[
https://issues.apache.org/jira/browse/YARN-8275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16474424#comment-16474424
]
Íñigo Goiri commented on YARN-8275:
-----------------------------------
[~aw], thanks for the feedback, much appreciated.
It looks like we can put all you proposed together into an umbrella for fixing
the way Hadoop interacts with Windows.
>From this thread, I see:
* Move away from an external processese (winutils.exe) for native code:
** Replace by native Java APIs (e.g., symlinks)
** Replace by something like JNI or so
* Fix the build system to fully leverage cmake instead of msbuild
I would create an umbrella for this bigger task and make this JIRA just a
subtask focusing on the YARN side (e.g., task).
> Create a JNI interface to interact with Windows
> -----------------------------------------------
>
> Key: YARN-8275
> URL: https://issues.apache.org/jira/browse/YARN-8275
> Project: Hadoop YARN
> Issue Type: New Feature
> Components: nodemanager
> Reporter: Giovanni Matteo Fumarola
> Assignee: Giovanni Matteo Fumarola
> Priority: Major
> Attachments: WinUtils-Functions.pdf, WinUtils.CSV
>
>
> I did a quick investigation of the performance of WinUtils in YARN. In
> average NM calls 4.76 times per second and 65.51 per container.
>
> | |Requests|Requests/sec|Requests/min|Requests/container|
> |*Sum [WinUtils]*|*135354*|*4.761*|*286.160*|*65.51*|
> |[WinUtils] Execute -help|4148|0.145|8.769|2.007|
> |[WinUtils] Execute -ls|2842|0.0999|6.008|1.37|
> |[WinUtils] Execute -systeminfo|9153|0.321|19.35|4.43|
> |[WinUtils] Execute -symlink|115096|4.048|243.33|57.37|
> |[WinUtils] Execute -task isAlive|4115|0.144|8.699|2.05|
> Interval: 7 hours, 53 minutes and 48 seconds
> Each execution of WinUtils does around *140 IO ops*, of which 130 are DDL ops.
> This means *666.58* IO ops/second due to WinUtils.
> We should start considering to remove WinUtils from Hadoop and creating a JNI
> interface.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org
