mapreduce.lib.output.NullOutputFormat;
61 import org.apache.hadoop.util.StringUtils;
62 import org.apache.hadoop.util.Tool;
63 import org.apache.hadoop.util.ToolRunner;
64
65
66
67
68
69
70
71
72 @InterfaceAudience.Public
73 @InterfaceStability.Evolving
74 public final class ExportSnapshot extends Configured implements Tool {
75 private static final Log LOG = LogFactory.getLog(ExportSnapshot.class);
76
77 private static final String CONF_FILES_USER = "snapshot.export.files.attributes.user";
78 private static final String CONF_FILES_GROUP = "snapshot.export.files.attributes.group";
79 private static final String CONF_FILES_MODE = "snapshot.export.files.attributes.mode";
80 private static final String CONF_CHECKSUM_VERIFY = "snapshot.export.checksum.verify";
81 private static final String CONF_OUTPUT_ROOT = "snapshot.export.output.root";
82 private static final String CONF_INPUT_ROOT = "snapshot.export.input.root";
83
84 private static final String INPUT_FOLDER_PREFIX = "export-files.";
85
86
87 public enum Counter { MISSING_FILES, COPY_FAILED, BYTES_EXPECTED, BYTES_COPIED };
88
89 private static class ExportMapper extends Mapper<Text, NullWritable, NullWritable, NullWritable> {
90 final static int REPORT_SIZE = 1 * 1024 * 1024;
91 final static int BUFFER_SIZE = 64 * 1024;
92
93 private boolean verifyChecksum;
94 private String filesGroup;
95 private String filesUser;
96 private short filesMode;
97
98 private FileSystem outputFs;
99 private Path outputArchive;
100 private Path outputRoot;
101
102 private FileSystem inputFs;
103 private Path inputArchive;
104 private Path inputRoot;
105
106 @Override
107 public void setup(Context context) {
108 Configuration conf = context.getConfiguration();
109 verifyChecksum = conf.getBoolean(CONF_CHECKSUM_VERIFY, true);
110
111 filesGroup = conf.get(CONF_FILES_GROUP);
112 filesUser = conf.get(CONF_FILES_USER);
113 filesMode = (short)conf.getInt(CONF_FILES_MODE, 0);
114 outputRoot = new Path(conf.get(CONF_OUTPUT_ROOT));
115 inputRoot = new Path(conf.get(CONF_INPUT_ROOT));
116
117 inputArchive = new Path(inputRoot, HConstants.HFILE_ARCHIVE_DIRECTORY);
118 outputArchive = new Path(outputRoot, HConstants.HFILE_ARCHIVE_DIRECTORY);
119
120 try {
121 inputFs = FileSystem.get(inputRoot.toUri(), conf);
122 } catch (IOException e) {
123 throw new RuntimeException("Could not get the input FileSystem with root=" + inputRoot, e);
124 }
125
126 try {
127 outputFs = FileSystem.get(outputRoot.toUri(), conf);
128 } catch (IOException e) {
129 throw new RuntimeException("Could not get the output FileSystem with root="+ outputRoot, e);
130 }
131 }
132
133 @Override
134 public void map(Text key, NullWritable value, Context context)
135 throws InterruptedException, IOException {
136 Path inputPath = new Path(key.toString());
137 Path outputPath = getOutputPath(inputPath);
138
139 LOG.info("copy file input=" + inputPath + " output=" + outputPath);
140 if (copyFile(context, inputPath, outputPath)) {
141 LOG.info("copy completed for input=" + inputPath + " output=" + outputPath);
142 }
143 }
144
145
146
147
148
149
150 private Path getOutputPath(final Path inputPath) throws IOException {
151 Path path;
152 if (HFileLink.isHFileLink(inputPath) || StoreFileInfo.isReference(inputPath)) {
153 String family = inputPath.getParent().getName();
154 TableName table =
155 HFileLink.getReferencedTableName(inputPath.getName());
