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From "Eugene Koifman (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-13834) Use LinkedHashMap instead of HashMap for LockRequestBuilder to maintain predictable iteration order
Date Tue, 31 May 2016 21:32:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-13834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15308665#comment-15308665
] 

Eugene Koifman commented on HIVE-13834:
---------------------------------------

+1

> 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
>         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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