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https://issues.apache.org/jira/browse/YARN-5536?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16126194#comment-16126194
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Robert Kanter commented on YARN-5536:
-------------------------------------
To put a few more details on the work required here from the comments in
YARN-5464 (the JIRA doesn't say much), as I understand it:
# Remove the XML format as-is
# Make the input format pluggable, similar to HDFS-9005
# Add a JSON format that is compatible with HDFS-9005 so users can use the same
file for both
Is that correct [~mingma]?
This is currently a blocker for Hadoop 3 beta 1. [~mingma] do you think you'll
be able to take care of this in time? The [Hadoop 3 release wiki
page|https://cwiki.apache.org/confluence/display/HADOOP/Hadoop+3.0.0+Release]
says that we only have about a month left.
If not, we have a couple faster options we can do in the meantime to make this
not a blocker:
# If we plan to keep the XML format when doing this, it won't be backwards
incompatible anymore. We can still rewrite the code to be in the pluggable
implementation, but we'd have to keep the same XML format itself.
# We could remove the XML format now (so we'd only have the original format),
and do the rest of this work later. Users won't be able to specify individual
different timeouts per host in the meantime though.
I think if we do one of those, then we can take care of this issue later if we
don't have time to take care of it now for beta 1.
> Multiple format support (JSON, etc.) for exclude node file in NM graceful
> decommission with timeout
> ---------------------------------------------------------------------------------------------------
>
> Key: YARN-5536
> URL: https://issues.apache.org/jira/browse/YARN-5536
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: graceful
> Reporter: Junping Du
> Priority: Blocker
>
> Per discussion in YARN-4676, we agree that multiple format (other than xml)
> should be supported to decommission nodes with timeout values.
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