Yesha Vora created YARN-5306:
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Summary: Yarn should detect and fail fast on duplicate resources
in container request
Key: YARN-5306
URL: https://issues.apache.org/jira/browse/YARN-5306
Project: Hadoop YARN
Issue Type: Bug
Components: yarn
Reporter: Yesha Vora
Priority: Critical
In some cases, Yarn gets duplicate copies of resources in resource-list.
In this case, you end up with a resource list which contains two copies of
resource JAR, with the timestamps of the two separate uploads —only one of
which (the later one) is correct. At download time, the NM goes through the
list and fails the download when it gets to the one with the older timestamp.
We need some utility class to do a scan & check could be used by the NM at
download time (so fail with meaningful errors), and the yarn client could
perhaps do the check before launch.
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