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https://issues.apache.org/jira/browse/YARN-8079?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wangda Tan reassigned YARN-8079:
--------------------------------
Assignee: Suma Shivaprasad (was: Wangda Tan)
> Support specify files to be downloaded (localized) before containers launched
> by YARN
> -------------------------------------------------------------------------------------
>
> Key: YARN-8079
> URL: https://issues.apache.org/jira/browse/YARN-8079
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Wangda Tan
> Assignee: Suma Shivaprasad
> Priority: Critical
> Attachments: YARN-8079.001.patch, YARN-8079.002.patch,
> YARN-8079.003.patch, YARN-8079.004.patch, YARN-8079.005.patch,
> YARN-8079.006.patch
>
>
> Currently, {{srcFile}} is not respected. {{ProviderUtils}} doesn't properly
> read srcFile, instead it always construct {{remoteFile}} by using
> componentDir and fileName of {{destFile}}:
> {code}
> Path remoteFile = new Path(compInstanceDir, fileName);
> {code}
> To me it is a common use case which services have some files existed in HDFS
> and need to be localized when components get launched. (For example, if we
> want to serve a Tensorflow model, we need to localize Tensorflow model
> (typically not huge, less than GB) to local disk. Otherwise launched docker
> container has to access HDFS.
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