156 String region = HFileLink.getReferencedRegionName(inputPath.getName());
157 String hfile = HFileLink.getReferencedHFileName(inputPath.getName());
158 path = new Path(FSUtils.getTableDir(new Path("./"), table),
159 new Path(region, new Path(family, hfile)));
160 } else if (isHLogLinkPath(inputPath)) {
161 String logName = inputPath.getName();
162 path = new Path(new Path(outputRoot, HConstants.HREGION_OLDLOGDIR_NAME), logName);
163 } else {
164 path = inputPath;
165 }
166 return new Path(outputArchive, path);
167 }
168
169 private boolean copyFile(final Context context, final Path inputPath, final Path outputPath)
170 throws IOException {
171 FSDataInputStream in = openSourceFile(inputPath);
172 if (in == null) {
173 context.getCounter(Counter.MISSING_FILES).increment(1);
174 return false;
175 }
176
177 try {
178
179 FileStatus inputStat = getFileStatus(inputFs, inputPath);
180 if (inputStat == null) return false;
181
182
183 if (outputFs.exists(outputPath)) {
184 FileStatus outputStat = outputFs.getFileStatus(outputPath);
185 if (sameFile(inputStat, outputStat)) {
186 LOG.info("Skip copy " + inputPath + " to " + outputPath + ", same file.");
187 return true;
188 }
189 }
190
191 context.getCounter(Counter.BYTES_EXPECTED).increment(inputStat.getLen());
192
193
194 outputFs.mkdirs(outputPath.getParent());
195 FSDataOutputStream out = outputFs.create(outputPath, true);
196 try {
197 if (!copyData(context, inputPath, in, outputPath, out, inputStat.getLen()))
198 return false;
199 } finally {
200 out.close();
201 }
202
203
204 return preserveAttributes(outputPath, inputStat);
205 } finally {
206 in.close();
207 }
208 }
209
210
211
212
213 private boolean preserveAttributes(final Path path, final FileStatus refStat) {
214 FileStatus stat;
215 try {
216 stat = outputFs.getFileStatus(path);
217 } catch (IOException e) {
218 LOG.warn("Unable to get the status for file=" + path);
219 return false;
220 }
221
222 try {
223 if (filesMode > 0 && stat.getPermission().toShort() != filesMode) {
224 outputFs.setPermission(path, new FsPermission(filesMode));
225 } else if (!stat.getPermission().equals(refStat.getPermission())) {
226 outputFs.setPermission(path, refStat.getPermission());
227 }
228 } catch (IOException e) {
229 LOG.error("Unable to set the permission for file=" + path, e);
230 return false;
231 }
232
233 try {
234 String user = (filesUser != null) ? filesUser : refStat.getOwner();
235 String group = (filesGroup != null) ? filesGroup : refStat.getGroup();
236 if (!(user.equals(stat.getOwner()) && group.equals(stat.getGroup()))) {
237 outputFs.setOwner(path, user, group);
238 }
239 } catch (IOException e) {
240 LOG.error("Unable to set the owner/group for file=" + path, e);
241 return false;
242 }
243
244 return true;
245 }
246
247 private boolean copyData(final Context context,
248 final Path inputPath, final FSDataInputStream in,
249 final Path outputPath, final FSDataOutputStream out,
250 final long inputFileSize) {
251 final String statusMessage = "copied %s/" + StringUtils.humanReadableInt(inputFileSize) +
252 " (%.3f%%)";
253
254 try {
255 byte[] buffer = new byte[BUFFER_SIZE];
256 long totalBytesWritten = 0;
257 int reportBytes = 0;
258 int bytesRead;
259
260 while ((bytesRead = in.read(buffer)) > 0) {
261 out.write(buffer, 0, bytesRead);
262 totalBytesWritten += bytesRead;
263 reportBytes += bytesRead;
264
265 if (reportBytes >= REPORT_SIZE) {
