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Posted to issues@hbase.apache.org by "Sergey Shelukhin (JIRA)" <ji...@apache.org> on 2019/05/13 20:31:00 UTC

[jira] [Created] (HBASE-22408) add a metric for regions OPEN on non-live servers

Sergey Shelukhin created HBASE-22408:
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             Summary: add a metric for regions OPEN on non-live servers
                 Key: HBASE-22408
                 URL: https://issues.apache.org/jira/browse/HBASE-22408
             Project: HBase
          Issue Type: Bug
            Reporter: Sergey Shelukhin
            Assignee: Sergey Shelukhin


This serves 2 purposes for monitoring:
1) Catching when regions are on dead servers due to long WAL splitting or other delays in SCP; at that time, the regions are not listed as RITs; we'd like to be able to have alerts in such cases.
2) Catching various bugs in assignment and procWAL corruption, etc. that leave region "OPEN" on a server that no longer exists, again to alert the administrator via a metric.

Later, it might be possible to add more logic to distinguish 1 and 2, and add logic to mitigate 2 automatically and also set some metric to alert the administrator to investigate later.



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