[
https://issues.apache.org/jira/browse/MAPREDUCE-6749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15549700#comment-15549700
]
Naganarasimha G R commented on MAPREDUCE-6749:
----------------------------------------------
Thanks [~devaraj.k] for the document and raising these jira's, it has been
always discussing but no progress on this topic lets try to make some progress
for this feature here .
Few queries:
# Is it required to have number of total Maps(/reducers) to be run using
container reuse? i felt we can just keep whether to reuse the containers are
not and one assumption that map containers will be reused only for map and
reduce only for reduce
# did not understand the need of *RMContainerReuseRequestor.java*, may be i
will go through MAPREDUCE-6773 but was expecting more like just
TaskAttemptIimpl gets TA_DONE event was expecting it do have a new
ReuseContainerTransition where in if required it will reassign a new task to it
else will continue to *CLEANUP_CONTAINER_TRANSITION*. may be we can discuss
more on this in MAPREDUCE-6773 ?
# If we have some conclusion on issue 2, then we can think of whether only
*TaskAttemptImpl* state is sufficient or we need to modify others too.
# *Logs generated by the tasks in a container will be appended in the same
container log file* we need to ensure we are able to display trhough JHS and
other places where ever required to display
> MR AM should reuse containers for Map/Reduce Tasks
> --------------------------------------------------
>
> Key: MAPREDUCE-6749
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6749
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: applicationmaster, mrv2
> Reporter: Devaraj K
> Assignee: Devaraj K
> Attachments: MAPREDUCE-6749-Container Reuse-v0.pdf
>
>
> It is with the continuation of MAPREDUCE-3902, MR AM should reuse containers
> for Map/Reduce Tasks similar to the JVM Reuse feature we had in MRv1.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: mapreduce-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: mapreduce-issues-h...@hadoop.apache.org
