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https://issues.apache.org/jira/browse/HIVE-5263?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brock Noland updated HIVE-5263:
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Attachment: HIVE-5263.patch
Great to hear and thank you very much for doing the testing!
My latest patch only copies MapWork.{opParseCtxMap,joinTree},
Operator.colExprMap, and ColumnInfo.objectInspector when we are cloning the
plan (Thx for the tip Mohammad). Therefore in the runtime serialization case
they will not be copied. I think we should commit this since it gives a
substantial performance boost for complex queries and works on java 7. We can
do further optimizations in a followup jira.
https://reviews.apache.org/r/14095/
> Query Plan cloning time could be improved by using Kryo
> --------------------------------------------------------
>
> Key: HIVE-5263
> URL: https://issues.apache.org/jira/browse/HIVE-5263
> Project: Hive
> Issue Type: Improvement
> Reporter: Brock Noland
> Assignee: Brock Noland
> Attachments: HIVE-5263.patch, HIVE-5263.patch, HIVE-5263.patch
>
>
> In HIVE-1511 we implemented Kryo for serialization but did not use for query
> plan cloning. As was discussed there it's a possible speed improvement. In
> addition the current XML serialization method does not work with Java 7 so
> using Kryo is a workaround for this issue.
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