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https://issues.apache.org/jira/browse/TEZ-2437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14541636#comment-14541636
]
Jeff Zhang edited comment on TEZ-2437 at 5/13/15 9:16 AM:
----------------------------------------------------------
[~pramachandran] [~tiwari] I think the simple solution is don't set
DAGAppMaster as null so that we can still get the ApplicationReport in local
mode after AM is shutdown just like we can get the ApplicationReport in
non-local mode. Thoughts ? This can make the local/non-local model's behavior
consistent as [~hitesh] [~bikassaha] mentioned.
{code}
if (dagAppMaster != null) {
dagAppMaster.stop();
dagAppMaster = null; // remove this line
}
{code}
was (Author: zjffdu):
[~pramachandran] [~tiwari] I think the simple solution is don't set
DAGAppMaster as null so that we can still get the ApplicationReport in local
mode after AM is shutdown just like we can get the ApplicationReport in
non-local mode. This can make the local/non-local model's behavior consistent
as [~hitesh] [~bikassaha] mentioned.
{code}
if (dagAppMaster != null) {
dagAppMaster.stop();
dagAppMaster = null; // remove this line
}
{code}
> FilterLinesByWord NPEs when run in Localmode
> --------------------------------------------
>
> Key: TEZ-2437
> URL: https://issues.apache.org/jira/browse/TEZ-2437
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.6.0
> Environment: Tez Localmode only
> Reporter: Amit Tiwari
> Attachments: TEZ-2437.patch, TEZ-2437.patch
>
>
> Subsequent to Tez-1969 [https://issues.apache.org/jira/browse/TEZ-1969] I've
> noticed that org.apache.tez.mapreduce.examples.FilterLinesByWord.java NPEs
> with this stack trace, when run on Localmode:
> at
> org.apache.tez.client.LocalClient.getApplicationReport(LocalClient.java:145)
> at
> org.apache.tez.dag.api.client.rpc.DAGClientRPCImpl.getAppReport(DAGClientRPCImpl.java:213)
> at
> org.apache.tez.dag.api.client.rpc.DAGClientRPCImpl.createAMProxyIfNeeded(DAGClientRPCImpl.java:230)
> at
> org.apache.tez.dag.api.client.rpc.DAGClientRPCImpl.getVertexStatus(DAGClientRPCImpl.java:102)
> at
> org.apache.tez.dag.api.client.DAGClientImpl.getVertexStatusViaAM(DAGClientImpl.java:257)
> at
> org.apache.tez.dag.api.client.DAGClientImpl.getVertexStatus(DAGClientImpl.java:166)
> at
> org.apache.tez.mapreduce.examples.ExampleDriver.printDAGStatus(ExampleDriver.java:122)
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