Bharath Vissapragada 6f213e9d5a HBASE-24075: Fix a race between master shutdown and metrics (re)init ... JMXCacheBuster resets the metrics state at various points in time. These events can potentially race with a master shutdown. When the master is tearing down, metrics initialization can touch a lot of unsafe state, for example invalidated FS objects. To avoid this, this patch makes the getMetrics() a no-op when the master is either stopped or in the process of shutting down. Additionally, getClusterId() when the server is shutting down is made a no-op. Simulating a test for this is a bit tricky but with the patch I don't locally see the long stacktraces from the jira. Signed-off-by: Michael Stack <stack@apache.org>		2020-03-31 16:36:31 -07:00
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src	HBASE-24075: Fix a race between master shutdown and metrics (re)init	2020-03-31 16:36:31 -07:00
pom.xml	HBASE-23829 Get `-PrunSmallTests` passing on JDK11	2020-03-16 15:21:37 -07:00