NullPointException 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
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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