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From Jeff Lord <jl...@cloudera.com>
Subject Re: HDFS Sink stops writing events because HDFSWriter failed to append and close a file
Date Tue, 28 May 2013 21:38:14 GMT
Hi Ashish,

What version of flume are you running?

flume-ng version

-Jeff


On Fri, May 24, 2013 at 3:38 AM, Ashish Tadose
<ashish.tadose@pubmatic.com>wrote:

>  Hi All,
>
> We are facing this issue in production flume setup.
>
> Issue initiates when HDFS sink BucketWriter fails to append a batch for a
> file because of hadoop datanode issue.
> Then it tries to close that file but even close() file throws a exception
> and HDFS sink does not remove that bucketwriter instance. [Cause may be no.
> of bucketwriter instances are below *maxOpenFiles*].
>
> Whats creating more problem is that HDFS sink is not letting go off that
> bucketwriter instance and keeps trying to append/close to that file
> infinitely which cause it to disrupt the event processing towards to HDFS.
>
> *Logs from flume agent **
> *
> 2013-05-20 02:32:40,669 (ResponseProcessor for block
> blk_8857674139042547711_2143611) [WARN -
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$ResponseProcessor.run(DFSClient.java:3015)]
> DFSOutputStream ResponseProcessor exception  for block
> blk_8857674139042547711_2143611java.net.SocketTimeoutException: 69000
> millis timeout while waiting for channel to be ready for read. ch :
> java.nio.channels.SocketChannel[connected local=/<datanode_ip>:41129
> remote=/<datanode2_ip>:60010]
>         at
> org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:164)
>         at
> org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:155)
>         at
> org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:128)
>         at java.io.DataInputStream.readFully(DataInputStream.java:178)
>         at java.io.DataInputStream.readLong(DataInputStream.java:399)
>         at
> org.apache.hadoop.hdfs.protocol.DataTransferProtocol$PipelineAck.readFields(DataTransferProtocol.java:124)
>         at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$ResponseProcessor.run(DFSClient.java:2967)
>
> 2013-05-20 02:32:56,321 (DataStreamer for file
> /flume/data/Flume_raw_1_.1368960029025.lzo.tmp block
> blk_8857674139042547711_2143611) [WARN -
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:3051)]
> *Error Recovery for block blk_8857674139042547711_2143611 bad datanode[0]
> <datanode2_ip>:60010*
> 2013-05-20 02:32:56,322 (DataStreamer for file
> /flume/data/Flume_raw_1_.1368960029025.lzo.tmp block
> blk_8857674139042547711_2143611) [WARN -
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:3102)]
> Error Recovery for block blk_8857674139042547711_2143611 in pipeline
> <datanode2_ip>:60010, <datanode3_ip>:60010, <datanode4_ip>:60010: bad
> datanode <datanode2_ip>:60010
> 2013-05-20 02:32:56,538 (Log-BackgroundWorker-fileChannel) [INFO -
> org.apache.flume.channel.file.EventQueueBackingStoreFile.checkpoint(EventQueueBackingStoreFile.java:109)]
> Start checkpoint for /home/flume/flume_channel/checkpointDir15/checkpoint,
> elements to sync = 42000
> 2013-05-20 02:32:56,634 (Log-BackgroundWorker-fileChannel) [INFO -
> org.apache.flume.channel.file.EventQueueBackingStoreFile.checkpoint(EventQueueBackingStoreFile.java:117)]
> Updating checkpoint metadata: logWriteOrderID: 1370969225649, queueSize:
> 140156, queueHead: 72872626
> 2013-05-20 02:32:56,722 (Log-BackgroundWorker-fileChannel) [INFO -
> org.apache.flume.channel.file.LogFileV3$MetaDataWriter.markCheckpoint(LogFileV3.java:85)]
> Updating log-543.meta currentPosition = 743847065, logWriteOrderID =
> 1370969225649
> 2013-05-20 02:32:56,759 (Log-BackgroundWorker-fileChannel) [INFO -
> org.apache.flume.channel.file.Log.writeCheckpoint(Log.java:886)] Updated
> checkpoint for file: /home/flume/flume_channel/dataDir15/log-543 position:
> 743847065 logWriteOrderID: 1370969225649
> 2013-05-20 02:33:56,331 (DataStreamer for file
> /flume/data/Flume_raw_1_.1368960029025.lzo.tmp block
> blk_8857674139042547711_2143611) [WARN -
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:3123)]
> Failed recovery attempt #0 from primary datanode <datanode3_ip>:60010
> java.net.SocketTimeoutException: Call to /<datanode3_ip>:60021 failed on
> socket timeout exception: java.net.SocketTimeoutException: 60000 millis
> timeout while waiting for channel to be ready for read. ch :
> java.nio.channels.SocketChannel[connected local=/<datanode_ip>:41526
> remote=/<datanode3_ip>:60021]
> ..
> ..
> ..
> 2013-05-20 02:36:00,249 (DataStreamer for file
> /flume/data/Flume_raw_1_.1368960029025.lzo.tmp block
> blk_8857674139042547711_2143611) [WARN -
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:3123)]
> Failed recovery attempt #0 from primary datanode <datanode2_ip>:60010
