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https://issues.apache.org/jira/browse/FLINK-9875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16548797#comment-16548797
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ASF GitHub Bot commented on FLINK-9875:
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Github user tison1 commented on the issue:
https://github.com/apache/flink/pull/6353
Fix unstable case, the problem is code below, that may assign `constraints`
to a long array and then to a short array, which cause out of index exception.
to solve it we could init `constraints` in object construct.
https://github.com/apache/flink/blob/056486a1b81e9648a6d3dc795e7e2c6976f8388c/flink-runtime/src/main/java/org/apache/flink/runtime/jobmanager/scheduler/CoLocationGroup.java#L87-L91
> Add concurrent creation of execution job vertex
> -----------------------------------------------
>
> Key: FLINK-9875
> URL: https://issues.apache.org/jira/browse/FLINK-9875
> Project: Flink
> Issue Type: Improvement
> Components: Local Runtime
> Affects Versions: 1.5.1
> Reporter: 陈梓立
> Assignee: 陈梓立
> Priority: Major
> Labels: pull-request-available
>
> in some case like inputformat vertex, creation of execution job vertex is time
> consuming, this pr add concurrent creation of execution job vertex to
> accelerate it.
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