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From "Ganelin, Ilya" <Ilya.Gane...@capitalone.com>
Subject Re: Failure while writing flushing HDHT
Date Tue, 08 Mar 2016 20:34:52 GMT
The only other failure we see appears to be a subsequent failure:

Caused by: java.io.FileNotFoundException: File does not exist: /PATH_OMITTED/hdht/62/62/62/0/0-0
	at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:66)
	at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:56)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsUpdateTimes(FSNamesystem.java:1932)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsInt(FSNamesystem.java:1873)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1853)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1825)
	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:565)
	at org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.getBlockLocations(AuthorizationProviderProxyClientProtocol.java:87)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:363)
	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1060)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2086)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2082)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1671)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2080)
​
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:106)
	at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:73)
	at org.apache.hadoop.hdfs.DFSClient.callGetBlockLocations(DFSClient.java:1260)
	at org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:1245)
	at org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:1233)
	at org.apache.hadoop.hdfs.DFSInputStream.fetchLocatedBlocksAndGetLastBlockLength(DFSInputStream.java:302)
	at org.apache.hadoop.hdfs.DFSInputStream.openInfo(DFSInputStream.java:268)
	at org.apache.hadoop.hdfs.DFSInputStream.<init>(DFSInputStream.java:260)
	at org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:1564)
	at org.apache.hadoop.hdfs.DistributedFileSystem$3.doCall(DistributedFileSystem.java:308)
	at org.apache.hadoop.hdfs.DistributedFileSystem$3.doCall(DistributedFileSystem.java:304)
	at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
	at org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:304)
	at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:775)
	at com.datatorrent.contrib.hdht.HDHTFileAccessFSImpl.getInputStream(p:236)
	at com.datatorrent.contrib.hdht.tfile.TFileImpl$DTFileImpl.getReader(m:39)
	at com.datatorrent.contrib.hdht.HDHTWriter.E(v:406)
	at com.datatorrent.contrib.hdht.HDHTWriter.E(v:201)
	at com.datatorrent.contrib.hdht.HDHTWriter$1.run(v:357)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)







On 3/8/16, 11:27 AM, "Pramod Immaneni" <pramod@datatorrent.com> wrote:

>Ilya,
>
>Are there any other exceptions from HDFS that you see in the logs around
>this exception?
>
>Thanks
>
>On Tue, Mar 8, 2016 at 11:25 AM, Ganelin, Ilya <Ilya.Ganelin@capitalone.com>
>wrote:
>
>> Hi all – we are seeing the following error when running our DAG. Would
>> really appreciate any insight as to why this is happening. Is HDFS full? Is
>> this a serialization failure? Any way to track down what is going on?
>>
>>
>> Stopped running due to an exception. java.lang.RuntimeException: Error
>> while flushing write cache.
>>
>>         at com.datatorrent.contrib.hdht.HDHTWriter.committed(v:549)
>>
>>         at
>> com.datatorrent.stram.engine.StreamingContainer$1.execute(StreamingContainer.java:765)
>>
>>         at com.datatorrent.stram.engine.Node.handleRequests(Node.java:353)
>>
>>         at
>> com.datatorrent.stram.engine.GenericNode.processEndWindow(GenericNode.java:171)
>>
>>         at
>> com.datatorrent.stram.engine.OiONode$ControlSink.put(OiONode.java:86)
>>
>>         at
>> com.datatorrent.stram.engine.OiONode$ControlSink.put(OiONode.java:54)
>>
>>         at com.datatorrent.stram.stream.OiOStream.put(OiOStream.java:67)
>>
>>         at com.datatorrent.stram.stream.MuxStream.put(MuxStream.java:120)
>>
>>         at
>> com.datatorrent.stram.engine.GenericNode.processEndWindow(GenericNode.java:150)
>>
>>         at
>> com.datatorrent.stram.engine.GenericNode.run(GenericNode.java:307)
>>
>>         at
>> com.datatorrent.stram.engine.StreamingContainer$2.run(StreamingContainer.java:1380)
>> ________________________________________________________
>>
>> The information contained in this e-mail is confidential and/or
>> proprietary to Capital One and/or its affiliates and may only be used
>> solely in performance of work or services for Capital One. The information
>> transmitted herewith is intended only for use by the individual or entity
>> to which it is addressed. If the reader of this message is not the intended
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>> delete the material from your computer.
>>
________________________________________________________

The information contained in this e-mail is confidential and/or proprietary to Capital One
and/or its affiliates and may only be used solely in performance of work or services for Capital
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to which it is addressed. If the reader of this message is not the intended recipient, you
are hereby notified that any review, retransmission, dissemination, distribution, copying
or other use of, or taking of any action in reliance upon this information is strictly prohibited.
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