Rushabh Shah created HBASE-25539:
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Summary: Add metric for age of oldest wal.
Key: HBASE-25539
URL: https://issues.apache.org/jira/browse/HBASE-25539
Project: HBase
Issue Type: Improvement
Components: metrics, regionserver
Affects Versions: 1.6.0
Reporter: Rushabh Shah
Assignee: Rushabh Shah
In our production clusters, we have seen multiple cases where some of the wals
are lingering in zk replication queues for months and we have no insight into
it. Recently we fixed one case where wal was getting stuck if it is 0 size and
from old sources. HBASE-25536. It would be helpful if we can have some metric
which will tell us the age of oldest wal and we can add an alert for monitoring
purpose.
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