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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (SPARK-17115) Improve the performance of UnsafeProjection for wide table
Date Wed, 17 Aug 2016 22:07:20 GMT

     [ https://issues.apache.org/jira/browse/SPARK-17115?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Apache Spark reassigned SPARK-17115:
------------------------------------

    Assignee: Apache Spark  (was: Davies Liu)

> Improve the performance of UnsafeProjection for wide table
> ----------------------------------------------------------
>
>                 Key: SPARK-17115
>                 URL: https://issues.apache.org/jira/browse/SPARK-17115
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.0.0
>            Reporter: Davies Liu
>            Assignee: Apache Spark
>
> We increase the threshold for splitting the generate code for expressions to 64K in 2.0
by accident (too optimistic), which could cause bad performance (the huge method may not be
JITed), we should decrease that to 16K.



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