266 context.getCounter(Counter.BYTES_COPIED).increment(reportBytes);
267 context.setStatus(String.format(statusMessage,
268 StringUtils.humanReadableInt(totalBytesWritten),
269 totalBytesWritten/(float)inputFileSize) +
270 " from " + inputPath + " to " + outputPath);
271 reportBytes = 0;
272 }
273 }
274
275 context.getCounter(Counter.BYTES_COPIED).increment(reportBytes);
276 context.setStatus(String.format(statusMessage,
277 StringUtils.humanReadableInt(totalBytesWritten),
278 totalBytesWritten/(float)inputFileSize) +
279 " from " + inputPath + " to " + outputPath);
280
281
282 if (totalBytesWritten != inputFileSize) {
283 LOG.error("number of bytes copied not matching copied=" + totalBytesWritten +
284 " expected=" + inputFileSize + " for file=" + inputPath);
285 context.getCounter(Counter.COPY_FAILED).increment(1);
286 return false;
287 }
288
289 return true;
290 } catch (IOException e) {
291 LOG.error("Error copying " + inputPath + " to " + outputPath, e);
292 context.getCounter(Counter.COPY_FAILED).increment(1);
293 return false;
294 }
295 }
296
297 private FSDataInputStream openSourceFile(final Path path) {
298 try {
299 if (HFileLink.isHFileLink(path) || StoreFileInfo.isReference(path)) {
300 return new HFileLink(inputRoot, inputArchive, path).open(inputFs);
301 } else if (isHLogLinkPath(path)) {
302 String serverName = path.getParent().getName();
303 String logName = path.getName();
304 return new HLogLink(inputRoot, serverName, logName).open(inputFs);
305 }
306 return inputFs.open(path);
307 } catch (IOException e) {
308 LOG.error("Unable to open source file=" + path, e);
309 return null;
310 }
311 }
312
313 private FileStatus getFileStatus(final FileSystem fs, final Path path) {
314 try {
315 if (HFileLink.isHFileLink(path) || StoreFileInfo.isReference(path)) {
316 HFileLink link = new HFileLink(inputRoot, inputArchive, path);
317 return link.getFileStatus(fs);
318 } else if (isHLogLinkPath(path)) {
319 String serverName = path.getParent().getName();
320 String logName = path.getName();
321 return new HLogLink(inputRoot, serverName, logName).getFileStatus(fs);
322 }
323 return fs.getFileStatus(path);
324 } catch (IOException e) {
325 LOG.warn("Unable to get the status for file=" + path);
326 return null;
327 }
328 }
329
330 private FileChecksum getFileChecksum(final FileSystem fs, final Path path) {
331 try {
332 return fs.getFileChecksum(path);
333 } catch (IOException e) {
334 LOG.warn("Unable to get checksum for file=" + path, e);
335 return null;
336 }
337 }
338
339
340
341
342
343 private boolean sameFile(final FileStatus inputStat, final FileStatus outputStat) {
344
345 if (inputStat.getLen() != outputStat.getLen()) return false;
346
347
348 if (!verifyChecksum) return true;
349
350
351 FileChecksum inChecksum = getFileChecksum(inputFs, inputStat.getPath());
352 if (inChecksum == null) return false;
353
354 FileChecksum outChecksum = getFileChecksum(outputFs, outputStat.getPath());
355 if (outChecksum == null) return false;
356
357 return inChecksum.equals(outChecksum);
358 }
359
360
361
362
363
364
365 private static boolean isHLogLinkPath(final Path path) {
366 return path.depth() == 2;
367 }
368 }
369
370
371
372
373
374 private List<Pair<Path, Long>> getSnapshotFiles(final FileSystem fs, final Path snapshotDir)
375 throws IOException {
376 SnapshotDescription snapshotDesc = SnapshotDescriptionUtils.readSnapshotInfo(fs, snapshotDir);
