Re: Solr Sudden I/O spike

[kshitij tyagi <ks...@gmail.com>]

Hi,

Can you checck and update if there is any indexing going on the core or a
merge or an optimise triggered on the same. There might be an instance of
high IO in case any bacckgroung merging triggers while serving query
requests.

Regards,
kshitij

On Fri, Jun 14, 2019 at 5:23 PM Sripra deep <sr...@madstreetden.com>
wrote:

> Hi,
>   Any help would be appreciated, I am using solr 7.1.0, Suddenly we got a
> high I/O even with a very low request rate and the core went down. Did
> anybody experience the same or root cause of this.
>
> Below are the log error msg that we got from solr.log
>
> 2019-06-06 10:37:14.490 INFO  (qtp761960786-8618) [   ]
> o.a.s.s.HttpSolrCall Unable to write response, client closed connection or
> we are shutting down
> org.eclipse.jetty.io.EofException
>     at org.eclipse.jetty.io
> .ChannelEndPoint.flush(ChannelEndPoint.java:199)
>     at org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:420)
>     at
> org.eclipse.jetty.io.WriteFlusher.completeWrite(WriteFlusher.java:375)
>     at
> org.eclipse.jetty.io
> .SelectChannelEndPoint$3.run(SelectChannelEndPoint.java:107)
>     at
> org.eclipse.jetty.io
> .SelectChannelEndPoint.onSelected(SelectChannelEndPoint.java:193)
>     at
> org.eclipse.jetty.io
> .ManagedSelector$SelectorProducer.processSelected(ManagedSelector.java:283)
>     at
> org.eclipse.jetty.io
> .ManagedSelector$SelectorProducer.produce(ManagedSelector.java:181)
>     at
>
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceExecuteConsume(ExecuteProduceConsume.java:169)
>     at
>
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:145)
>     at
>
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
>     at
>
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
>     at
>
> org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
>     at java.lang.Thread.run(Thread.java:748)
> Caused by: java.io.IOException: Broken pipe
>     at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
>     at sun.nio.ch.SocketDispatcher.write(SocketDispatcher.java:47)
>     at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
>     at sun.nio.ch.IOUtil.write(IOUtil.java:51)
>     at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:471)
>     at org.eclipse.jetty.io
> .ChannelEndPoint.flush(ChannelEndPoint.java:177)
>     ... 12 more
> Thanks,
> Sripradeep P
>