Bryan Beaudreault created HBASE-26296:
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Summary: 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
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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