377
378 final List<Pair<Path, Long>> files = new ArrayList<Pair<Path, Long>>();
379 final TableName table =
380 TableName.valueOf(snapshotDesc.getTable());
381 final Configuration conf = getConf();
382
383
384 SnapshotReferenceUtil.visitReferencedFiles(fs, snapshotDir,
385 new SnapshotReferenceUtil.FileVisitor() {
386 public void storeFile (final String region, final String family, final String hfile)
387 throws IOException {
388 Path path = new Path(family, HFileLink.createHFileLinkName(table, region, hfile));
389 long size = new HFileLink(conf, path).getFileStatus(fs).getLen();
390 files.add(new Pair<Path, Long>(path, size));
391 }
392
393 public void recoveredEdits (final String region, final String logfile)
394 throws IOException {
395
396 }
397
398 public void logFile (final String server, final String logfile)
399 throws IOException {
400 long size = new HLogLink(conf, server, logfile).getFileStatus(fs).getLen();
401 files.add(new Pair<Path, Long>(new Path(server, logfile), size));
402 }
403 });
404
405 return files;
406 }
407
408
409
410
411
412
413
414
415
416 static List<List<Path>> getBalancedSplits(final List<Pair<Path, Long>> files, int ngroups) {
417
418 Collections.sort(files, new Comparator<Pair<Path, Long>>() {
419 public int compare(Pair<Path, Long> a, Pair<Path, Long> b) {
420 long r = a.getSecond() - b.getSecond();
421 return (r < 0) ? -1 : ((r > 0) ? 1 : 0);
422 }
423 });
424
425
426 List<List<Path>> fileGroups = new LinkedList<List<Path>>();
427 long[] sizeGroups = new long[ngroups];
428 int hi = files.size() - 1;
429 int lo = 0;
430
431 List<Path> group;
432 int dir = 1;
433 int g = 0;
434
435 while (hi >= lo) {
436 if (g == fileGroups.size()) {
437 group = new LinkedList<Path>();
438 fileGroups.add(group);
439 } else {
440 group = fileGroups.get(g);
441 }
442
443 Pair<Path, Long> fileInfo = files.get(hi--);
444
445
446 sizeGroups[g] += fileInfo.getSecond();
447 group.add(fileInfo.getFirst());
448
449
450 g += dir;
451 if (g == ngroups) {
452 dir = -1;
453 g = ngroups - 1;
454 } else if (g < 0) {
455 dir = 1;
456 g = 0;
457 }
458 }
459
460 if (LOG.isDebugEnabled()) {
461 for (int i = 0; i < sizeGroups.length; ++i) {
462 LOG.debug("export split=" + i + " size=" + StringUtils.humanReadableInt(sizeGroups[i]));
463 }
464 }
465
466 return fileGroups;
467 }
468
469 private static Path getInputFolderPath(Configuration conf)
470 throws IOException, InterruptedException {
471 Path stagingDir = JobUtil.getStagingDir(conf);
472 return new Path(stagingDir, INPUT_FOLDER_PREFIX +
473 String.valueOf(EnvironmentEdgeManager.currentTimeMillis()));
474 }
475
476
477
478
479
480
481
482 private static Path[] createInputFiles(final Configuration conf,
483 final List<Pair<Path, Long>> snapshotFiles, int mappers)
484 throws IOException, InterruptedException {
485 Path inputFolderPath = getInputFolderPath(conf);
486 FileSystem fs = inputFolderPath.getFileSystem(conf);
487 LOG.debug("Input folder location: " + inputFolderPath);
488
489 List<List<Path>> splits = getBalancedSplits(snapshotFiles, mappers);
490 Path[] inputFiles = new Path[splits.size()];
491
492 Text key = new Text();
493 for (int i = 0; i < inputFiles.length; i++) {
494 List<Path> files = splits.get(i);
495 inputFiles[i] = new Path(inputFolderPath, String.format("export-%d.seq", i));
496 SequenceFile.Writer writer = SequenceFile.createWriter(fs, conf, inputFiles[i],
