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https://issues.apache.org/jira/browse/TEZ-2421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14535192#comment-14535192
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Bikas Saha commented on TEZ-2421:
---------------------------------
This is happening because recovery code path is directly manipulating the state
changes of vertex/task/attempt instead of following the normal state
transitions. TEZ-1019 is tracking this but has not yet been committed. I will
try to fix this.
> Deadlock in AM because attempt and vertex locking each other out
> ----------------------------------------------------------------
>
> Key: TEZ-2421
> URL: https://issues.apache.org/jira/browse/TEZ-2421
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Bikas Saha
> Assignee: Bikas Saha
> Priority: Blocker
> Attachments: TEZ-2421.1.patch, TEZ-2421.2.patch, TEZ-2421.3.patch
>
>
> Ideally locks should be taken one way - either going down or up. Preferably
> not going up because most such data can be passed in during object
> construction.
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