Discuss the Elastic Stack

{New I/O client boss #1-0}) Unexpected exception in the selector loop

Elastic Stack Elasticsearch

Muzy (Muzy) January 10, 2013, 5:30am 1

I am getting some warning in my servers. Like the one which I specified
below. I just want to know why I am getting these warn and what is
the remedy to recover from it. Does these warn cause any problem?

[appuser@greatauk bin]$ [Server:slave-three] 17:10:56,387 WARN
[netty.channel.socket.nio.NioClientSocketPipelineSink] (elasticsearch[Madam
Slay][transport_client_boss][T#1]{New I/O client boss #1-0}) Unexpected
exception in the selector loop.: java.nio.channels.CancelledKeyException

[Server:slave-three] at
sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)
[rt.jar:1.6.0_22]

[Server:slave-three] at
sun.nio.ch.SelectionKeyImpl.readyOps(SelectionKeyImpl.java:87)
[rt.jar:1.6.0_22]

[Server:slave-three] at
java.nio.channels.SelectionKey.isConnectable(SelectionKey.java:336)
[rt.jar:1.6.0_22]

[Server:slave-three] at
org.elasticsearch.common.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processSelectedKeys(NioClientSocketPipelineSink.java:365)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
org.elasticsearch.common.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:282)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:102)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
org.elasticsearch.common.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
[rt.jar:1.6.0_22]

[Server:slave-three] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
[rt.jar:1.6.0_22]

[Server:slave-three] at java.lang.Thread.run(Thread.java:679)
[rt.jar:1.6.0_22]

[Server:slave-three]

[Server:slave-three] 17:12:36,426 WARN
[netty.channel.socket.nio.NioClientSocketPipelineSink] (elasticsearch[Madam
Slay][transport_client_boss][T#1]{New I/O client boss #1-0}) Unexpected
exception in the selector loop.: java.nio.channels.CancelledKeyException

[Server:slave-three] at
sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)
[rt.jar:1.6.0_22]

[Server:slave-three] at
sun.nio.ch.SelectionKeyImpl.readyOps(SelectionKeyImpl.java:87)
[rt.jar:1.6.0_22]

[Server:slave-three] at
java.nio.channels.SelectionKey.isConnectable(SelectionKey.java:336)
[rt.jar:1.6.0_22]

[Server:slave-three] at
org.elasticsearch.common.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processSelectedKeys(NioClientSocketPipelineSink.java:365)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
org.elasticsearch.common.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:282)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:102)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
org.elasticsearch.common.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
[rt.jar:1.6.0_22]

[Server:slave-three] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
[rt.jar:1.6.0_22]

[Server:slave-three] at java.lang.Thread.run(Thread.java:679)
[rt.jar:1.6.0_22]

--

Igor_Motov (Igor Motov) January 14, 2013, 11:12pm 2

You are probably hitting this
issue https://issues.jboss.org/browse/NETTY-444 . Judging from the error
that you posted, you are running quite old version of java. I would suggest
upgrading to a newer version. It will improve performance and stability and
this error might also disappear.

On Thursday, January 10, 2013 12:30:54 AM UTC-5, Muzy wrote:

I am getting some warning in my servers. Like the one which I specified
below. I just want to know why I am getting these warn and what is
the remedy to recover from it. Does these warn cause any problem?

[appuser@greatauk bin]$ [Server:slave-three] 17:10:56,387 WARN
[netty.channel.socket.nio.NioClientSocketPipelineSink] (elasticsearch[Madam
Slay][transport_client_boss][T#1]{New I/O client boss #1-0}) Unexpected
exception in the selector loop.: java.nio.channels.CancelledKeyException

[Server:slave-three] at
sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)
[rt.jar:1.6.0_22]

[Server:slave-three] at
sun.nio.ch.SelectionKeyImpl.readyOps(SelectionKeyImpl.java:87)
[rt.jar:1.6.0_22]

[Server:slave-three] at
java.nio.channels.SelectionKey.isConnectable(SelectionKey.java:336)
[rt.jar:1.6.0_22]

[Server:slave-three] at
org.elasticsearch.common.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processSelectedKeys(NioClientSocketPipelineSink.java:365)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
org.elasticsearch.common.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:282)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:102)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
org.elasticsearch.common.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
[rt.jar:1.6.0_22]

[Server:slave-three] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
[rt.jar:1.6.0_22]

[Server:slave-three] at java.lang.Thread.run(Thread.java:679)
[rt.jar:1.6.0_22]

[Server:slave-three]

[Server:slave-three] 17:12:36,426 WARN
[netty.channel.socket.nio.NioClientSocketPipelineSink] (elasticsearch[Madam
Slay][transport_client_boss][T#1]{New I/O client boss #1-0}) Unexpected
exception in the selector loop.: java.nio.channels.CancelledKeyException

[Server:slave-three] at
sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73)
[rt.jar:1.6.0_22]

[Server:slave-three] at
sun.nio.ch.SelectionKeyImpl.readyOps(SelectionKeyImpl.java:87)
[rt.jar:1.6.0_22]

[Server:slave-three] at
java.nio.channels.SelectionKey.isConnectable(SelectionKey.java:336)
[rt.jar:1.6.0_22]

[Server:slave-three] at
org.elasticsearch.common.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.processSelectedKeys(NioClientSocketPipelineSink.java:365)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
org.elasticsearch.common.netty.channel.socket.nio.NioClientSocketPipelineSink$Boss.run(NioClientSocketPipelineSink.java:282)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
org.elasticsearch.common.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:102)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
org.elasticsearch.common.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
[elasticsearch-0.19.9.jar:]

[Server:slave-three] at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
[rt.jar:1.6.0_22]

[Server:slave-three] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
[rt.jar:1.6.0_22]

[Server:slave-three] at java.lang.Thread.run(Thread.java:679)
[rt.jar:1.6.0_22]

--

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