DistributedLogSplitter interrupt can be hazardous to regionserver health
------------------------------------------------------------------------
Key: HBASE-5079
URL: https://issues.apache.org/jira/browse/HBASE-5079
Project: HBase
Issue Type: Bug
Reporter: stack
The DLS interrupt can kill the regionserver if happens while conversation w/
namenode is going on.
The interrupt is used to end a task on regionserver when done whether
successful or to interrupt an ongoing split since assumed by another server.
I saw this issue testing because I was killing servers. I also was suffering
"HBASE-5078 DistributedLogSplitter failing to split file because it has edits
for lots of regions" which made it more likely to happen.
Here is what it looks like on the regionserver that died:
{code}
2011-12-20 17:54:58,009 INFO
org.apache.hadoop.hbase.regionserver.SplitLogWorker: task
/hbase/splitlog/hdfs%3A%2F%2Fsv4r11s38%3A7000%2Fhbase%2F.logs%2Fsv4r31s44%2C7003%2C1324365396770-splitting%2Fsv4r31s44%252C7003%252C1324365396770.1324403495463
preempted from sv4r13s38,7003,1324365396583, current task state and
owner=owned sv4r27s44,7003,1324365396664
2011-12-20 17:54:58,009 INFO
org.apache.hadoop.hbase.regionserver.SplitLogWorker: Sending interrupt to stop
the worker thread
2011-12-20 17:54:59,133 INFO
org.apache.hadoop.hbase.regionserver.SplitLogWorker: task
/hbase/splitlog/hdfs%3A%2F%2Fsv4r11s38%3A7000%2Fhbase%2F.logs%2Fsv4r31s44%2C7003%2C1324365396770-splitting%2Fsv4r31s44%252C7003%252C1324365396770.1324403495463
preempted from sv4r13s38,7003,1324365396583, current task state and
owner=owned sv4r27s44,7003,1324365396664
2011-12-20 17:54:59,134 INFO
org.apache.hadoop.hbase.regionserver.SplitLogWorker: Sending interrupt to stop
the worker thread
...
2011-12-20 17:55:25,505 INFO
org.apache.hadoop.hbase.regionserver.SplitLogWorker: task
/hbase/splitlog/hdfs%3A%2F%2Fsv4r11s38%3A7000%2Fhbase%2F.logs%2Fsv4r31s44%2C7003%2C1324365396770-splitting%2Fsv4r31s44%252C7003%252C1324365396770.1324403495463
preempted from sv4r13s38,7003,1324365396583, current task state and
owner=unassigned sv4r11s38,7001,1324365395047
2011-12-20 17:55:25,505 INFO
org.apache.hadoop.hbase.regionserver.SplitLogWorker: Sending interrupt to stop
the worker thread
{code}
Three interrupts are sent over period of 31 seconds or so.
Eventually the interrupt has an effect and I get:
{code}
2011-12-20 17:55:25,505 INFO
org.apache.hadoop.hbase.regionserver.SplitLogWorker: Sending interrupt to stop
the worker thread
2011-12-20 17:55:48,022 DEBUG org.apache.hadoop.hbase.regionserver.LogRoller:
HLog roll requested
2011-12-20 17:55:58,070 WARN org.apache.hadoop.hdfs.DFSClient: DataStreamer
Exception: java.io.IOException: Call to sv4r11s38/10.4.11.38:7000 failed on
local exception: java.nio.channels.ClosedByInterruptException
at org.apache.hadoop.ipc.Client.wrapException(Client.java:1103)
at org.apache.hadoop.ipc.Client.call(Client.java:1071)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
at $Proxy9.addBlock(Unknown Source)
at sun.reflect.GeneratedMethodAccessor37.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
at $Proxy9.addBlock(Unknown Source)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3507)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:3370)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2700(DFSClient.java:2586)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2826)
Caused by: java.nio.channels.ClosedByInterruptException
at
java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:184)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:341)
at
org.apache.hadoop.net.SocketOutputStream$Writer.performIO(SocketOutputStream.java:55)
at
org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:142)
at
org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:146)
at
org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:107)
at
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
at java.io.DataOutputStream.flush(DataOutputStream.java:106)
at org.apache.hadoop.ipc.Client$Connection.sendParam(Client.java:779)
at org.apache.hadoop.ipc.Client.call(Client.java:1047)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
at $Proxy9.getFileInfo(Unknown Source)
at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
at $Proxy9.getFileInfo(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:875)
at
org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:513)
at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:768)
at
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter.convertRegionEditsToTemp(HLogSplitter.java:1097)
at
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter.createWAP(HLogSplitter.java:1066)
at
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter.convertRegionEditsToTemp(HLogSplitter.java:1097)
at
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter.createWAP(HLogSplitter.java:1066)
at
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter.splitLogFileToTemp(HLogSplitter.java:410)
at
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter.splitLogFileToTemp(HLogSplitter.java:351)
at
org.apache.hadoop.hbase.regionserver.SplitLogWorker$1.exec(SplitLogWorker.java:113)
at
org.apache.hadoop.hbase.regionserver.SplitLogWorker.grabTask(SplitLogWorker.java:266)
at
org.apache.hadoop.hbase.regionserver.SplitLogWorker.taskLoop(SplitLogWorker.java:197)
at
org.apache.hadoop.hbase.regionserver.SplitLogWorker.run(SplitLogWorker.java:165)