> org.apache.hadoop.ipc.RemoteException:
> org.apache.hadoop.ipc.RemoteException: java.io.IOException:
> blk_8857674139042547711_2143611 is already commited, storedBlock == null.
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.nextGenerationStampForBlock(FSNamesystem.java:5388)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.nextGenerationStamp(NameNode.java:748)
>         at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:563)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1388)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1384)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:396)
>         at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1382)
>
>         at org.apache.hadoop.ipc.Client.call(Client.java:1070)
>         at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
>         at $Proxy5.nextGenerationStamp(Unknown Source)
>         at
> org.apache.hadoop.hdfs.server.datanode.DataNode.syncBlock(DataNode.java:1999)
>         at
> org.apache.hadoop.hdfs.server.datanode.DataNode.recoverBlock(DataNode.java:1967)
>         at
> org.apache.hadoop.hdfs.server.datanode.DataNode.recoverBlock(DataNode.java:2047)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:563)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1388)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1384)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:396)
>         at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
> 2013-05-20 02:36:00,249 (DataStreamer for file
> /flume/data/Flume_raw_1_.1368960029025.lzo.tmp block
> blk_8857674139042547711_2143611) [WARN -
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:3123)]
> Failed recovery attempt #0 from primary datanode <datanode2_ip>:60010
> org.apache.hadoop.ipc.RemoteException:
> org.apache.hadoop.ipc.RemoteException: java.io.IOException:
> blk_8857674139042547711_2143611 is already commited, storedBlock == null.
>         at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.nextGenerationStampForBlock(FSNamesystem.java:5388)
>         at
> org.apache.hadoop.hdfs.server.namenode.NameNode.nextGenerationStamp(NameNode.java:748)
>         at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:563)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1388)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1384)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:396)
>         at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
>         at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1382)
>
>         at org.apache.hadoop.ipc.Client.call(Client.java:1070)
>         at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
>         at $Proxy5.nextGenerationStamp(Unknown Source)
>         at
> org.apache.hadoop.hdfs.server.datanode.DataNode.syncBlock(DataNode.java:1999)
>         at
> org.apache.hadoop.hdfs.server.datanode.DataNode.recoverBlock(DataNode.java:1967)
>         at
> org.apache.hadoop.hdfs.server.datanode.DataNode.recoverBlock(DataNode.java:2047)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at java.lang.reflect.Method.invoke(Method.java:597)
>         at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:563)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1388)
>         at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1384)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:396)
>         at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
>        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1382)
>
>         at org.apache.hadoop.ipc.Client.call(Client.java:1070)
>         at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)
>         at $Proxy7.recoverBlock(Unknown Source)
>         at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:3121)
>         at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2100(DFSClient.java:2589)
>         at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2793)
> 2013-05-20 02:36:00,249 (DataStreamer for file
> /flume/data/Flume_raw_1_.1368960029025.lzo.tmp block
> blk_8857674139042547711_2143611) [WARN -
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.processDatanodeError(DFSClient.java:3162)]
> Error Recovery for block blk_8857674139042547711_2143611 failed  because
> recovery from primary datanode <datanode2_ip>:60010 failed 1 times.
> Pipeline was <datanode2_ip>:60010. Will retry...
> ..
> ..
> ..
> 2013-05-20 02:36:16,933 (hdfs-hdfsSink1-call-runner-8) [WARN -
> org.apache.flume.sink.hdfs.BucketWriter.*append*(BucketWriter.java:378)]
> Caught IOException writing to HDFSWriter (write beyond end of stream). *Closing
> file
> (hdfs://<namenode_ip>:64310/flume/data/Flume_raw_1_.1368960029025.lzo.tmp)
> and rethrowing exception.*
> 2013-05-20 02:36:16,934 (hdfs-hdfsSink1-call-runner-8) [WARN -
