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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2016/01/19 14:56:39 UTC
[jira] [Resolved] (SPARK-3917) Compress data before network
transfer
[ 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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