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From "Siddharth Seth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TEZ-327) AM failed to start due to an error starting the DAGClientServer
Date Thu, 01 Aug 2013 17:19:51 GMT

    [ https://issues.apache.org/jira/browse/TEZ-327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13726629#comment-13726629
] 

Siddharth Seth commented on TEZ-327:
------------------------------------

Looks like we don't need to fix anything, other than upgrading to JDK 7. Leaving the issue
open till we do that, and setting a label.
                
> AM failed to start due to an error starting the DAGClientServer
> ---------------------------------------------------------------
>
>                 Key: TEZ-327
>                 URL: https://issues.apache.org/jira/browse/TEZ-327
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Siddharth Seth
>            Priority: Critical
>              Labels: TEZ-0.2.0
>         Attachments: syslog
>
>
> Stack trace. Will upload the entire AM log as well.
> {code}
> 2013-07-30 13:32:08,542 ERROR [ServiceThread:DAGClientRPCServer] org.apache.tez.dag.api.client.DAGClientServer:
Failed to start DAGClientServer:
> java.lang.NullPointerException
>   at sun.nio.ch.Util.atBugLevel(Util.java:448)
>   at sun.nio.ch.SelectorImpl.<init>(SelectorImpl.java:40)
>   at sun.nio.ch.KQueueSelectorImpl.<init>(KQueueSelectorImpl.java:46)
>   at sun.nio.ch.KQueueSelectorProvider.openSelector(KQueueSelectorProvider.java:20)
>   at java.nio.channels.Selector.open(Selector.java:209)
>   at org.apache.hadoop.ipc.Server$Listener.<init>(Server.java:539)
>   at org.apache.hadoop.ipc.Server.<init>(Server.java:2197)
>   at org.apache.hadoop.ipc.RPC$Server.<init>(RPC.java:901)
>   at org.apache.hadoop.ipc.ProtobufRpcEngine$Server.<init>(ProtobufRpcEngine.java:505)
>   at org.apache.hadoop.ipc.ProtobufRpcEngine.getServer(ProtobufRpcEngine.java:480)
>   at org.apache.hadoop.ipc.RPC$Builder.build(RPC.java:746)
>   at org.apache.tez.dag.api.client.DAGClientServer.createServer(DAGClientServer.java:97)
>   at org.apache.tez.dag.api.client.DAGClientServer.serviceStart(DAGClientServer.java:71)
>   at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
>   at org.apache.tez.dag.app.DAGAppMaster$ServiceWithDependency.start(DAGAppMaster.java:924)
>   at org.apache.tez.dag.app.DAGAppMaster$ServiceThread.run(DAGAppMaster.java:942)
> 2013-07-30 13:32:08,542 DEBUG [ServiceThread:DAGClientRPCServer] org.apache.hadoop.service.AbstractService:
noteFailure org.apache.tez.dag.api.TezUncheckedException: java.lang.NullPointerException
> 2013-07-30 13:32:08,542 INFO [ServiceThread:DAGClientRPCServer] org.apache.hadoop.service.AbstractService:
Service DAGClientRPCServer failed in state STARTED; cause: org.apache.tez.dag.api.TezUncheckedExc
> org.apache.tez.dag.api.TezUncheckedException: java.lang.NullPointerException
>   at org.apache.tez.dag.api.client.DAGClientServer.serviceStart(DAGClientServer.java:78)
>   at org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
>   at org.apache.tez.dag.app.DAGAppMaster$ServiceWithDependency.start(DAGAppMaster.java:924)
>   at org.apache.tez.dag.app.DAGAppMaster$ServiceThread.run(DAGAppMaster.java:942)
> Caused by: java.lang.NullPointerException
>   at sun.nio.ch.Util.atBugLevel(Util.java:448)
>   at sun.nio.ch.SelectorImpl.<init>(SelectorImpl.java:40)
>   at sun.nio.ch.KQueueSelectorImpl.<init>(KQueueSelectorImpl.java:46)
>   at sun.nio.ch.KQueueSelectorProvider.openSelector(KQueueSelectorProvider.java:20)
>   at java.nio.channels.Selector.open(Selector.java:209)
>   at org.apache.hadoop.ipc.Server$Listener.<init>(Server.java:539)
>   at org.apache.hadoop.ipc.Server.<init>(Server.java:2197)
>   at org.apache.hadoop.ipc.RPC$Server.<init>(RPC.java:901)
>   at org.apache.hadoop.ipc.ProtobufRpcEngine$Server.<init>(ProtobufRpcEngine.java:505)
>   at org.apache.hadoop.ipc.ProtobufRpcEngine.getServer(ProtobufRpcEngine.java:480)
>   at org.apache.hadoop.ipc.RPC$Builder.build(RPC.java:746)
>   at org.apache.tez.dag.api.client.DAGClientServer.createServer(DAGClientServer.java:97)
>   at org.apache.tez.dag.api.client.DAGClientServer.serviceStart(DAGClientServer.java:71)
>   ... 3 more
> {code}

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