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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2017/03/15 03:27:41 UTC

[jira] [Assigned] (SPARK-19956) Optimize a location order of blocks with topology information

     [ https://issues.apache.org/jira/browse/SPARK-19956?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-19956:
------------------------------------

    Assignee: Apache Spark

> Optimize a location order of blocks with topology information
> -------------------------------------------------------------
>
>                 Key: SPARK-19956
>                 URL: https://issues.apache.org/jira/browse/SPARK-19956
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 2.1.0
>            Reporter: coneyliu
>            Assignee: Apache Spark
>
> When call the method getLocations of BlockManager, we only compare the data block host. Random selection for non-local data blocks, this may cause the selected data block to be in a different rack. So in this patch to increase the sort of the rack.



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