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Posted to issues@tez.apache.org by "jiang jie (JIRA)" <ji...@apache.org> on 2013/07/31 05:27:47 UTC
[jira] [Comment Edited] (TEZ-327) AM failed to start due to an
error starting the DAGClientServer
[ https://issues.apache.org/jira/browse/TEZ-327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13724797#comment-13724797 ]
jiang jie edited comment on TEZ-327 at 7/31/13 3:26 AM:
--------------------------------------------------------
This looks like a JDK bug , Could be related to http://bugs.sun.com/view_bug.do?bug_id=6427854
@Siddharth , what JDK are you using? we can look into the sdk source code "sun.nio.ch.Util.atBugLevel(Util.java:448) " to ensure it.
if so, we can add -Dsun.nio.ch.bugLevel="" in AM's java opts to avoid the NPE .
was (Author: zeustencent):
This looks like a JDK bug , Could be related to http://bugs.sun.com/view_bug.do?bug_id=6427854
@Siddharth , what JDK are you using? we can look into the sdk source code "sun.nio.ch.Util.atBugLevel(Util.java:448) " to ensure it.
if so, we can add -Dsun.nio.ch.bugLevel="" in our scripts to avoid the NPE .
> 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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