[jira] Commented: (HADOOP-5584) DFSClient continues to retry indefinitely

["dhruba borthakur (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-5584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12695827#action_12695827 ] 

dhruba borthakur commented on HADOOP-5584:
------------------------------------------

The are potions of the client code that retries indefinitely. Especially when the file is closed. II agree completely that this portion of the client code should be changed to retry  for a large finite amount of time.

> DFSClient continues to retry indefinitely
> -----------------------------------------
>
>                 Key: HADOOP-5584
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5584
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.19.1
>            Reporter: Derek Wollenstein
>            Priority: Minor
>
> 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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