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From "Gesty, Jim" <jge...@cscinfo.com>
Subject SEVERE:IOException occured when talking to server
Date Wed, 15 May 2013 14:24:04 GMT
We have a simple SolrCloud setup (4.1) running with a single shard and
multiple replicas across 3 servers, and it's working fine except once in a while,
the leader logs this error. We fine-tuned GC among other things and everything is lightning
fast. However, we still receive this SEVERE error a few times a day.


15-May-2013 08:38:36.701 SEVERE [tomcat-http--6] org.apache.solr.common.SolrException.log
shard update error StdNode: http://10.10.4.118:11280/solr/core1/:org.apache.solr.client.solrj.SolrServerException:
IOException occured when talking to server at: http://10.10.4.118:11280/solr/core1
                at org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:416)
                at org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:181)
                at org.apache.solr.update.SolrCmdDistributor$1.call(SolrCmdDistributor.java:332)
                at org.apache.solr.update.SolrCmdDistributor$1.call(SolrCmdDistributor.java:306)
                at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
                at java.util.concurrent.FutureTask.run(FutureTask.java:166)
                at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
                at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
                at java.util.concurrent.FutureTask.run(FutureTask.java:166)
                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
                at java.lang.Thread.run(Thread.java:722)
Caused by: org.apache.http.NoHttpResponseException: The target server failed to respond
                at org.apache.http.impl.conn.DefaultResponseParser.parseHead(DefaultResponseParser.java:101)
                at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:252)
                at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:282)
                at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:247)
                at org.apache.http.impl.conn.AbstractClientConnAdapter.receiveResponseHeader(AbstractClientConnAdapter.java:216)
                at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:298)
                at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
                at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:647)
                at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:464)
                at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
                at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
                at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:732)
                at org.apache.solr.client.solrj.impl.HttpSolrServer.request(HttpSolrServer.java:353)
                ... 11 more

15-May-2013 08:38:36.706 INFO [tomcat-http--6] org.apache.solr.update.processor.DistributedUpdateProcessor.doFinish
try and ask http://10.10.4.118:11280/solr to recover
15-May-2013 08:38:36.706 INFO [tomcat-http--6] org.apache.solr.client.solrj.impl.HttpClientUtil.createClient
Creating new http client, config:maxConnections=128&maxConnectionsPerHost

Any ideas on what the root cause of this issue may be and how we can remediate it?

J

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