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https://issues.apache.org/jira/browse/YARN-6405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15962417#comment-15962417
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Jian He commented on YARN-6405:
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bq. We also need to make sure strict placement for unique components will
still work, as this is required for apps like ZooKeeper that do not write their
data to HDFS.
could you elaborate on this : does this mean a failed ZK instance needs to be
strictly re-allocated on the same node, or to be re-allocated on one of the
nodes where zk instances ever ran ?
For the former, the container auto-restart may satisfy - a container will be
restarted on the same node. For the latter, YARN-5468 should satisfy.
> Improve configuring services through REST API
> ---------------------------------------------
>
> Key: YARN-6405
> URL: https://issues.apache.org/jira/browse/YARN-6405
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Jian He
> Assignee: Jian He
> Attachments: YARN-6405.yarn-native-services.01.patch,
> YARN-6405.yarn-native-services.02.patch,
> YARN-6405.yarn-native-services.03.patch,
> YARN-6405.yarn-native-services.04.patch
>
>
> YARN-4793 defined various ways that user can config services through the
> configuration section of the REST API. But, some semantics are not yet
> supported in the back-end server (AM). YARN-6255 has done some work, this
> jira is to complete this task - support configuring services through REST API
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