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https://issues.apache.org/jira/browse/TEZ-2437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14540421#comment-14540421
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Prakash Ramachandran commented on TEZ-2437:
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forgot to add. the reason why the framework client is reused and not created on
a per dagclient instance could be that the dagclient::close is never called. so
even if the resources for the LocalClient can be ref counted it is possible
that it would leak.
> 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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