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From "Mike Drob (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-20835) Document how to get replication reporting
Date Mon, 02 Jul 2018 15:02:00 GMT
Mike Drob created HBASE-20835:
---------------------------------

             Summary: Document how to get replication reporting
                 Key: HBASE-20835
                 URL: https://issues.apache.org/jira/browse/HBASE-20835
             Project: HBase
          Issue Type: Task
          Components: Replication
    Affects Versions: 2.1.0
            Reporter: Mike Drob
            Assignee: Duo Zhang
             Fix For: 2.1.0


Based on my questions at the tail end of HBASE-19543

bq. We have some tooling that checks on replication queues and reads the znode as the source
of truth. When replication is disabled, it's expected that the node was still there, but just
empty. Is there a better way to get this same information?

I understand that with table based replication it doesn't make sense to check ZK for status.
However, losing the ability to inspect the data and get information is a tough hit for operators.
Do we have APIs that expose the same sort of metrics?

bq. how many peers/queues, queue size, position in the queue, and age of last op

Assigning to you for now, Duo, since you were both primary implementor and RM for 2.1.0 and
I'm not sure who else would know the answers. If the docs already exist, then nothing to do
but we should include them in the RN. Maybe this will need additional code, but I hope it's
already there and is something we can write a workaround for.



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