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https://issues.apache.org/jira/browse/HDFS-12467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16187456#comment-16187456
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Nandakumar commented on HDFS-12467:
-----------------------------------
Thanks [~vagarychen] for the detailed description. I agree with whatever you
have said.
Previously there was no way to bring SCM out of startup chill mode with any API
calls, it happened only through datanode registration. I used
{{forceExitChillMode}} for this, now with forceExitChillMode() the system will
come out of both the chill modes.
I would like to propose the following changes for chillMode (refactor the whole
chill mode logic)
The following methods will be supported to manipulate chill mode status of SCM
* {{forceExitChillMode}} - will bring SCM out of chill mode (both startup and
manual)
* {{enterChillMode}} - will set manual chill mode flag to true
* {{exitChillMode}} - will set manual chill mode flag to false
* {{getChillModeStatus}} - will return chill mode status string
* {{inChillMode}} - will return true if SCM is in chill mode, else false
The following methods will be removed
* {{clearChillModeFlag}}
* {{forceEnterChillMode}}
* {{isInManualChillMode}}
* {{isOutOfNodeChillMode}}
The getter and setter for MinimumChillModeNodes will remain as it is
* {{setMinimumChillModeNodes}}
* {{getMinimumChillModeNodes}}
This will make it easy to understand and use.
> Ozone: SCM: NodeManager should log when it comes out of chill mode
> ------------------------------------------------------------------
>
> Key: HDFS-12467
> URL: https://issues.apache.org/jira/browse/HDFS-12467
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Reporter: Nandakumar
> Assignee: Nandakumar
> Priority: Minor
> Attachments: HDFS-12467-HDFS-7240.000.patch,
> HDFS-12467-HDFS-7240.001.patch, HDFS-12467-HDFS-7240.002.patch,
> HDFS-12467-HDFS-7240.003.patch, HDFS-12467-HDFS-7240.004.patch
>
>
> {{NodeManager}} should add a log message when it comes out of chill mode.
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