> org.apache.flume.sink.hdfs.BucketWriter.append(BucketWriter.java:384)]
> Caught IOException while closing file
> (hdfs://<namenode_ip>:64310/flume/data/Flume_raw_1_.1368960029025.lzo.tmp).
> *Exception follows.**
> **java.io.IOException: DFSOutputStream is closed*
>         at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.sync(DFSClient.java:3669)
>         at
> org.apache.hadoop.fs.FSDataOutputStream.sync(FSDataOutputStream.java:97)
>         at
> org.apache.flume.sink.hdfs.HDFSCompressedDataStream.sync(HDFSCompressedDataStream.java:96)
>         at
> org.apache.flume.sink.hdfs.BucketWriter.doFlush(BucketWriter.java:345)
>         at
> org.apache.flume.sink.hdfs.BucketWriter.access$500(BucketWriter.java:53)
>         at
> org.apache.flume.sink.hdfs.BucketWriter$4.run(BucketWriter.java:310)
>         at
> org.apache.flume.sink.hdfs.BucketWriter$4.run(BucketWriter.java:308)
>         at
> org.apache.flume.sink.hdfs.BucketWriter.runPrivileged(BucketWriter.java:143)
>         at
> org.apache.flume.sink.hdfs.BucketWriter.flush(BucketWriter.java:308)
>         at
> org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:257)
>         at
> org.apache.flume.sink.hdfs.BucketWriter.append(BucketWriter.java:382)
>         at
> org.apache.flume.sink.hdfs.HDFSEventSink$2.call(HDFSEventSink.java:729)
>         at
> org.apache.flume.sink.hdfs.HDFSEventSink$2.call(HDFSEventSink.java:727)
>         at
> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>         at java.util.concurrent.FutureTask.run(FutureTask.java:138)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>         at java.lang.Thread.run(Thread.java:662)
> 2013-05-20 02:36:16,934 (SinkRunner-PollingRunner-DefaultSinkProcessor)
> [WARN -
> org.apache.flume.sink.hdfs.HDFSEventSink.process(HDFSEventSink.java:456)]
> HDFS IO error
> java.io.IOException: write beyond end of stream
>         at
> com.hadoop.compression.lzo.LzopOutputStream.write(LzopOutputStream.java:127)
>         at java.io.OutputStream.write(OutputStream.java:58)
>         at
> org.apache.flume.sink.hdfs.HDFSCompressedDataStream.append(HDFSCompressedDataStream.java:81)
>         at
> org.apache.flume.sink.hdfs.BucketWriter.append(BucketWriter.java:376)
>         at
> org.apache.flume.sink.hdfs.HDFSEventSink$2.call(HDFSEventSink.java:729)
>         at
> org.apache.flume.sink.hdfs.HDFSEventSink$2.call(HDFSEventSink.java:727)
>         at
> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>         at java.lang.Thread.run(Thread.java:662)
> 2013-05-20 02:36:16,934 (SinkRunner-PollingRunner-DefaultSinkProcessor)
> [WARN -
> org.apache.flume.sink.hdfs.HDFSEventSink.process(HDFSEventSink.java:456)]*HDFS IO error
> **
> **java.io.IOException: write beyond end of stream*
>         at
> com.hadoop.compression.lzo.LzopOutputStream.write(LzopOutputStream.java:127)
>         at java.io.OutputStream.write(OutputStream.java:58)
>         at
> org.apache.flume.sink.hdfs.HDFSCompressedDataStream.append(HDFSCompressedDataStream.java:81)
>         at
> org.apache.flume.sink.hdfs.BucketWriter.append(BucketWriter.java:376)
>         at
> org.apache.flume.sink.hdfs.HDFSEventSink$2.call(HDFSEventSink.java:729)
>         at
> org.apache.flume.sink.hdfs.HDFSEventSink$2.call(HDFSEventSink.java:727)
>         at
> java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
>         at java.util.concurrent.FutureTask.run(FutureTask.java:138)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
>         at java.lang.Thread.run(Thread.java:662)
> 2013-05-20 02:36:20,988 (hdfs-hdfsSink1-call-runner-7) [WARN -
> org.apache.flume.sink.hdfs.BucketWriter.append(BucketWriter.java:378)]*Caught IOException
writing to HDFSWriter (Error Recovery for block
> blk_8857674139042547711_2143611 failed  because recovery from primary
> datanode <datanode2_ip>:60010 failed 6 times.  Pipeline was
> <datanode2_ip>:60010. Aborting...). Closing file
> (hdfs://<namenode_ip>:64310/flume/data/Flume_raw_1_.1368960029025.lzo.tmp)
> and rethrowing exception.*
> ..
> ..
> ..
> then it keep repeating these logs
> *
> **Flume agent HDFSsink properties*
>
> agent.sinks.hdfsSink1.type = hdfs
>
> agent.sinks.hdfsSink1.hdfs.path=hdfs://<namenode_ip>:64310/flume/tracker_data
> #agent.sinks.hdfsSink1.hdfs.fileType =DataStream
> agent.sinks.hdfsSink1.hdfs.fileType =CompressedStream
> agent.sinks.hdfsSink1.hdfs.filePrefix=Flume_raw_1_
> agent.sinks.hdfsSink1.hdfs.rollSize=0
> agent.sinks.hdfsSink1.hdfs.codeC=LZopCodec
> agent.sinks.hdfsSink1.hdfs.rollCount=0
> agent.sinks.hdfsSink1.hdfs.batchSize=5000
> agent.sinks.hdfsSink1.hdfs.rollInterval=60
> agent.sinks.hdfsSink1.channel= fileChannel
> agent.sinks.hdfsSink1.hdfs.callTimeout = 240000
> agent.sinks.hdfsSink1.hdfs.idleTimeout = 300
>
> Thanks,
> Ashish
>
>

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