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From "Sidharta Seethana (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-3648) ContainerExecutor interface methods are too brittle
Date Thu, 14 May 2015 21:42:59 GMT
Sidharta Seethana created YARN-3648:
---------------------------------------

             Summary: ContainerExecutor interface methods are too brittle
                 Key: YARN-3648
                 URL: https://issues.apache.org/jira/browse/YARN-3648
             Project: Hadoop YARN
          Issue Type: Bug
            Reporter: Sidharta Seethana


The ContainerExecutor interface today does not encapsulate method arguments in any way - this
makes it brittle when executor implementations need additional arguments in order to implement
certain functionality. A couple of example methods where this is a problem : startLocalizer
, launchContainer - additional arguments would break the existing interface and would require
changes to all executor implementations in YARN. In order to make this interface less brittle
in the future, it would make sense to encapsulate arguments in some kind of a ‘context’
object which could be modified/extended without breaking the ContainerExecutor interface in
the future.



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