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Posted to common-dev@hadoop.apache.org by "Bryan Duxbury (JIRA)" <ji...@apache.org> on 2007/12/18 01:32:42 UTC
[jira] Updated: (HADOOP-2445) [hbase] NPE on failed open of region
[ https://issues.apache.org/jira/browse/HADOOP-2445?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bryan Duxbury updated HADOOP-2445:
----------------------------------
Priority: Major (was: Minor)
Since there's data loss potential here, this seems like it should be higher priority.
> [hbase] NPE on failed open of region
> ------------------------------------
>
> Key: HADOOP-2445
> URL: https://issues.apache.org/jira/browse/HADOOP-2445
> Project: Hadoop
> Issue Type: Bug
> Reporter: stack
>
> From Bryan Duxbury supplied log:
> {code}
> 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
> {code}
> 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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