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https://issues.apache.org/jira/browse/CASSANDRA-15916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sam Tunnicliffe updated CASSANDRA-15916:
----------------------------------------
Resolution: Invalid
Status: Resolved (was: Triage Needed)
> LEAK Detected in Cassandra
> --------------------------
>
> Key: CASSANDRA-15916
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15916
> Project: Cassandra
> Issue Type: Bug
> Reporter: Pankaj Kumar
> Priority: Normal
>
> Hi
> We are using cassandra docker environment. So 1 out of 3 cassandra, cassandra
> docker is restarting continuously. This issue is happening in production
> setup.
> Then checked system logs and debug logs and found these traceback occur
> multiple times
> ERROR [Reference-Reaper] 2020-06-29 14:40:20,800 Ref.java:229 - LEAK
> DETECTED: a reference
> (org.apache.cassandra.utils.concurrent.Ref$State@53581121) to class
> org.apache.cassandra.io.util.MmappedRegions$Tidier@194489638:/var/lib/cassandra/data/system_schema/indexes-0feb57ac311f382fba6d9024d305702f/md-626-big-Index.db
> was not released before the reference was garbage collectedDEBUG
> [SSTableBatchOpen:8] 2020-06-29 14:40:23,698 SSTableReader.java:515 - Opening
> /var/lib/cassandra/data/system_schema/indexes-0feb57ac311f382fba6d9024d305702f/md-240-big
> (0.050KiB)ERROR [SSTableBatchOpen:5] 2020-06-29 14:40:20,801
> DebuggableThreadPoolExecutor.java:239 - Error in ThreadPoolExecutor
> java.lang.NullPointerException: null
> at
> org.apache.cassandra.io.sstable.format.SSTableReader.getFilename(SSTableReader.java:697)
> ~[apache-cassandra-3.11.5.jar:3.11.5]
> at
> org.apache.cassandra.io.sstable.format.SSTableReader.open(SSTableReader.java:543)
> ~[apache-cassandra-3.11.5.jar:3.11.5]
> at
> org.apache.cassandra.io.sstable.format.SSTableReader.open(SSTableReader.java:385)
> ~[apache-cassandra-3.11.5.jar:3.11.5]
> at
> org.apache.cassandra.io.sstable.format.SSTableReader$3.run(SSTableReader.java:570)
> ~[apache-cassandra-3.11.5.jar:3.11.5]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> ~[na:1.8.0_232]
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> ~[na:1.8.0_232]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> ~[na:1.8.0_232]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> [na:1.8.0_232]
> at
> org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:84)
> [apache-cassandra-3.11.5.jar:3.11.5]
> at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_232]
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