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From "Sebastian Bauer (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1621) merge tool should work on online cluster, but disabled table
Date Fri, 11 Feb 2011 13:01:57 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12993477#comment-12993477
] 

Sebastian Bauer commented on HBASE-1621:
----------------------------------------

last traceback was because onlinemerger was running from client and doesn't have hadoop configuration,
but this is something to track down:

11/02/11 13:56:52 DEBUG regionserver.Store: closed c
11/02/11 13:56:52 INFO regionserver.HRegion: Closed Golden_ATU,6879-w_2010_27_6CC5E20C77D7EA4771A44B432B281BD7,1287089222938.6dac71a9736509ad4cbbfa3f58df2f41.
11/02/11 13:56:52 DEBUG regionserver.HRegion: Closing Golden_ATU,6879-w_2010_28_383BE4774DBF96F224EEE3A41282E0D8,1287089224381.abb281eff02fdb5bc935d71a8dd7f27a.:
disabling compactions & flushes
11/02/11 13:56:52 DEBUG regionserver.HRegion: Updates disabled for region Golden_ATU,6879-w_2010_28_383BE4774DBF96F224EEE3A41282E0D8,1287089224381.abb281eff02fdb5bc935d71a8dd7f27a.
11/02/11 13:56:52 DEBUG hfile.HFile: On close of file hdfs://db2a:50001/hbase/Golden_ATU/abb281eff02fdb5bc935d71a8dd7f27a/c/5936293646315145921
evicted 0 block(s) of 149 total blocks
11/02/11 13:56:52 DEBUG regionserver.Store: closed c
11/02/11 13:56:52 INFO regionserver.HRegion: Closed Golden_ATU,6879-w_2010_28_383BE4774DBF96F224EEE3A41282E0D8,1287089224381.abb281eff02fdb5bc935d71a8dd7f27a.
11/02/11 13:56:52 FATAL util.Merge: Merge failed
        java.io.IOException: Files have same sequenceid: 1305035413
        at org.apache.hadoop.hbase.regionserver.HRegion.merge(HRegion.java:2952)
        at org.apache.hadoop.hbase.util.OnlineMerge.merge(OnlineMerge.java:294)
        at org.apache.hadoop.hbase.util.OnlineMerge.mergeRegions(OnlineMerge.java:230)
        at org.apache.hadoop.hbase.util.OnlineMerge.run(OnlineMerge.java:118)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
at org.apache.hadoop.hbase.util.OnlineMerge.main(OnlineMerge.java:393)
        11/02/11 13:56:52 DEBUG wal.HLog: main.logSyncer interrupted while waiting for sync
requests
        11/02/11 13:56:52 INFO wal.HLog: main.logSyncer exiting
        11/02/11 13:56:52 DEBUG wal.HLog: closing hlog writer in hdfs://db2a:50001/user/hbase/.logs_1297429009717
        11/02/11 13:56:52 DEBUG wal.HLog: Moved 1 log files to /user/hbase/.oldlogs
        11/02/11 13:56:53 INFO util.Merge: Verifying that file system is available...
        11/02/11 13:56:53 INFO util.Merge: Verifying that HBase is running...
        11/02/11 13:56:53 INFO zookeeper.ZooKeeper: Client environment:zookeeper.version=3.3.2-1031432,
built on 11/05/2010 05:32 GMT
        11/02/11 13:56:53 INFO zookeeper.ZooKeeper: Client environment:host.name=db2a.goldenline.pl


> merge tool should work on online cluster, but disabled table
> ------------------------------------------------------------
>
>                 Key: HBASE-1621
>                 URL: https://issues.apache.org/jira/browse/HBASE-1621
>             Project: HBase
>          Issue Type: Bug
>            Reporter: ryan rawson
>             Fix For: 0.92.0
>
>         Attachments: HBASE-1621-v2.patch, HBASE-1621.patch, hbase-onlinemerge.patch
>
>
> taking down the entire cluster to merge 2 regions is a pain, i dont see why the table
or regions specifically couldnt be taken offline, then merged then brought back up.
> this might need a new API to the regionservers so they can take direction from not just
the master.

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