Example ERROR message
ERROR [CompactionExecutor:15500] 2018-01-06 16:24:55,078 Ref.java:277 - Error when closing class
What does this ERROR message mean?
The message indicates a failure while during DSE shutdown, and the inability to complete closure of a specific thread or operation.
Why does this ERROR occur?
This error can occur if threads are busy during the shutdown signal, and can't complete their own shutdown task correctly.
How do you fix this ERROR?
The fix for this depends on the error or stack trace which follows the original. Very often, this error is harmless and needs no corrective action. Contact support if you suspect issues arising from a result of this error.
ERROR [CompactionExecutor:15392] 2016-01-06 16:24:55,078 Ref.java:277 - Error when closing class org.apache.cassandra.io.sstable.SSTableReader$InstanceTidier@718703651:/var/lib/cassandra/data/ks/cf-ddc0bbc097a211e5bc7b0b967491ea91/sstable-ka-69 java.util.concurrent.RejectedExecutionException
In this example, we see a RejectedExecutionException. Its likely that tasks were executed after this specific thread pool was shutdown. In this case, we would recommend updating to latest version and/or contacting support as this would be a timing issue in the code and likely bug.