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https://issues.apache.org/jira/browse/CASSANDRA-14472?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
C. Scott Andreas resolved CASSANDRA-14472.
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Resolution: Information Provided
> Too many LEAK DETECTED errors in the logs.
> ------------------------------------------
>
> Key: CASSANDRA-14472
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14472
> Project: Cassandra
> Issue Type: Bug
> Reporter: venky
> Priority: Major
>
> We are seeing too many leak detected errors in the system log (Cassandra
> 3.11.0 & dse (5.1.2).
> ```
> ERROR [Reference-Reaper:1] 2018-05-28 21:59:42,783 Ref.java:224 - LEAK
> DETECTED: a reference
> (org.apache.cassandra.utils.concurrent.Ref$State@733e48f6) to class
> org.apache.cassandra.io.util.SafeMemory$MemoryTidy@1977222631:Memory@[7dda86406000..7dda86596000)
> was not released before the reference was garbage collected
>
>
>
>
> ERROR [Reference-Reaper:1] 2018-05-28 22:02:13,183 Ref.java:224 - LEAK
> DETECTED: a reference
> (org.apache.cassandra.utils.concurrent.Ref$State@463fffb6) to class
> org.apache.cassandra.io.util.FileHandle$Cleanup@304923348:/app/db/data2/odp_raw/rolling_device_usage_hour-4afe7060339611e897fbafb645229968/mc-152546-big-Index.db
> was not released before the reference was garbage collected
> ERROR [Reference-Reaper:1] 2018-05-28 22:02:13,183 Ref.java:224 - LEAK
> DETECTED: a reference
> (org.apache.cassandra.utils.concurrent.Ref$State@3071c683) to class
> org.apache.cassandra.io.util.SafeMemory$MemoryTidy@847483493:Memory@[7dda8d406000..7dda8d596000)
> was not released before the reference was garbage collected
> ERROR [Reference-Reaper:1] 2018-05-28 22:02:13,183 Ref.java:224 - LEAK
> DETECTED: a reference
> (org.apache.cassandra.utils.concurrent.Ref$State@bf809cc) to class
> org.apache.cassandra.utils.concurrent.WrappedSharedCloseable$Tidy@2142654469:[Memory@[0..84),
> Memory@[0..528)] was not released before the reference was garbage collected
> ```
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