497 Text.class, NullWritable.class);
498 LOG.debug("Input split: " + i);
499 try {
500 for (Path file: files) {
501 LOG.debug(file.toString());
502 key.set(file.toString());
503 writer.append(key, NullWritable.get());
504 }
505 } finally {
506 writer.close();
507 }
508 }
509
510 return inputFiles;
511 }
512
513
514
515
516 private boolean runCopyJob(final Path inputRoot, final Path outputRoot,
517 final List<Pair<Path, Long>> snapshotFiles, final boolean verifyChecksum,
518 final String filesUser, final String filesGroup, final int filesMode,
519 final int mappers) throws IOException, InterruptedException, ClassNotFoundException {
520 Configuration conf = getConf();
521 if (filesGroup != null) conf.set(CONF_FILES_GROUP, filesGroup);
522 if (filesUser != null) conf.set(CONF_FILES_USER, filesUser);
523 conf.setInt(CONF_FILES_MODE, filesMode);
524 conf.setBoolean(CONF_CHECKSUM_VERIFY, verifyChecksum);
525 conf.set(CONF_OUTPUT_ROOT, outputRoot.toString());
526 conf.set(CONF_INPUT_ROOT, inputRoot.toString());
527 conf.setInt("mapreduce.job.maps", mappers);
528
529 Job job = new Job(conf);
530 job.setJobName("ExportSnapshot");
531 job.setJarByClass(ExportSnapshot.class);
532 job.setMapperClass(ExportMapper.class);
533 job.setInputFormatClass(SequenceFileInputFormat.class);
534 job.setOutputFormatClass(NullOutputFormat.class);
535 job.setMapSpeculativeExecution(false);
536 job.setNumReduceTasks(0);
537 for (Path path: createInputFiles(conf, snapshotFiles, mappers)) {
538 LOG.debug("Add Input Path=" + path);
539 SequenceFileInputFormat.addInputPath(job, path);
540 }
541
542 return job.waitForCompletion(true);
543 }
544
545
546
547
548
549 @Override
550 public int run(String[] args) throws Exception {
551 boolean verifyChecksum = true;
552 String snapshotName = null;
553 String filesGroup = null;
554 String filesUser = null;
555 Path outputRoot = null;
556 int filesMode = 0;
557 int mappers = getConf().getInt("mapreduce.job.maps", 1);
558
559
560 for (int i = 0; i < args.length; i++) {
561 String cmd = args[i];
562 try {
563 if (cmd.equals("-snapshot")) {
564 snapshotName = args[++i];
565 } else if (cmd.equals("-copy-to")) {
566 outputRoot = new Path(args[++i]);
567 } else if (cmd.equals("-no-checksum-verify")) {
568 verifyChecksum = false;
569 } else if (cmd.equals("-mappers")) {
570 mappers = Integer.parseInt(args[++i]);
571 } else if (cmd.equals("-chuser")) {
572 filesUser = args[++i];
573 } else if (cmd.equals("-chgroup")) {
574 filesGroup = args[++i];
575 } else if (cmd.equals("-chmod")) {
576 filesMode = Integer.parseInt(args[++i], 8);
577 } else if (cmd.equals("-h") || cmd.equals("--help")) {
578 printUsageAndExit();
579 } else {
580 System.err.println("UNEXPECTED: " + cmd);
581 printUsageAndExit();
582 }
583 } catch (Exception e) {
584 printUsageAndExit();
585 }
586 }
587
588
589 if (snapshotName == null) {
590 System.err.println("Snapshot name not provided.");
591 printUsageAndExit();
592 }
593
594 if (outputRoot == null) {
595 System.err.println("Destination file-system not provided.");
596 printUsageAndExit();
597 }
598
599 Configuration conf = getConf();
600 Path inputRoot = FSUtils.getRootDir(conf);
601 FileSystem inputFs = FileSystem.get(conf);
602 FileSystem outputFs = FileSystem.get(outputRoot.toUri(), conf);
603
604 Path snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(snapshotName, inputRoot);
