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From Parmod Mehta <parmod.me...@gmail.com>
Subject HBase region merge problem
Date Mon, 12 Sep 2011 17:33:35 GMT
Running the merge tool to merge regions on hbase-0.90.1-cdh3u0 run into this
exception trace. The first INFO level log message I guess is ok (checking if
the cluster is down).

Not sure - why we running into this? bug?

java.lang.IllegalArgumentException: Wrong FS: hdfs://
internalhost.com:54310/hbase/-ROOT-/70236052/.regioninfo, expected: file:///


2011-09-12 10:21:38,364 INFO  [main] util.Merge(82): Verifying that file
system is available...
2011-09-12 10:21:38,370 INFO  [main] util.Merge(91): Verifying that HBase is
not running...
2011-09-12 10:21:38,576 INFO  [main]
client.HConnectionManager$HConnectionImplementation(355): ZooKeeper
available but no active master location found
2011-09-12 10:21:38,578 INFO  [main]
client.HConnectionManager$HConnectionImplementation(372): getMaster attempt
0 of 1 failed; no more retrying.
org.apache.hadoop.hbase.MasterNotRunningException
        at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.getMaster(HConnectionManager.java:356)
        at
org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:90)
        at
org.apache.hadoop.hbase.client.HBaseAdmin.checkHBaseAvailable(HBaseAdmin.java:1202)
        at org.apache.hadoop.hbase.util.Merge.run(Merge.java:93)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.hbase.util.Merge.main(Merge.java:379)
2011-09-12 10:21:38,913 INFO  [main] util.Merge(199): Merging regions
TABLE_2,ERSx0973541,1305737576487.c0a59ee581f619456c962227073f9dd6. and
TABLE_2,LEx09136249,1305737576487.85f0adaeb78d362596ea8d178bda5629. in table
TABLE_2
2011-09-12 10:21:38,940 INFO  [main] wal.HLog(364): HLog configuration:
blocksize=32 MB, rollsize=30.4 MB, enabled=true, flushlogentries=1,
optionallogflushinternal=1000ms
2011-09-12 10:21:39,016 WARN  [main] util.NativeCodeLoader(52): Unable to
load native-hadoop library for your platform... using builtin-java classes
where applicable
2011-09-12 10:21:39,602 INFO  [main] wal.SequenceFileLogWriter(126): Using
syncFs -- HDFS-200
2011-09-12 10:21:39,605 INFO  [main] wal.HLog(510): New hlog
/home/pmehta/.logs_1315848098931/hlog.1315848098940
2011-09-12 10:21:39,606 INFO  [main] wal.HLog(396):
getNumCurrentReplicas--HDFS-826 not available;
hdfs_out=org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSOutputSummer@3a289d2e,
exception=org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSOutputSummer.getNumCurrentReplicas()
2011-09-12 10:21:39,631 FATAL [main] util.Merge(114): Merge failed
java.lang.IllegalArgumentException: Wrong FS: hdfs://
internalhost.com:54310/hbase/-ROOT-/70236052/.regioninfo, expected: file:///
        at org.apache.hadoop.fs.FileSystem.checkPath(FileSystem.java:410)
        at
org.apache.hadoop.fs.RawLocalFileSystem.pathToFile(RawLocalFileSystem.java:56)
        at
org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:379)
        at
org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:251)
        at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:748)
        at
org.apache.hadoop.hbase.regionserver.HRegion.checkRegioninfoOnFilesystem(HRegion.java:408)
        at
org.apache.hadoop.hbase.regionserver.HRegion.initialize(HRegion.java:337)
        at
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:2546)
        at
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:2532)
        at
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:2501)
        at
org.apache.hadoop.hbase.util.MetaUtils.openRootRegion(MetaUtils.java:269)
        at
org.apache.hadoop.hbase.util.MetaUtils.scanRootRegion(MetaUtils.java:201)
        at
org.apache.hadoop.hbase.util.Merge.mergeTwoRegions(Merge.java:204)
        at org.apache.hadoop.hbase.util.Merge.run(Merge.java:110)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.hbase.util.Merge.main(Merge.java:379)
2011-09-12 10:21:39,634 INFO  [main.logSyncer] wal.HLog$LogSyncer(973):
main.logSyncer exiting
2011-09-12 10:21:39,640 ERROR [main] util.Merge(381): exiting due to error
java.lang.IllegalArgumentException: Wrong FS: hdfs://
internalhost.com:54310/hbase/.META./1028785192/.regioninfo, expected:
file:///
        at org.apache.hadoop.fs.FileSystem.checkPath(FileSystem.java:410)
        at
org.apache.hadoop.fs.RawLocalFileSystem.pathToFile(RawLocalFileSystem.java:56)
        at
org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(RawLocalFileSystem.java:379)
        at
org.apache.hadoop.fs.FilterFileSystem.getFileStatus(FilterFileSystem.java:251)
        at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:748)
        at
org.apache.hadoop.hbase.regionserver.HRegion.checkRegioninfoOnFilesystem(HRegion.java:408)
        at
org.apache.hadoop.hbase.regionserver.HRegion.initialize(HRegion.java:337)
        at
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:2546)
        at
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:2532)
        at
org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:2501)
        at
org.apache.hadoop.hbase.util.MetaUtils.openMetaRegion(MetaUtils.java:276)
        at
org.apache.hadoop.hbase.util.MetaUtils.scanMetaRegion(MetaUtils.java:261)
        at org.apache.hadoop.hbase.util.Merge.run(Merge.java:115)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.hbase.util.Merge.main(Merge.java:379)


thanks

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