[
https://issues.apache.org/jira/browse/SPARK-22537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16254730#comment-16254730
]
Apache Spark commented on SPARK-22537:
--------------------------------------
User 'gczsjdy' has created a pull request for this issue:
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
>
> 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-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
