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Posted to issues@spark.apache.org by "Reynold Xin (JIRA)" <ji...@apache.org> on 2016/04/19 23:36:25 UTC
[jira] [Resolved] (SPARK-14042) Add support for custom coalescers
[ https://issues.apache.org/jira/browse/SPARK-14042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Reynold Xin resolved SPARK-14042.
---------------------------------
Resolution: Fixed
Assignee: Nezih Yigitbasi
Fix Version/s: 2.0.0
> Add support for custom coalescers
> ---------------------------------
>
> Key: SPARK-14042
> URL: https://issues.apache.org/jira/browse/SPARK-14042
> Project: Spark
> Issue Type: New Feature
> Components: Spark Core
> Reporter: Nezih Yigitbasi
> Assignee: Nezih Yigitbasi
> Fix For: 2.0.0
>
>
> Per our discussion on the mailing list (please see [here|http://mail-archives.apache.org/mod_mbox//spark-dev/201602.mbox/%3CCA+g63F7aVRBH=WyyK3nvBSLCMPtSdUuL_Ge9=WW4DnmnvY4SXg@mail.gmail.com%3E]) it would be nice to specify a custom coalescing policy as the current {{coalesce()}} method only allows the user to specify the number of partitions and we cannot really control much. The need for this feature popped up when I wanted to merge small files by coalescing them by size.
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