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Posted to issues@spark.apache.org by "coneyliu (JIRA)" <ji...@apache.org> on 2017/03/15 03:24:41 UTC

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

coneyliu created SPARK-19956:
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             Summary: 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


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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