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https://issues.apache.org/jira/browse/FLINK-17295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17538581#comment-17538581
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Zhu Zhu commented on FLINK-17295:
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The benchmark value is the size of a serialized TDD.
The difference between the 2 proposal is, each execution of #1 has a unique
AbstractID, while all executions of #2 share one same ExecutionGraphID.
Therefore, given *P* is the parallelism, a TDD of #1 contains *P* unique
{*}AbstractID{*}s(each 16 bytes), while a TDD of #2 contains *P*
{*}references{*}(each 4 bytes) to the ExecutionGraphID.
> Refactor the ExecutionAttemptID to consist of ExecutionVertexID and
> attemptNumber
> ---------------------------------------------------------------------------------
>
> Key: FLINK-17295
> URL: https://issues.apache.org/jira/browse/FLINK-17295
> Project: Flink
> Issue Type: Sub-task
> Components: Runtime / Coordination
> Reporter: Yangze Guo
> Assignee: Zhu Zhu
> Priority: Major
> Labels: pull-request-available
>
> Make the ExecutionAttemptID being composed of (ExecutionVertexID,
> attemptNumber).
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