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Posted to issues@spark.apache.org by "Sean Owen (JIRA)" <ji...@apache.org> on 2017/08/02 09:16:00 UTC
[jira] [Resolved] (SPARK-21474) Make number of parallel fetches
from a reducer configurable
[ https://issues.apache.org/jira/browse/SPARK-21474?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean Owen resolved SPARK-21474.
-------------------------------
Resolution: Won't Fix
> Make number of parallel fetches from a reducer configurable
> -----------------------------------------------------------
>
> Key: SPARK-21474
> URL: https://issues.apache.org/jira/browse/SPARK-21474
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 2.2.0
> Reporter: Raajay Viswanathan
> Priority: Minor
> Labels: configuration-addition
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> Currently the number of parallel fetches is hard-coded to 5. As a result the size of each fetch request is fixed at 1/5th of maxSizeInFlights. Since, chunks are requested in bursts of fetchRequests; the size of a burst to a single shuffle service can be high for large maxSizeInFlight
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