David created CASSANDRA-14867:
---------------------------------

             Summary: Histogram overflows potentially leading to writes failing
                 Key: CASSANDRA-14867
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14867
             Project: Cassandra
          Issue Type: Bug
          Components: Streaming and Messaging
         Environment: cassandra 3.11.1 on ubuntu 16.04
            Reporter: David


I observed the following in cassandra logs on 1 host of a 6-node cluster:

ERROR [ScheduledTasks:1] 2018-11-01 17:26:41,277 CassandraDaemon.java:228 - 
Exception in thread Thread[ScheduledTasks:1,5,main]
java.lang.IllegalStateException: Unable to compute when histogram overflowed
 at 
org.apache.cassandra.metrics.DecayingEstimatedHistogramReservoir$EstimatedHistogramReservoirSnapshot.getMean(DecayingEstimatedHistogramReservoir.java:472)
 ~[apache-cassandra-3.11.1.jar:3.11.1]
 at 
org.apache.cassandra.net.MessagingService.getDroppedMessagesLogs(MessagingService.java:1263)
 ~[apache-cassandra-3.11.1.jar:3.11.1]
 at 
org.apache.cassandra.net.MessagingService.logDroppedMessages(MessagingService.java:1236)
 ~[apache-cassandra-3.11.1.jar:3.11.1]
 at 
org.apache.cassandra.net.MessagingService.access$200(MessagingService.java:87) 
~[apache-cassandra-3.11.1.jar:3.11.1]
 at org.apache.cassandra.net.MessagingService$4.run(MessagingService.java:507) 
~[apache-cassandra-3.11.1.jar:3.11.1]
 at 
org.apache.cassandra.concurrent.DebuggableScheduledThreadPoolExecutor$UncomplainingRunnable.run(DebuggableScheduledThreadPoolExecutor.java:118)
 ~[apache-cassandra-3.11.1.jar:3.11.1]
 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
[na:1.8.0_172]
 at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) 
[na:1.8.0_172]
 at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
 [na:1.8.0_172]
 at 
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
 [na:1.8.0_172]
 at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) 
[na:1.8.0_172]
 at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) 
[na:1.8.0_172]
 at 
org.apache.cassandra.concurrent.NamedThreadFactory.lambda$threadLocalDeallocator$0(NamedThreadFactory.java:81)
 [apache-cassandra-3.11.1.jar:3.11.1]
 at java.lang.Thread.run(Thread.java:748) ~[na:1.8.0_172]

 

At the same time, this node was failing all writes issued to it. Restarting 
cassandra on the node brought the cluster into a good state and we stopped 
seeing the histogram overflow errors.

Has this issue been observed before? Could the histogram overflows cause writes 
to fail?



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