[jira] [Created] (HBASE-27058) Admin#getLastMajorCompactionTimestamp() doesn't get updated when the EnvironmentEdgeManager clock is stopped

["Istvan Toth (Jira)" <ji...@apache.org>]

Istvan Toth created HBASE-27058:
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             Summary: Admin#getLastMajorCompactionTimestamp() doesn't get updated when the EnvironmentEdgeManager clock is stopped
                 Key: HBASE-27058
                 URL: https://issues.apache.org/jira/browse/HBASE-27058
             Project: HBase
          Issue Type: Bug
    Affects Versions: 2.5.0
            Reporter: Istvan Toth


In Hbase 2.0-2.4 it is possible to check for a finished compaction by polling 

Admin.getLastMajorCompactionTimestamp() for the table under compaction, even when the clock is stopped via EnvironmentEdgeManager.

However, in Hbase 2.5 the Admin.getLastMajorCompactionTimestamp() will not be updated even after the compaction is finished, and getCompactionState() returns NONE.

I am not even sure that this is bug, however, this has broken one of our Phoenix tests, and may cause problems for others.

This is the test code that breaks:
[https://github.com/apache/phoenix/blob/8aa825ed88828a99d40fdb68eb2f930981cd8a6b/phoenix-core/src/test/java/org/apache/phoenix/util/TestUtil.java#L818]

Admin.getLastMajorCompactionTimestamp() seems to take the value from the Metrics, so I guess that the metrics no longer get updated somewhere when the clock is stopped.

I did not dig deeper than that.



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