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https://issues.apache.org/jira/browse/HBASE-26296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17419941#comment-17419941
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Bryan Beaudreault commented on HBASE-26296:
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I realized that RegionServer versions are available via
getClusterMetrics().getLiveServerMetrics(). Each ServerMetrics has a
getVersion().
However, we still have no way to get the version for backup masters.
> Make it easier to orchestrate rolling upgrades
> ----------------------------------------------
>
> Key: HBASE-26296
> URL: https://issues.apache.org/jira/browse/HBASE-26296
> Project: HBase
> Issue Type: Improvement
> Reporter: Bryan Beaudreault
> Priority: Minor
>
> In order to orchestrate rolling upgrades, we need a way to query VersionInfo
> on a per-server basis. Currently I can see version exposed in two ways:
> * One can hit the /dump endpoint, but this creates a ton of extra output and
> is not machine parseable.
> * One can call Admin.getClusterMetrics() with Option.HBASE_VERSION, but the
> resulting response only has a single getHBaseVersion() which only represents
> the version for the active HMaster
> We could make it a lot easier to orchestrate rolling upgrades if we exposed
> the VersionInfo details for all servers in the cluster. At a minimum I think
> we could add it to the /jmx response, but it would also be very helpful to
> add it to Admin.
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