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https://issues.apache.org/jira/browse/SPARK-12228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15047954#comment-15047954
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Apache Spark commented on SPARK-12228:
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User 'yhuai' has created a pull request for this issue:
https://github.com/apache/spark/pull/10204
> Use in-memory for execution hive's derby metastore
> --------------------------------------------------
>
> Key: SPARK-12228
> URL: https://issues.apache.org/jira/browse/SPARK-12228
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Yin Huai
> Assignee: Yin Huai
>
> Starting from Hive 0.13, the derby metastore can use a in-memory backend.
> Since our execution hive is a fake metastore, if we use in-memory mode, we
> can reduce the time that is used on creating the execution hive.
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