[
https://issues.apache.org/jira/browse/FLINK-10158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16582241#comment-16582241
]
zhijiang commented on FLINK-10158:
----------------------------------
I already improved it in
[FLINK-9913|https://issues.apache.org/jira/browse/FLINK-9913], and there will
be only one serializer for all the subpartitions, so the memories of
intermediate serialization buffers are decreased a lot.
> The DataOutputSerializer may consume excessive memory
> -----------------------------------------------------
>
> Key: FLINK-10158
> URL: https://issues.apache.org/jira/browse/FLINK-10158
> Project: Flink
> Issue Type: Improvement
> Components: Core
> Affects Versions: 1.4.2, 1.5.2, 1.6.0
> Reporter: aitozi
> Assignee: aitozi
> Priority: Major
>
> I found that the dataOutputSerializer clear the intermediate buffer when the
> buffer exceed the 5M (as a fixed configuration)， But when we encountered the
> rebalance or keyByPartition and the downstream has a large parallel it will
> also consume a lot memory, we can do two things :
> 1. make this config configurable
> 2. like the https://issues.apache.org/jira/projects/FLINK/issues/FLINK-1326
> mentioned, we can make the serializer one for the output
> What's your idea ? [~StephanEwen]
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
