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Posted to hdfs-dev@hadoop.apache.org by "Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org> on 2009/08/17 23:53:14 UTC
[jira] Resolved: (HDFS-167) DFSClient continues to retry
indefinitely
[ https://issues.apache.org/jira/browse/HDFS-167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tsz Wo (Nicholas), SZE resolved HDFS-167.
-----------------------------------------
Resolution: Fixed
Fix Version/s: 0.20.1
I have committed this to 0.20. Will also commit HDFS-527 to 0.20.
> DFSClient continues to retry indefinitely
> -----------------------------------------
>
> Key: HDFS-167
> URL: https://issues.apache.org/jira/browse/HDFS-167
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs client
> Reporter: Derek Wollenstein
> Assignee: Bill Zeller
> Priority: Minor
> Fix For: 0.20.1, 0.21.0
>
> Attachments: hdfs-167-4.patch, hdfs-167-5.patch, hdfs-167-6.patch, hdfs-167-for-20-1.patch
>
>
> I encountered a bug when trying to upload data using the Hadoop DFS Client.
> After receiving a NotReplicatedYetException, the DFSClient will normally retry its upload up to some limited number of times. In this case, I found that this retry loop continued indefinitely, to the point that the number of tries remaining was negative:
> 2009-03-25 16:20:02 [INFO]
> 2009-03-25 16:20:02 [INFO] 09/03/25 16:20:02 INFO hdfs.DFSClient: Waiting for replication for 21 seconds
> 2009-03-25 16:20:03 [INFO] 09/03/25 16:20:02 WARN hdfs.DFSClient: NotReplicatedYetException sleeping /apollo/env/SummaryMySQL/var/logstore/fiorello_logs_2009
> 0325_us/logs_20090325_us_13 retries left -1
> The stack trace for the failure that's retrying is:
> 2009-03-25 16:20:02 [INFO] 09/03/25 16:20:02 INFO hdfs.DFSClient: org.apache.hadoop.ipc.RemoteException: org.apache.hadoop.hdfs.server.namenode.NotReplicated
> YetException: Not replicated yet:<filename>
> 2009-03-25 16:20:02 [INFO] at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1266)
> 2009-03-25 16:20:02 [INFO] at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:351)
> 2009-03-25 16:20:02 [INFO] at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source)
> 2009-03-25 16:20:02 [INFO] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 2009-03-25 16:20:02 [INFO] at java.lang.reflect.Method.invoke(Method.java:597)
> 2009-03-25 16:20:02 [INFO] at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:481)
> 2009-03-25 16:20:02 [INFO] at org.apache.hadoop.ipc.Server$Handler.run(Server.java:894)
> 2009-03-25 16:20:02 [INFO]
> 2009-03-25 16:20:02 [INFO] at org.apache.hadoop.ipc.Client.call(Client.java:697)
> 2009-03-25 16:20:02 [INFO] at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:216)
> 2009-03-25 16:20:02 [INFO] at $Proxy0.addBlock(Unknown Source)
> 2009-03-25 16:20:02 [INFO] at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
> 2009-03-25 16:20:02 [INFO] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 2009-03-25 16:20:02 [INFO] at java.lang.reflect.Method.invoke(Method.java:597)
> 2009-03-25 16:20:02 [INFO] at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
> 2009-03-25 16:20:02 [INFO] at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
> 2009-03-25 16:20:02 [INFO] at $Proxy0.addBlock(Unknown Source)
> 2009-03-25 16:20:02 [INFO] at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.locateFollowingBlock(DFSClient.java:2814)
> 2009-03-25 16:20:02 [INFO] at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.nextBlockOutputStream(DFSClient.java:2696)
> 2009-03-25 16:20:02 [INFO] at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.access$2000(DFSClient.java:1996)
> 2009-03-25 16:20:02 [INFO] at org.apache.hadoop.hdfs.DFSClient$DFSOutputStream$DataStreamer.run(DFSClient.java:2183)
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