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https://issues.apache.org/jira/browse/TEZ-2193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14359726#comment-14359726
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Jeff Zhang commented on TEZ-2193:
---------------------------------
Change the jira title to "Check returned value from EdgeManagerPlugin before
using it"
Upload a patch to check the returned value from EdgeManagerPlugin, otherwise
invalid value may cause some potential weird issue, like the case mentioned
above.
[~hitesh] [~sseth] [~bikassaha] Please help review it.
> Check returned value from EdgeManagerPlugin before using it
> -----------------------------------------------------------
>
> Key: TEZ-2193
> URL: https://issues.apache.org/jira/browse/TEZ-2193
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Jeff Zhang
> Assignee: Jeff Zhang
> Attachments: TEZ-2193-1.patch
>
>
> e.g. dag has vertices v1, v2 and shuffle edge between them, and v2 has custom
> vertex manager and -1 parallelism. In this case v1's output spec may be has
> -1 physical edge which will cause task hangs in TezChild.
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