605 Path snapshotTmpDir = SnapshotDescriptionUtils.getWorkingSnapshotDir(snapshotName, outputRoot);
606 Path outputSnapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(snapshotName, outputRoot);
607
608
609 if (outputFs.exists(outputSnapshotDir)) {
610 System.err.println("The snapshot '" + snapshotName +
611 "' already exists in the destination: " + outputSnapshotDir);
612 return 1;
613 }
614
615
616 if (outputFs.exists(snapshotTmpDir)) {
617 System.err.println("A snapshot with the same name '" + snapshotName + "' may be in-progress");
618 System.err.println("Please check " + snapshotTmpDir + ". If the snapshot has completed, ");
619 System.err.println("consider removing " + snapshotTmpDir + " before retrying export");
620 return 1;
621 }
622
623
624 final List<Pair<Path, Long>> files = getSnapshotFiles(inputFs, snapshotDir);
625
626
627
628
629 try {
630 FileUtil.copy(inputFs, snapshotDir, outputFs, snapshotTmpDir, false, false, conf);
631 } catch (IOException e) {
632 System.err.println("Failed to copy the snapshot directory: from=" + snapshotDir +
633 " to=" + snapshotTmpDir);
634 e.printStackTrace(System.err);
635 return 1;
636 }
637
638
639
640
641 try {
642 if (files.size() == 0) {
643 LOG.warn("There are 0 store file to be copied. There may be no data in the table.");
644 } else {
645 if (!runCopyJob(inputRoot, outputRoot, files, verifyChecksum,
646 filesUser, filesGroup, filesMode, mappers)) {
647 throw new ExportSnapshotException("Snapshot export failed!");
648 }
649 }
650
651
652 if (!outputFs.rename(snapshotTmpDir, outputSnapshotDir)) {
653 System.err.println("Snapshot export failed!");
654 System.err.println("Unable to rename snapshot directory from=" +
655 snapshotTmpDir + " to=" + outputSnapshotDir);
656 return 1;
657 }
658
659 return 0;
660 } catch (Exception e) {
661 System.err.println("Snapshot export failed!");
662 e.printStackTrace(System.err);
663 outputFs.delete(outputSnapshotDir, true);
664 return 1;
665 }
666 }
667
668
669 private void printUsageAndExit() {
670 System.err.printf("Usage: bin/hbase %s [options]%n", getClass().getName());
671 System.err.println(" where [options] are:");
672 System.err.println(" -h|-help Show this help and exit.");
673 System.err.println(" -snapshot NAME Snapshot to restore.");
674 System.err.println(" -copy-to NAME Remote destination hdfs://");
675 System.err.println(" -no-checksum-verify Do not verify checksum.");
676 System.err.println(" -chuser USERNAME Change the owner of the files to the specified one.");
677 System.err.println(" -chgroup GROUP Change the group of the files to the specified one.");
678 System.err.println(" -chmod MODE Change the permission of the files to the specified one.");
679 System.err.println(" -mappers Number of mappers to use during the copy (mapreduce.job.maps).");
680 System.err.println();
681 System.err.println("Examples:");
682 System.err.println(" hbase " + getClass() + " \\");
683 System.err.println(" -snapshot MySnapshot -copy-to hdfs:///srv2:8082/hbase \\");
684 System.err.println(" -chuser MyUser -chgroup MyGroup -chmod 700 -mappers 16");
685 System.exit(1);
686 }
687
688
689
690
691
692
693
694
695 static int innerMain(final Configuration conf, final String [] args) throws Exception {
696 return ToolRunner.run(conf, new ExportSnapshot(), args);
697 }
698
699 public static void main(String[] args) throws Exception {
700 System.exit(innerMain(HBaseConfiguration.create(), args));
701 }
702 }