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https://issues.apache.org/jira/browse/YARN-8060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16429436#comment-16429436
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Billie Rinaldi commented on YARN-8060:
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Thanks for the review, [[email protected]]! Great suggestions. I think I
have addressed them all in patch 2. While I was adding the configuration
property to disable the default probe, I noticed some inconsistencies with how
other config property values are retrieved (hardcoded defaults and the like). I
couldn't resist cleaning these up and improving the descriptions in the site
docs. Now there is only one property that is not retrieved through the
recommended YarnServiceConf helper methods, and that is docker.network. In
retrospect, perhaps we should have renamed this to have the yarn.service prefix
and converted it to use the YarnServiceConf methods as well. The advantage of
the the YarnServiceConf methods is that they allow the default values for
properties to be read from the YARN Configuration, if the properties are
specified there.
> Create default readiness check for service components
> -----------------------------------------------------
>
> Key: YARN-8060
> URL: https://issues.apache.org/jira/browse/YARN-8060
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: yarn-native-services
> Reporter: Billie Rinaldi
> Assignee: Billie Rinaldi
> Priority: Major
> Attachments: YARN-8060.1.patch, YARN-8060.2.patch
>
>
> It is currently possible for a component instance to have READY status before
> the AM retrieves an IP for the container. We should make sure the IP has been
> retrieved before marking the instance as READY.
> This default probe could also have an option to check for a DNS entry for the
> instance's hostname if a DNS address is provided.
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