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  1. HBase
  2. HBASE-236

NPE on failed open of region

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.2.0
    • Fix Version/s: 0.2.0
    • Component/s: regionserver
    • Labels:
      None

      Description

      From Bryan Duxbury supplied log:

         1044 2007-12-15 04:37:56,052 INFO org.apache.hadoop.hbase.HRegionServer: MSG_REGION_OPEN : spider_pages,7_202623541,1197662034823
         1045 2007-12-15 04:37:56,060 ERROR org.apache.hadoop.hbase.HRegionServer: error opening region spider_pages,7_202623541,1197662034823
         1046 java.io.EOFException
         1047     at java.io.DataInputStream.readByte(DataInputStream.java:250)
         1048     at org.apache.hadoop.hbase.HStoreFile.loadInfo(HStoreFile.java:594)
         1049     at org.apache.hadoop.hbase.HStore.<init>(HStore.java:613)
         1050     at org.apache.hadoop.hbase.HRegion.<init>(HRegion.java:287)
         1051     at org.apache.hadoop.hbase.HRegionServer.openRegion(HRegionServer.java:1182)
         1052     at org.apache.hadoop.hbase.HRegionServer$Worker.run(HRegionServer.java:1133)
         1053     at java.lang.Thread.run(Thread.java:619)
         1054 2007-12-15 04:37:56,061 FATAL org.apache.hadoop.hbase.HRegionServer: Unhandled exception                                                                                                                                                                                                                               1055 java.lang.NullPointerException
         1056     at org.apache.hadoop.hbase.HRegionServer.reportClose(HRegionServer.java:1066)
         1057     at org.apache.hadoop.hbase.HRegionServer.openRegion(HRegionServer.java:1188)
         1058     at org.apache.hadoop.hbase.HRegionServer$Worker.run(HRegionServer.java:1133)
         1059     at java.lang.Thread.run(Thread.java:619)
         1060 2007-12-15 04:37:56,061 INFO org.apache.hadoop.hbase.HRegionServer: worker thread exiting
      

      I see same exception when we try to deploy same region on another server; the info file must be horked (Seems like something we could recover from reading through looking for highest sequence number; would be expensive but alternative is lost region).

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              • Assignee:
                jimk Jim Kellerman
                Reporter:
                stack Michael Stack
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                • Created:
                  Updated:
                  Resolved: