[hbase] NPE on failed open of region
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Key: HADOOP-2445
URL: https://issues.apache.org/jira/browse/HADOOP-2445
Project: Hadoop
Issue Type: Bug
Reporter: stack
Priority: Minor
>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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