[CASSANDRA-12103] Cassandra is hang and cqlsh was not able to login with OperationTimeout error

• Type: Bug
• Status: Resolved
• Priority: Urgent
• Resolution: Fixed
• Component/s: Legacy/Core, Legacy/Local Write-Read Paths

Environment

centos 6.5 cassandra 2.1.9

• Severity: Critical
• Since Version: 2.1.9
• Assignee: Unassigned
• Reporter: peng xiao
• Created: 28/Jun/16 16:04
• Updated: 16/Apr/19 09:30
• Resolved: 12/Dec/17 09:48

Description

Hi,
We have two DCs(DC1 and DC2) with DC1 3 nodes and DC2 9 nodes.
And we experienced a Timeout error today,all applications connected to DC1 were hang and no response,even cqlsh was not able to log into any node in DC1.
I restarted the 3 nodes in DC1,the problem was not resolved.
Then we switched to DC2,then applications back to normal.

Could you please help to take a look?

Thanks

many errors like below:

ERROR [SharedPool-Worker-43] 2016-06-28 11:58:49,705 Message.java:538 - Unexpected exception during request; channel = [id: 0x87e315d6, /172.16.10.198:13604 => /172.16.11.13:9042]
java.lang.RuntimeException: org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - received only 0 responses.
at org.apache.cassandra.auth.Auth.selectUser(Auth.java:276) ~[apache-cassandra-2.1.9.jar:2.1.9]
at org.apache.cassandra.auth.Auth.isExistingUser(Auth.java:86) ~[apache-cassandra-2.1.9.jar:2.1.9]
at org.apache.cassandra.service.ClientState.login(ClientState.java:206) ~[apache-cassandra-2.1.9.jar:2.1.9]
at org.apache.cassandra.transport.messages.AuthResponse.execute(AuthResponse.java:82) ~[apache-cassandra-2.1.9.jar:2.1.9]
at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:439) [apache-cassandra-2.1.9.jar:2.1.9]
at org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:335) [apache-cassandra-2.1.9.jar:2.1.9]
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [netty-all-4.0.23.Final.jar:4.0.23.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:333) [netty-all-4.0.23.Final.jar:4.0.23.Final]
at io.netty.channel.AbstractChannelHandlerContext.access$700(AbstractChannelHandlerContext.java:32) [netty-all-4.0.23.Final.jar:4.0.23.Final]
at io.netty.channel.AbstractChannelHandlerContext$8.run(AbstractChannelHandlerContext.java:324) [netty-all-4.0.23.Final.jar:4.0.23.Final]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0]
at org.apache.cassandra.concurrent.AbstractTracingAwareExecutorService$FutureTask.run(AbstractTracingAwareExecutorService.java:164) [apache-cassandra-2.1.9.jar:2.1.9]
at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:105) [apache-cassandra-2.1.9.jar:2.1.9]
at java.lang.Thread.run(Thread.java:744) [na:1.8.0]