Can you grab a thread dump with jstack as well? -- Jeff Jirsa
> On Dec 19, 2017, at 3:32 AM, Hannu Kröger <hkro...@gmail.com> wrote: > > Hi, > > I opened a ticket about nodetool compactionstats hanging: > https://issues.apache.org/jira/browse/CASSANDRA-14130 > > The root cause seems to be JMX metric fetching hanging. I was able to > replicate it on this problematic like this: > Welcome to JMX terminal. Type "help" for available commands. > $>open localhost:7199 > #Connection to localhost:7199 is opened > $>bean > org.apache.cassandra.metrics:type=Compaction,name=PendingTasksByTableName > #bean is set to > org.apache.cassandra.metrics:type=Compaction,name=PendingTasksByTableName > $>get Value > #mbean = > org.apache.cassandra.metrics:type=Compaction,name=PendingTasksByTableName: > // This command never finishes. > > This happens only on one node AFAIK. What could possibly be the problem? > Hannu
