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From "Sangjin Lee (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-1771) many getFileStatus calls made from node manager for localizing a public distributed cache resource
Date Fri, 28 Feb 2014 22:36:21 GMT
Sangjin Lee created YARN-1771:
---------------------------------

             Summary: many getFileStatus calls made from node manager for localizing a public
distributed cache resource
                 Key: YARN-1771
                 URL: https://issues.apache.org/jira/browse/YARN-1771
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager
            Reporter: Sangjin Lee
            Assignee: Sangjin Lee
            Priority: Critical


We're observing that the getFileStatus calls are putting a fair amount of load on the name
node as part of checking the public-ness for localizing a resource that belong in the public
cache.

We see 7 getFileStatus calls made for each of these resource. We should look into reducing
the number of calls to the name node. One example:

{noformat}
2014-02-27 18:07:27,351 INFO audit: ... cmd=getfileinfo	src=/tmp/temp-887708724/tmp883330348/foo-0.0.44.jar
...
2014-02-27 18:07:27,352 INFO audit: ... cmd=getfileinfo	src=/tmp/temp-887708724/tmp883330348/foo-0.0.44.jar
...
2014-02-27 18:07:27,352 INFO audit: ... cmd=getfileinfo	src=/tmp/temp-887708724/tmp883330348
...
2014-02-27 18:07:27,353 INFO audit: ... cmd=getfileinfo	src=/tmp/temp-887708724 ...
2014-02-27 18:07:27,353 INFO audit: ... cmd=getfileinfo	src=/tmp ...
2014-02-27 18:07:27,354 INFO audit: ... cmd=getfileinfo	src=/	 ...
2014-02-27 18:07:27,354 INFO audit: ... cmd=getfileinfo	src=/tmp/temp-887708724/tmp883330348/foo-0.0.44.jar
...
2014-02-27 18:07:27,355 INFO audit: ... cmd=open	src=/tmp/temp-887708724/tmp883330348/foo-0.0.44.jar
...
{noformat}



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