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From "Sean Owen (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-3917) Compress data before network transfer
Date Tue, 19 Jan 2016 13:56:39 GMT

     [ https://issues.apache.org/jira/browse/SPARK-3917?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Owen resolved SPARK-3917.
------------------------------
    Resolution: Won't Fix

The narrow issue here is probably WontFix, as the issue is more about treatment of sparse
data, not compression. I don't think another level of compression would help. This also hasn't
gotten any traction.

> Compress data before network transfer
> -------------------------------------
>
>                 Key: SPARK-3917
>                 URL: https://issues.apache.org/jira/browse/SPARK-3917
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 1.1.0
>         Environment: All
>            Reporter: junlong
>
>     When training Gradient Boosting Decision Tree on large sparse data, heavy network
flow pull down CPU utilization ratio. And through compression on network flow data, 90% are
reduced. 
>     So maybe compression before transfering may provide higher speedup on spark. And
user can configure it to decide whether compress or not.



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