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From "ryan rawson (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-1555) some java "concurrent" structures may not be so much after all!
Date Sat, 20 Jun 2009 04:10:07 GMT
some java "concurrent" structures may not be so much after all!
---------------------------------------------------------------

                 Key: HBASE-1555
                 URL: https://issues.apache.org/jira/browse/HBASE-1555
             Project: Hadoop HBase
          Issue Type: Bug
    Affects Versions: 0.20.0
            Reporter: ryan rawson
             Fix For: 0.20.0


during a huge import (high concurrenty, 56 writers) I have seen:

java.io.IOException: java.lang.NullPointerException
        at org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:832)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:822)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.put(HRegionServer.java:1775)
        at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:643)
        at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:913)
Caused by: java.lang.NullPointerException
        at java.util.concurrent.ConcurrentHashMap$Segment.put(ConcurrentHashMap.java:426)
        at java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:883)
        at org.apache.hadoop.hbase.regionserver.HRegion.obtainRowLock(HRegion.java:1557)
        at org.apache.hadoop.hbase.regionserver.HRegion.getLock(HRegion.java:1610)
        at org.apache.hadoop.hbase.regionserver.HRegion.put(HRegion.java:1225)
        at org.apache.hadoop.hbase.regionserver.HRegion.put(HRegion.java:1197)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.put(HRegionServer.java:1768)
        ... 5 more
2009-06-19 20:13:55,672 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: java.lang.NullPointerException
2009-06-19 20:13:55,672 INFO org.apache.hadoop.ipc.HBaseServer: IPC Server handler 5 on 60020,
call put([B@3160e069, [Lorg.apache.hadoop.hbase.client.Put;@4f2d26d2) from 10.10.20.226
:38741: error: java.io.IOException: java.lang.NullPointerException
java.io.IOException: java.lang.NullPointerException
        at org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:832)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:822)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.put(HRegionServer.java:1775)
        at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.hbase.ipc.HBaseRPC$Server.call(HBaseRPC.java:643)
        at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:913)
Caused by: java.lang.NullPointerException
        at java.util.concurrent.ConcurrentHashMap$Segment.put(ConcurrentHashMap.java:426)
        at java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:883)
        at org.apache.hadoop.hbase.regionserver.HRegion.obtainRowLock(HRegion.java:1557)
        at org.apache.hadoop.hbase.regionserver.HRegion.getLock(HRegion.java:1610)
        at org.apache.hadoop.hbase.regionserver.HRegion.put(HRegion.java:1225)
        at org.apache.hadoop.hbase.regionserver.HRegion.put(HRegion.java:1197)
        at org.apache.hadoop.hbase.regionserver.HRegionServer.put(HRegionServer.java:1768)
        ... 5 more

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