Lindsay Martin created SOLR-6983:
------------------------------------
Summary: SocketExceptions no longer trigger retries when
processing distributed updates
Key: SOLR-6983
URL: https://issues.apache.org/jira/browse/SOLR-6983
Project: Solr
Issue Type: Bug
Components: SolrCloud
Affects Versions: 4.7
Reporter: Lindsay Martin
Our production Solr cluster is frequently placing replicas into
leader-initiated recovery whenever a "java.net.SocketException: Connection
reset" is thrown when processing distributed updates.
This problem surfaced after upgrading from Solr 4.6.1 to Solr 4.10.2. In the
old version, a retry was attempted whenever a SocketException was encountered
when a leader was updating a replica. After the upgrade to Solr 4.10.2, this
retry mechanism no longer occurs.
Here is an example stacktrace:
{noformat}
2015-01-11 09:38:00.913 [updateExecutor-1-thread-35734] 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:160)
at
org.apache.http.impl.io.SocketInputBuffer.fillBuffer(SocketInputBuffer.java:84)
at
org.apache.http.impl.io.AbstractSessionInputBuffer.readLine(AbstractSessionInputBuffer.java:273)
at
org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:140)
at
org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57)
at
org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:260)
at
org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:283)
at
org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:251)
at
org.apache.http.impl.conn.ManagedClientConnectionImpl.receiveResponseHeader(ManagedClientConnectionImpl.java:197)
at
org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:271)
at
org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123)
at
org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:682)
at
org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:486)
at
org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
at
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106)
at
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
at
org.apache.solr.client.solrj.impl.ConcurrentUpdateSolrServer$Runner.run(ConcurrentUpdateSolrServer.java:233)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
2015-01-11 09:38:00.917 [qtp268575911-3616964] WARN
org.apache.solr.update.processor.DistributedUpdateProcessor – Error sending
update
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:160)
at
org.apache.http.impl.io.SocketInputBuffer.fillBuffer(SocketInputBuffer.java:84)
at
org.apache.http.impl.io.AbstractSessionInputBuffer.readLine(AbstractSessionInputBuffer.java:273)
at
org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:140)
at
org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57)
at
org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:260)
at
org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:283)
at
org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:251)
at
org.apache.http.impl.conn.ManagedClientConnectionImpl.receiveResponseHeader(ManagedClientConnectionImpl.java:197)
at
org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:271)
at
org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123)
at
org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:682)
at
org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:486)
at
org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
at
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106)
at
org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
at
org.apache.solr.client.solrj.impl.ConcurrentUpdateSolrServer$Runner.run(ConcurrentUpdateSolrServer.java:233)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
2015-01-11 09:38:00.958 [qtp268575911-3616964] ERROR
org.apache.solr.update.processor.DistributedUpdateProcessor – Setting up to
try to start recovery on replica http://solr26:8983/solr/listings/ after:
java.net.SocketException: Connection reset
{noformat}
The underlying SocketException may be related to
[SOLR-6931|https://issues.apache.org/jira/browse/SOLR-6931] and the disabling
of the HttpClient stale connection check.
It appears that the retry logic was removed from the SolrCommandDistributor
starting with 4.7 to address
[SOLR-5509|https://issues.apache.org/jira/browse/SOLR-5509]. See
https://svn.apache.org/viewvc/lucene/dev/trunk/solr/core/src/java/org/apache/solr/update/SolrCmdDistributor.java?r1=1546672&r2=1546164&pathrev=1546672
Is there any way the retry logic could be restored for Solr 4.10.x ?
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