at java.lang.Thread.run(Thread.java:662)
2011-12-20 17:55:58,070 WARN
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter: Could not prepare temp
staging area
java.io.IOException: Call to sv4r11s38/10.4.11.38:7000 failed on local
exception: java.nio.channels.ClosedByInterruptException
at org.apache.hadoop.ipc.Client.wrapException(Client.java:1103)
at org.apache.hadoop.ipc.Client.call(Client.java:1071)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
at $Proxy9.getFileInfo(Unknown Source)
at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
at $Proxy9.getFileInfo(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:875)
at
org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:513)
at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:768)
at
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter.convertRegionEditsToTemp(HLogSplitter.java:1097)
at
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter.createWAP(HLogSplitter.java:1066)
at
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter.splitLogFileToTemp(HLogSplitter.java:410)
at
org.apache.hadoop.hbase.regionserver.wal.HLogSplitter.splitLogFileToTemp(HLogSplitter.java:351)
at
org.apache.hadoop.hbase.regionserver.SplitLogWorker$1.exec(SplitLogWorker.java:113)
at
org.apache.hadoop.hbase.regionserver.SplitLogWorker.grabTask(SplitLogWorker.java:266)
at
org.apache.hadoop.hbase.regionserver.SplitLogWorker.taskLoop(SplitLogWorker.java:197)
at
org.apache.hadoop.hbase.regionserver.SplitLogWorker.run(SplitLogWorker.java:165)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.nio.channels.ClosedByInterruptException
at
java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:184)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:341)
at
org.apache.hadoop.net.SocketOutputStream$Writer.performIO(SocketOutputStream.java:55)
at
org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:142)
at
org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:146)
at
org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:107)
at
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
at java.io.DataOutputStream.flush(DataOutputStream.java:106)
at org.apache.hadoop.ipc.Client$Connection.sendParam(Client.java:779)
at org.apache.hadoop.ipc.Client.call(Client.java:1047)
... 20 more
{code}
Now here is the wacky part. Above we are trying to go to the namenode it looks
like and the interrupt is closing socket. At same, time, I'm trying to flush
and it fails with same stack trace ... and because we failed a flush,
regionserver goes down:
{code}
2011-12-20 17:55:58,071 WARN org.apache.hadoop.hdfs.DFSClient: Error Recovery
for block blk_-6239131583587622790_187561 bad datanode[0] nodes == null
2011-12-20 17:55:58,073 WARN org.apache.hadoop.hdfs.DFSClient: Could not get
block locations. Source file
"/hbase/TestTable/9f98e6764d322832c845b740336e5750/.tmp/0df1673c96274028bda24c9cb49e9c3e"
- Aborting...
2011-12-20 17:55:58,074 FATAL
org.apache.hadoop.hbase.regionserver.HRegionServer: ABORTING region server
sv4r13s38,7003,1324365396583: Replay of HLog required. Forcing server shutdown
org.apache.hadoop.hbase.DroppedSnapshotException: region:
TestTable,0134394898,1323822783216.9f98e6764d322832c845b740336e5750.
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:1276)
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:1160)
at
org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:1102)
at
org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:400)
at
org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:374)
at
org.apache.hadoop.hbase.regionserver.MemStoreFlusher.run(MemStoreFlusher.java:243)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.IOException: Call to sv4r11s38/10.4.11.38:7000 failed on
local exception: java.nio.channels.ClosedByInterruptException
at org.apache.hadoop.ipc.Client.wrapException(Client.java:1103)
at org.apache.hadoop.ipc.Client.call(Client.java:1071)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
at $Proxy9.addBlock(Unknown Source)
at sun.reflect.GeneratedMethodAccessor37.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
at $Proxy9.addBlock(Unknown Source)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:3507)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:3370)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2700(DFSClient.java:2586)
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2826)
Caused by: java.nio.channels.ClosedByInterruptException
at
java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:184)
at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:341)
at
org.apache.hadoop.net.SocketOutputStream$Writer.performIO(SocketOutputStream.java:55)
at
org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:142)
at
org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:146)
at
org.apache.hadoop.net.SocketOutputStream.write(SocketOutputStream.java:107)
at
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:123)
at java.io.DataOutputStream.flush(DataOutputStream.java:106)
at org.apache.hadoop.ipc.Client$Connection.sendParam(Client.java:779)
at org.apache.hadoop.ipc.Client.call(Client.java:1047)
at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
at $Proxy9.getFileInfo(Unknown Source)
at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
at $Proxy9.getFileInfo(Unknown Source)
...
{code}
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