in hbase-hbck2/src/main/java/org/apache/hbase/hbck1/HBaseFsck.java [5148:5239]
protected HBaseFsck printUsageAndExit() {
StringWriter sw = new StringWriter(2048);
PrintWriter out = new PrintWriter(sw);
out.println("");
out.println("-----------------------------------------------------------------------");
out.println("NOTE: As of HBase version 2.0, the hbck tool is significantly changed.");
out.println("In general, all Read-Only options are supported and can be be used");
out.println("safely. Most -fix/ -repair options are NOT supported. Please see usage");
out.println("below for details on which options are not supported.");
out.println("-----------------------------------------------------------------------");
out.println("");
out.println("Usage: fsck [opts] {only tables}");
out.println(" where [opts] are:");
out.println(" -help Display help options (this)");
out.println(" -details Display full report of all regions.");
out.println(" -timelag <timeInSeconds> Process only regions that " +
" have not experienced any metadata updates in the last " +
" <timeInSeconds> seconds.");
out.println(" -sleepBeforeRerun <timeInSeconds> Sleep this many seconds" +
" before checking if the fix worked if run with -fix");
out.println(" -summary Print only summary of the tables and status.");
out.println(" -metaonly Only check the state of the hbase:meta table.");
out.println(" -sidelineDir <hdfs://> HDFS path to backup existing meta.");
out.println(" -boundaries Verify that regions boundaries are the same between " +
"META and store files.");
out.println(" -exclusive Abort if another hbck is exclusive or fixing.");
out.println("");
out.println(" Datafile Repair options: (expert features, use with caution!)");
out.println(" -checkCorruptHFiles Check all Hfiles by opening them to make " +
"sure they are valid");
out.println(" -sidelineCorruptHFiles Quarantine corrupted HFiles. " +
"implies -checkCorruptHFiles");
out.println("");
out.println(" Replication options");
out.println(" -fixReplication Deletes replication queues for removed peers");
out.println("");
out.println(" Metadata Repair options supported as of version 2.0: (expert features, use " +
"with caution!)");
out.println(" -fixVersionFile Try to fix missing hbase.version file in hdfs.");
out.println(" -fixReferenceFiles Try to offline lingering reference store files");
out.println(" -fixHFileLinks Try to offline lingering HFileLinks");
out.println(" -noHdfsChecking Don't load/check region info from HDFS."
+ " Assumes hbase:meta region info is good. Won't check/fix any HDFS issue, e.g. hole, " +
"orphan, or overlap");
out.println(" -ignorePreCheckPermission ignore filesystem permission pre-check");
out.println("");
out.println("NOTE: Following options are NOT supported as of HBase version 2.0+.");
out.println("");
out.println(" UNSUPPORTED Metadata Repair options: (expert features, use with caution!)");
out.println(" -fix Try to fix region assignments. This is for backwards " +
"compatiblity");
out.println(" -fixAssignments Try to fix region assignments. Replaces the old -fix");
out.println(" -fixMeta Try to fix meta problems. This assumes HDFS region info " +
"kis good.");
out.println(" -fixHdfsHoles Try to fix region holes in hdfs.");
out.println(" -fixHdfsOrphans Try to fix region dirs with no .regioninfo file in hdfs");
out.println(" -fixTableOrphans Try to fix table dirs with no .tableinfo file in hdfs " +
"(online mode only)");
out.println(" -fixHdfsOverlaps Try to fix region overlaps in hdfs.");
out.println(" -maxMerge <n> When fixing region overlaps, allow at most <n> regions " +
"to merge. (n=" + DEFAULT_MAX_MERGE +" by default)");
out.println(" -sidelineBigOverlaps When fixing region overlaps, allow to sideline big " +
"overlaps");
out.println(" -maxOverlapsToSideline <n> When fixing region overlaps, allow at most" +
" <n> regions to sideline per group. (n=" + DEFAULT_OVERLAPS_TO_SIDELINE +" by default)");
out.println(" -fixSplitParents Try to force offline split parents to be online.");
out.println(" -removeParents Try to offline and sideline lingering parents and keep " +
"daughter regions.");
out.println(" -fixEmptyMetaCells Try to fix hbase:meta entries not referencing any region"
+ " (empty REGIONINFO_QUALIFIER rows)");
out.println("");
out.println(" UNSUPPORTED Metadata Repair shortcuts");
out.println(" -repair Shortcut for -fixAssignments -fixMeta -fixHdfsHoles " +
"-fixHdfsOrphans -fixHdfsOverlaps -fixVersionFile -sidelineBigOverlaps " +
"-fixReferenceFiles -fixHFileLinks");
out.println(" -repairHoles Shortcut for -fixAssignments -fixMeta -fixHdfsHoles");
out.println("");
out.println(" Replication options");
out.println(" -fixReplication Deletes replication queues for removed peers");
out.println(" -cleanReplicationBrarier [tableName] clean the replication barriers " +
"of a specified table, tableName is required");
out.flush();
errors.reportError(ErrorReporter.ERROR_CODE.WRONG_USAGE, sw.toString());
setRetCode(-2);
return this;
}