Sergey Shelukhin created HBASE-22408: ----------------------------------------
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. -- This message was sent by Atlassian JIRA (v7.6.3#76005)