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https://issues.apache.org/jira/browse/CASSANDRA-11744?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15342637#comment-15342637
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Peter Norton commented on CASSANDRA-11744:
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This happened again on 2.2.6 today.
> Trying to restart a 2.2.5 node, nodetool disablethrift fails
> ------------------------------------------------------------
>
> Key: CASSANDRA-11744
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11744
> Project: Cassandra
> Issue Type: Bug
> Reporter: Peter Norton
> Attachments: failure.jstack.out
>
>
> We have a 2.2.5 cluster running in AWS VPC with EBS volumes. Earlier today 3
> nodes seem to have gone into a bad state - clients were seeing high latencies
> when writing to these nodes, and the write to the commitlog on each of these
> nodes seemed high - more than the relatively low number of iops that AWS
> allocated to these volumes. While trying to understand the situation we
> attempted to restart the 3 nodes. We attempted to do a nodetool
> disablebinary; nodetool disablethrift; nodetool flush. and then stop the
> process.
> When trying to disablethrift, the following stack trace appeared in the
> system.log:
> ```
> INFO [RMI TCP Connection(8)-172.26.32.248] 2016-05-10 15:26:58,599
> Server.java:218 - Stop listening for CQL clients
> INFO [RMI TCP Connection(10)-172.26.32.248] 2016-05-10 15:27:01,975
> ThriftServer.java:142 - Stop listening to thrift clients
> ERROR [RPC-Thread:34] 2016-05-10 15:27:03,794 Message.java:324 - Unexpected
> throwable while invoking!
> java.lang.NullPointerException: null
> at com.thinkaurelius.thrift.util.mem.Buffer.size(Buffer.java:83)
> ~[thrift-server-0.3.7.jar:na]
> at
> com.thinkaurelius.thrift.util.mem.FastMemoryOutputTransport.expand(FastMemoryOutputTransport.java:84)
> ~[thrift-server-0.3.7.jar:na]
> at
> com.thinkaurelius.thrift.util.mem.FastMemoryOutputTransport.write(FastMemoryOutputTransport.java:167)
> ~[thrift-server-0.3.7.jar:na]
> at
> org.apache.thrift.transport.TFramedTransport.flush(TFramedTransport.java:156)
> ~[libthrift-0.9.2.jar:0.9.2]
> at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:55)
> ~[libthrift-0.9.2.jar:0.9.2]
> at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
> ~[libthrift-0.9.2.jar:0.9.2]
> at com.thinkaurelius.thrift.Message.invoke(Message.java:314)
> ~[thrift-server-0.3.7.jar:na]
> at
> com.thinkaurelius.thrift.Message$Invocation.execute(Message.java:90)
> [thrift-server-0.3.7.jar:na]
> at
> com.thinkaurelius.thrift.TDisruptorServer$InvocationHandler.onEvent(TDisruptorServer.java:695)
> [thrift-server-0.3.7.jar:na]
> at
> com.thinkaurelius.thrift.TDisruptorServer$InvocationHandler.onEvent(TDisruptorServer.java:689)
> [thrift-server-0.3.7.jar:na]
> at com.lmax.disruptor.WorkProcessor.run(WorkProcessor.java:112)
> [disruptor-3.0.1.jar:na]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [na:1.8.0_60]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [na:1.8.0_60]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_60]
> ```
> The attached jstack was taken from a node after the above was noticed.
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