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https://issues.apache.org/jira/browse/FLINK-5046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15654782#comment-15654782
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ASF GitHub Bot commented on FLINK-5046:
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Github user tillrohrmann closed the pull request at:
https://github.com/apache/flink/pull/2780
> Avoid redundant serialization when creating the TaskDeploymentDescriptor
> ------------------------------------------------------------------------
>
> Key: FLINK-5046
> URL: https://issues.apache.org/jira/browse/FLINK-5046
> Project: Flink
> Issue Type: Improvement
> Components: Distributed Coordination
> Affects Versions: 1.2.0, 1.1.3
> Reporter: Till Rohrmann
> Assignee: Till Rohrmann
> Fix For: 1.2.0, 1.1.4
>
>
> When creating the {{TaskDeploymentDescriptor}} we extract information from
> the {{ExecutionGraph}} which is defined job-wide and from the
> {{ExecutionJobVertex}} which is defined operator-wide. The extracted
> information will be serialized for every subtask even though it stays the
> same.
> As an improvement, we can serialize this information once and give the
> serialized byte array to the {{TaskDeploymentDescriptor}}. This will reduce
> the serialization work Flink has to do when deploying sub tasks.
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