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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-3373) Filtering operations should optionally rebuild routing tables
Date Mon, 04 May 2015 11:46:18 GMT

     [ https://issues.apache.org/jira/browse/SPARK-3373?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Owen updated SPARK-3373:
-----------------------------
    Target Version/s:   (was: 1.2.1, 1.3.0)

> Filtering operations should optionally rebuild routing tables
> -------------------------------------------------------------
>
>                 Key: SPARK-3373
>                 URL: https://issues.apache.org/jira/browse/SPARK-3373
>             Project: Spark
>          Issue Type: Improvement
>          Components: GraphX
>    Affects Versions: 1.1.0, 1.1.1
>            Reporter: uncleGen
>
> Graph operations that filter the edges (subgraph, mask, groupEdges) currently reuse the
existing routing table to avoid the shuffle which would be required to build a new one. However,
this may be inefficient when the filtering is highly selective. Vertices will be sent to more
partitions than necessary, and the extra routing information may take up excessive space.



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