[jira] [Resolved] (SPARK-22537) Aggregation of map output statistics on driver faces single point bottleneck

["Wenchen Fan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-22537?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wenchen Fan resolved SPARK-22537.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 2.3.0

Issue resolved by pull request 19763
[https://github.com/apache/spark/pull/19763]

> Aggregation of map output statistics on driver faces single point bottleneck
> ----------------------------------------------------------------------------
>
>                 Key: SPARK-22537
>                 URL: https://issues.apache.org/jira/browse/SPARK-22537
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 2.2.0
>            Reporter: Chenzhao Guo
>             Fix For: 2.3.0
>
>
> In adaptive execution, the map output statistics of all mappers will be aggregated after a stage is successfully executed. Driver takes the aggregation job while it will get slow when the number of mapper * shuffle partitions is large.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org