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https://issues.apache.org/jira/browse/TEZ-2798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15049467#comment-15049467
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Bikas Saha commented on TEZ-2798:
---------------------------------
The tests need to rerun since it looks like the Jenkins run stopped after the
first test failure. Once the MockDAGAppMaster tests have rerun (or in your
local run), could you please double check that the output logs from the tests
dont have NPEs related to accessing external services.
The patch looks good to me.
bq. Didn't quite understand this, or the significance w.r.t this jira. The
state machines could always run independently
This was trying to explain why the other mock dag appmaster tests were passing
even though internally, the code was NPEing in the container launcher flow.
Since the container launcher was not in the execution state machine flow, the
tests continued to pass despite the NPEs.
> NPE when executing TestMemoryWithEvents::testMemoryScatterGather
> ----------------------------------------------------------------
>
> Key: TEZ-2798
> URL: https://issues.apache.org/jira/browse/TEZ-2798
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Rajesh Balamohan
> Assignee: Siddharth Seth
> Priority: Blocker
> Attachments: TEZ-2798.1.ignoredTemporarilyActivated.txt
>
>
> {noformat}
> 2015-09-10 05:07:45,885 ERROR [Dispatcher thread: Central]
> common.AsyncDispatcher (AsyncDispatcher.java:dispatch(188)) - Error in
> dispatcher thread
> java.lang.NullPointerException
> at
> org.apache.tez.dag.app.ContainerLauncherContextImpl.containerLaunched(ContainerLauncherContextImpl.java:47)
> at
> org.apache.tez.dag.app.MockDAGAppMaster$MockContainerLauncher.launch(MockDAGAppMaster.java:280)
> at
> org.apache.tez.dag.app.MockDAGAppMaster$MockContainerLauncher.launchContainer(MockDAGAppMaster.java:219)
> at
> org.apache.tez.dag.app.launcher.ContainerLauncherManager.handle(ContainerLauncherManager.java:200)
> at
> org.apache.tez.dag.app.launcher.ContainerLauncherManager.handle(ContainerLauncherManager.java:46)
> at
> org.apache.tez.common.AsyncDispatcher.dispatch(AsyncDispatcher.java:183)
> at org.apache.tez.common.AsyncDispatcher$1.run(AsyncDispatcher.java:114)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> Wasn't caught in jenkins as these tests are very long running tests and are
> marked as @Ignore (mainly for internal testing).
> Same exception with testMemoryBroadcast, testMemoryOneToOne,
> testMemoryRootInputEvents
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