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https://issues.apache.org/jira/browse/HIVE-14287?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zoltan Haindrich updated HIVE-14287:
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Attachment: HIVE-14287.1.patch
> Explain output: printed nested mapvalues are dependent on map entry iteration
> order
> -----------------------------------------------------------------------------------
>
> Key: HIVE-14287
> URL: https://issues.apache.org/jira/browse/HIVE-14287
> Project: Hive
> Issue Type: Improvement
> Reporter: Zoltan Haindrich
> Assignee: Zoltan Haindrich
> Attachments: HIVE-14287.1.patch
>
>
> Order of map keys are handled by a {{TreeSet}} in {{ExplainTask#outputMap}},
> but for Map values, there is only a {{toString()}} which implicitly iterates
> over the map and prints them - in case of a {{HashMap}} this iteration order
> may vary between jdk versions - and may cause false positive testfailures
> https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/exec/ExplainTask.java#L472
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