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Posted to dev@hbase.apache.org by "Sam Pullara (JIRA)" <ji...@apache.org> on 2009/12/30 08:17:29 UTC
[jira] Updated: (HBASE-2077) NullPointerException with an open
scanner that expired causing an immediate region server shutdown
[ https://issues.apache.org/jira/browse/HBASE-2077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sam Pullara updated HBASE-2077:
-------------------------------
Attachment: [Bug_HBASE-2077]_Fixes_a_very_rare_race_condition_between_lease_expiration_and_renewal.patch
Patch to fix race condition
> NullPointerException with an open scanner that expired causing an immediate region server shutdown
> --------------------------------------------------------------------------------------------------
>
> Key: HBASE-2077
> URL: https://issues.apache.org/jira/browse/HBASE-2077
> Project: Hadoop HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.20.2
> Environment: Hadoop 0.20.0, Mac OS X, Java 6
> Reporter: Sam Pullara
> Fix For: 0.20.3
>
> Attachments: [Bug_HBASE-2077]_Fixes_a_very_rare_race_condition_between_lease_expiration_and_renewal.patch
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> 2009-12-29 18:05:55,432 INFO org.apache.hadoop.hbase.regionserver.HRegionServer: Scanner -4250070597157694417 lease expired
> 2009-12-29 18:05:55,443 ERROR org.apache.hadoop.hbase.regionserver.HRegionServer:
> java.lang.NullPointerException
> at org.apache.hadoop.hbase.KeyValue$KVComparator.compare(KeyValue.java:1310)
> at org.apache.hadoop.hbase.regionserver.KeyValueHeap$KVScannerComparator.compare(KeyValueHeap.java:136)
> at org.apache.hadoop.hbase.regionserver.KeyValueHeap$KVScannerComparator.compare(KeyValueHeap.java:127)
> at org.apache.hadoop.hbase.regionserver.KeyValueHeap$KVScannerComparator.compare(KeyValueHeap.java:117)
> at java.util.PriorityQueue.siftDownUsingComparator(PriorityQueue.java:641)
> at java.util.PriorityQueue.siftDown(PriorityQueue.java:612)
> at java.util.PriorityQueue.poll(PriorityQueue.java:523)
> at org.apache.hadoop.hbase.regionserver.KeyValueHeap.next(KeyValueHeap.java:113)
> at org.apache.hadoop.hbase.regionserver.HRegion$RegionScanner.nextInternal(HRegion.java:1776)
> at org.apache.hadoop.hbase.regionserver.HRegion$RegionScanner.next(HRegion.java:1719)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.next(HRegionServer.java:1944)
> at sun.reflect.GeneratedMethodAccessor13.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$Server.call(HBaseRPC.java:648)
> at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:915)
> 2009-12-29 18:05:55,446 INFO org.apache.hadoop.ipc.HBaseServer: IPC Server handler 7 on 55260, call next(-4250070597157694417, 10000) from 192.168.1.90:54011: error: java.io.IOException: java.lang.NullPointerException
> java.io.IOException: java.lang.NullPointerException
> at org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:869)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:859)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.next(HRegionServer.java:1965)
> at sun.reflect.GeneratedMethodAccessor13.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$Server.call(HBaseRPC.java:648)
> at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:915)
> Caused by: java.lang.NullPointerException
> at org.apache.hadoop.hbase.KeyValue$KVComparator.compare(KeyValue.java:1310)
> at org.apache.hadoop.hbase.regionserver.KeyValueHeap$KVScannerComparator.compare(KeyValueHeap.java:136)
> at org.apache.hadoop.hbase.regionserver.KeyValueHeap$KVScannerComparator.compare(KeyValueHeap.java:127)
> at org.apache.hadoop.hbase.regionserver.KeyValueHeap$KVScannerComparator.compare(KeyValueHeap.java:117)
> at java.util.PriorityQueue.siftDownUsingComparator(PriorityQueue.java:641)
> at java.util.PriorityQueue.siftDown(PriorityQueue.java:612)
> at java.util.PriorityQueue.poll(PriorityQueue.java:523)
> at org.apache.hadoop.hbase.regionserver.KeyValueHeap.next(KeyValueHeap.java:113)
> at org.apache.hadoop.hbase.regionserver.HRegion$RegionScanner.nextInternal(HRegion.java:1776)
> at org.apache.hadoop.hbase.regionserver.HRegion$RegionScanner.next(HRegion.java:1719)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.next(HRegionServer.java:1944)
> ... 5 more
> 2009-12-29 18:05:55,447 WARN org.apache.hadoop.ipc.HBaseServer: IPC Server Responder, call next(-4250070597157694417, 10000) from 192.168.1.90:54011: output error
> 2009-12-29 18:05:55,448 INFO org.apache.hadoop.ipc.HBaseServer: IPC Server handler 7 on 55260 caught: java.nio.channels.ClosedChannelException
> at sun.nio.ch.SocketChannelImpl.ensureWriteOpen(SocketChannelImpl.java:126)
> at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:324)
> at org.apache.hadoop.hbase.ipc.HBaseServer.channelWrite(HBaseServer.java:1125)
> at org.apache.hadoop.hbase.ipc.HBaseServer$Responder.processResponse(HBaseServer.java:615)
> at org.apache.hadoop.hbase.ipc.HBaseServer$Responder.doRespond(HBaseServer.java:679)
> at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:943)
> 2009-12-29 18:05:56,322 INFO org.apache.hadoop.ipc.HBaseServer: Stopping server on 55260
> 2009-12-29 18:05:56,322 INFO org.apache.hadoop.ipc.HBaseServer: Stopping IPC Server listener on 55260
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