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Mingliang Liu commented on MAPREDUCE-7294: ------------------------------------------ [~wzzdreamer] I see major conflict when backporting to branch-2.10 branch. Could you file a new PR targeting that branch and link here? Thanks, > Every NM will try to upload Jar/Archives/Files/Resources to Yarn Shared Cache > Manager Like DDOS > ----------------------------------------------------------------------------------------------- > > Key: MAPREDUCE-7294 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-7294 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: mrv2 > Affects Versions: 2.10.0, 3.3.0, 3.2.1, 3.1.4 > Reporter: zhenzhao wang > Assignee: zhenzhao wang > Priority: Major > Fix For: 3.2.2, 3.4.0, 3.1.5, 3.3.1 > > > The design of yarn shared cache manager is only to allow application master > should upload the jar/files/resource. However, there was a bug in the code > since 2.9.0. Every node manager that take the job task will try to upload the > jar/resources. Let's say one job have 5000 tasks. Then there will be up to > 5000 NMs try to upload the jar. This is like DDOS and create a snowball > effect. It will end up with inavailability of yarn shared cache manager. It > wil cause time out in localization and lead to job failure. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: mapreduce-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: mapreduce-issues-h...@hadoop.apache.org