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https://issues.apache.org/jira/browse/HIVE-2211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13046840#comment-13046840
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Ning Zhang commented on HIVE-2211:
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+1. In the followup we should add a unit test for this function to compare the
contentsummary returned by parallel execution and serial execution.
> Fix a bug caused by HIVE-243
> ----------------------------
>
> Key: HIVE-2211
> URL: https://issues.apache.org/jira/browse/HIVE-2211
> Project: Hive
> Issue Type: Bug
> Reporter: Siying Dong
> Attachments: HIVE-2211.1.patch
>
>
> Quick fix a bug caused by HIVE-243
> HIVE-234 removed the codes to wait for the threads to finish and use
> ThreadPoolExector.shutdown() to wait for the results. The usage of
> ThreadPoolExecutor.shutdown(), however, is wrong. The codes assume that the
> function blocks until all threads finish running but it actually only marks
> status and won't block. It caused wrong result of Utilities.getInputSummary()
> and caused many jobs are executed as local mode while they have huge data.
> Revert those changes quickly. We can have a follow-up to see how to deal with
> this more efficiently if you want.
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