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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2014/08/25 10:38:58 UTC

[jira] [Commented] (SPARK-3198) Generates the expression id while necessary

    [ https://issues.apache.org/jira/browse/SPARK-3198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14108891#comment-14108891 ] 

Apache Spark commented on SPARK-3198:
-------------------------------------

User 'chenghao-intel' has created a pull request for this issue:
https://github.com/apache/spark/pull/2114

> Generates the expression id while necessary
> -------------------------------------------
>
>                 Key: SPARK-3198
>                 URL: https://issues.apache.org/jira/browse/SPARK-3198
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Cheng Hao
>
> Currently, Catalyst harnesses the AtomicLong for the expression id generation algorithm, which reduce the performance dramatically in a multithread env.



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