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https://issues.apache.org/jira/browse/YARN-8079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16455562#comment-16455562
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Wangda Tan commented on YARN-8079:
----------------------------------
Found previous spec mentioned has some issues, for the files part, it should
be:
{code}
"components" : [ {
"name" : "primary-worker",
"configuration" : {
"properties" : { },
"files" : [ {
"type" : "STATIC",
"dest_file" : "run-PRIMARY_WORKER.sh",
"src_file" : "hdfs://<host>:8020/file",
} ]
},
}
]
{code}
> 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: Wangda Tan
> 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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