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Posted to issues@spark.apache.org by "Reynold Xin (JIRA)" <ji...@apache.org> on 2015/06/05 02:34:38 UTC

[jira] [Updated] (SPARK-8106) Set derby.system.durability=test in order to speed up Hive compatibility tests

     [ https://issues.apache.org/jira/browse/SPARK-8106?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Reynold Xin updated SPARK-8106:
-------------------------------
    Component/s: Tests
                 Build

> Set derby.system.durability=test in order to speed up Hive compatibility tests
> ------------------------------------------------------------------------------
>
>                 Key: SPARK-8106
>                 URL: https://issues.apache.org/jira/browse/SPARK-8106
>             Project: Spark
>          Issue Type: Improvement
>          Components: Build, SQL, Tests
>            Reporter: Josh Rosen
>            Assignee: Josh Rosen
>             Fix For: 1.5.0
>
>
> Derby has a configuration property named {{derby.system.durability}} that disables I/O synchronization calls for many writes.  This sacrifices durability but can result in large performance gains, which is appropriate for tests.
> We should enable this in our test system properties in order to speed up the Hive compatibility tests.  I saw 2-3x speedups locally with this change.



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