HBase
  1. HBase
  2. HBASE-5008

The clusters can't provide services because Region can't flush.

    Details

    • Type: Bug Bug
    • Status: Resolved
    • Priority: Blocker Blocker
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.90.6, 0.92.0
    • Component/s: regionserver
    • Labels:
      None
    • Hadoop Flags:
      Reviewed

      Description

      Hbase version 0.90.4 + patches

      My analysis is as follows:

      //Started splitting region b24d8ccb852ff742f2a27d01b7f5853e and closed region.

      2011-12-10 17:32:48,653 INFO org.apache.hadoop.hbase.regionserver.SplitTransaction: Starting split of region Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.
      2011-12-10 17:32:49,759 DEBUG org.apache.hadoop.hbase.regionserver.HRegion: Closing Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.: disabling compactions & flushes
      2011-12-10 17:32:49,759 INFO org.apache.hadoop.hbase.regionserver.HRegion: Running close preflush of Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.

      //Processed a flush request and skipped , But flushRequested had set to true
      2011-12-10 17:33:06,963 DEBUG org.apache.hadoop.hbase.regionserver.HRegion: Started memstore flush for Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e., current region memstore size 12.6m
      2011-12-10 17:33:17,277 DEBUG org.apache.hadoop.hbase.regionserver.HRegion: Skipping flush on Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e. because closing

      //split region b24d8ccb852ff742f2a27d01b7f5853 failed and rolled back, flushRequested flag was true, So all handle was blocked

      2011-12-10 17:34:01,293 INFO org.apache.hadoop.hbase.regionserver.SplitTransaction: Cleaned up old failed split transaction detritus: hdfs://193.195.18.121:9000/hbase/Htable_UFDR_004/b24d8ccb852ff742f2a27d01b7f5853e/splits
      2011-12-10 17:34:01,294 INFO org.apache.hadoop.hbase.regionserver.HRegion: Onlined Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.; next sequenceid=15494173
      2011-12-10 17:34:01,295 INFO org.apache.hadoop.hbase.regionserver.CompactSplitThread: Successful rollback of failed split of Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.
      2011-12-10 17:43:10,147 INFO org.apache.hadoop.hbase.regionserver.HRegion: Blocking updates for 'IPC Server handler 19 on 20020' on region
      Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.: memstore size 384.0m is >= than blocking 384.0m size

      // All handles had been blocked. The clusters could not provide services

      2011-12-10 17:34:01,295 INFO org.apache.hadoop.hbase.regionserver.CompactSplitThread: Successful rollback of failed split of Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.
      2011-12-10 17:43:10,147 INFO org.apache.hadoop.hbase.regionserver.HRegion: Blocking updates for 'IPC Server handler 19 on 20020' on region Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.: memstore size 384.0m is >= than blocking 384.0m size
      2011-12-10 17:43:10,192 INFO org.apache.hadoop.hbase.regionserver.HRegion: Blocking updates for 'IPC Server handler 34 on 20020' on region Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.: memstore size 384.0m is >= than blocking 384.0m size
      2011-12-10 17:43:10,193 INFO org.apache.hadoop.hbase.regionserver.HRegion: Blocking updates for 'IPC Server handler 51 on 20020' on region Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.: memstore size 384.0m is >= than blocking 384.0m size
      2011-12-10 17:43:10,196 INFO org.apache.hadoop.hbase.regionserver.HRegion: Blocking updates for 'IPC Server handler 85 on 20020' on region Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.: memstore size 384.0m is >= than blocking 384.0m size
      2011-12-10 17:43:10,199 INFO org.apache.hadoop.hbase.regionserver.HRegion: Blocking updates for 'IPC Server handler 88 on 20020' on region Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.: memstore size 384.0m is >= than blocking 384.0m size
      2011-12-10 17:43:10,202 INFO org.apache.hadoop.hbase.regionserver.HRegion: Blocking updates for 'IPC Server handler 44 on 20020' on region Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.: memstore size 384.0m is >= than blocking 384.0m size
      2011-12-10 17:43:11,663 INFO org.apache.hadoop.hbase.regionserver.HRegion: Blocking updates for 'IPC Server handler 2 on 20020' on region Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.: memstore size 384.0m is >= than blocking 384.0m size
      2011-12-10 17:43:11,665 INFO org.apache.hadoop.hbase.regionserver.HRegion: Blocking updates for 'IPC Server handler 10 on 20020' on region Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.: memstore size 384.0m is >= than blocking 384.0m size
      2011-12-10 17:43:11,670 INFO org.apache.hadoop.hbase.regionserver.HRegion: Blocking updates for 'IPC Server handler 75 on 20020' on region Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.: memstore size 384.0m is >= than blocking 384.0m size
      2011-12-10 17:43:11,671 INFO org.apache.hadoop.hbase.regionserver.HRegion: Blocking updates for 'IPC Server handler 98 on 20020' on region Htable_UFDR_004,09781,1323508582833.b24d8ccb852ff742f2a27d01b7f5853e.: memstore size 384.0m is >= than blocking 384.0m size
      2011-12-10 17:43:11,680 INFO org.apache.hadoop.hbase.regionserver.HRegion: Blocking updates for 'IPC Server handler 11 on 20020' on region

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          • Assignee:
            gaojinchao
            Reporter:
            gaojinchao
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            • Created:
              Updated:
              Resolved:

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