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https://issues.apache.org/jira/browse/FLINK-18551?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17156606#comment-17156606
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Xintong Song commented on FLINK-18551:
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Have you measured how long it takes to launch a TM on your cluster? I mean from
YarnResourceManager adding the container request to the TM successfully started
and registered to RM. I'm afraid even 2-3s takes only a very small portion in
the overall TM start-up time.
> Don't need to download flink-conf.yaml when launching taskmanager on Yarn mode
> ------------------------------------------------------------------------------
>
> Key: FLINK-18551
> URL: https://issues.apache.org/jira/browse/FLINK-18551
> Project: Flink
> Issue Type: Improvement
> Affects Versions: 1.10.1, 1.11.0
> Reporter: Yumeng Zhang
> Priority: Minor
>
> In current flink version, launching a taskmanager on Yarn will follow these
> steps:
> 1. download flink-conf.yaml file to the local working directory
> 2. get Configuration object by reading local flink-conf.yaml file
> We could reduce the IO operation by setting flinkConfig to container env when
> createTaskExecutorContext in jobmanager side and getting Configuration object
> by system env in taskmanager side. This way we don't need to download
> flink-conf.yaml when launching taskmanager on Yarn and could accelerate the
> start process a little bit.
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