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https://issues.apache.org/jira/browse/SOLR-7177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14345340#comment-14345340
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Mark Miller commented on SOLR-7177:
-----------------------------------
bq. Adding this info at this class will also benefit all the end users who are
directly using solrj api to talk with Solr service.
In that case you know the URL - you had to init the class with it and this is
part of your client code. You can log whatever you want if the call fails on
the client side.
> ConcurrentUpdateSolrClient should log connection information on http failures
> ------------------------------------------------------------------------------
>
> Key: SOLR-7177
> URL: https://issues.apache.org/jira/browse/SOLR-7177
> Project: Solr
> Issue Type: Improvement
> Affects Versions: 4.10.3, 5.0
> Reporter: Vamsee Yarlagadda
> Priority: Minor
> Attachments: SOLR-7177.patch, SOLR-7177v2.patch
>
>
> I notice when there is an http connection failure, we simply log the error
> but not the connection information. It would be good to log this info to make
> debugging easier.
> e.g:
> 1.
> {code}
> 2015-02-27 08:56:51,503 ERROR org.apache.solr.update.StreamingSolrServers:
> error
> java.net.SocketException: Connection reset
> at java.net.SocketInputStream.read(SocketInputStream.java:196)
> at java.net.SocketInputStream.read(SocketInputStream.java:122)
> at
> org.apache.http.impl.io.AbstractSessionInputBuffer.fillBuffer(AbstractSessionInputBuffer.java:166)
> at
> org.apache.http.impl.io.SocketInputBuffer.fillBuffer(SocketInputBuffer.java:90)
> at
> org.apache.http.impl.io.AbstractSessionInputBuffer.readLine(AbstractSessionInputBuffer.java:281)
> at
> org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:92)
> at
> org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:62)
> at
> org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:254)
> at
> org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:289)
> at
> org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:252)
> at
> org.apache.http.impl.conn.ManagedClientConnectionImpl.receiveResponseHeader(ManagedClientConnectionImpl.java:191)
> at
> org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:300)
> at
> org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:127)
> at
> org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:715)
> at
> org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:520)
> at
> org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
> at
> org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
> at
> org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784)
> at
> org.apache.solr.client.solrj.impl.ConcurrentUpdateSolrServer$Runner.run(ConcurrentUpdateSolrServer.java:235)
> {code}
>
> 2.
> {code}
> 2015-02-27 10:26:12,363 ERROR org.apache.solr.update.StreamingSolrServers:
> error
> org.apache.http.NoHttpResponseException: The target server failed to respond
> at
> org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:95)
> at
> org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:62)
> at
> org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:254)
> at
> org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:289)
> at
> org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:252)
> at
> org.apache.http.impl.conn.ManagedClientConnectionImpl.receiveResponseHeader(ManagedClientConnectionImpl.java:191)
> at
> org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:300)
> at
> org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:127)
> at
> org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:715)
> at
> org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:520)
> at
> org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
> at
> org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805)
> at
> org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784)
> at
> org.apache.solr.client.solrj.impl.ConcurrentUpdateSolrServer$Runner.run(ConcurrentUpdateSolrServer.java:235)
> 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:745)
> {code}
> As we can notice, we can see the exception but we don't have any information
> around which server is the end point.
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