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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