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https://issues.apache.org/jira/browse/HDFS-2819?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13201097#comment-13201097
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Todd Lipcon commented on HDFS-2819:
-----------------------------------
{code}
+ often the logs are rolled. Note that failover triggers a log roll
+ so the StandbyNode quickly becomes up-to-date.
{code}
I think better to say "so the StandbyNode will always be up to date before it
becomes Active>'
----
- I think dfs.ha.standby.checkpoints can be left undocumented - I only added it
for testing purposes, but I can't think of any reason why you wouldn't want it
(it's currently the only way to do checkpoints in HA!)
- I don't follow why dfs.ha.fencing.methods,
dfs.ha.fencing.ssh.private-key-files, dfs.federation.nameservices, etc aren't
documented in -default. It's OK to have them there with a blank
<value></value>. I agree that the ones that are just prefixes (eg
dfs.ha.namenodes) need to be documented elsewhere, unless you put them there as
"dfs.ha.namenodes.EXAMPLENAMESERVICE".
> Document new HA-related configs in hdfs-default.xml
> ---------------------------------------------------
>
> Key: HDFS-2819
> URL: https://issues.apache.org/jira/browse/HDFS-2819
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: documentation, ha
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Todd Lipcon
> Assignee: Eli Collins
> Attachments: hdfs-2819.txt, hdfs-2819.txt
>
>
> We've added a few configs, like shared edits dir, dfs.ha.namenodes, etc - we
> should probably add these to hdfs-default.xml so they get documented.
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