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https://issues.apache.org/jira/browse/TEZ-3416?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15431797#comment-15431797
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Zhiyuan Yang commented on TEZ-3416:
-----------------------------------
Please notice the Hive and Tez here is compiled with cartesian product edge.
While the problem seems unrelated with cartesian product edge, there might
still be a chance. I'll try to reproduce this bug without cartesian product
edge.
> ArrayIndexOutOfBoundsException happens in ScatterGatherEdgeManager after DAG
> recovery
> -------------------------------------------------------------------------------------
>
> Key: TEZ-3416
> URL: https://issues.apache.org/jira/browse/TEZ-3416
> Project: Apache Tez
> Issue Type: Bug
> Reporter: Zhiyuan Yang
> Assignee: Zhiyuan Yang
> Attachments: applog
>
>
> This happened in Hive on Tez. The query is select count(\*) from f as a, f as
> b. When I manually killed AM, all vertices except the one join the data
> finished reconfiguration. After recovery, DAG failed with
> ArrayIndexOutOfBoundsException in ScatterGatherEdgeManager of the counting
> vertex. It doesn't happen every time.
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