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From "jiayuhan-it (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-7017) Too many times of meaningless invocation in TaskAttemptImpl#resolveHosts
Date Mon, 04 Dec 2017 08:17:01 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-7017?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

jiayuhan-it updated MAPREDUCE-7017:
-----------------------------------
    Status: Open  (was: Patch Available)

> Too many times of meaningless invocation in TaskAttemptImpl#resolveHosts
> ------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-7017
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7017
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: mr-am
>    Affects Versions: 3.0.0-alpha4
>            Reporter: jiayuhan-it
>              Labels: patch
>
>     In MRAppMaster each TaskAttempt call resolveHosts function too many times for getting
dataLocalHosts.  When a job has a lot of tasks or the machine configures unreasonab, it will
waste a lot of time.



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