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https://issues.apache.org/jira/browse/HIVE-13834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15311533#comment-15311533
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Eugene Koifman commented on HIVE-13834:
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[~wzheng]
org.apache.hadoop.hive.ql.lockmgr.TestDbTxnManager2.testLocksInSubquery 5.9 sec
1
seems like a real failure.
Why is this committed?
> Use LinkedHashMap instead of HashMap for LockRequestBuilder to maintain
> predictable iteration order
> ---------------------------------------------------------------------------------------------------
>
> Key: HIVE-13834
> URL: https://issues.apache.org/jira/browse/HIVE-13834
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Affects Versions: 1.3.0, 2.1.0
> Reporter: Wei Zheng
> Assignee: Wei Zheng
> Fix For: 2.2.0
>
> Attachments: HIVE-13834.1.patch
>
>
> In Java 7 it is assumed the iteration order is always the same as the insert
> order, but that's not guaranteed. In Java 8 some unit test breaks because of
> this ordering change. Solution is to use LinkedHashMap.
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