Tomcat problem, or a Solr problem that is only manifesting on your platform, or a JVM or libc problem, or even a client update problem... (possibly you might be exhausting the number of sockets in the server by using persistent connections with a long timeout and never reusing them?)
What is your OS/JVM? -Yonik On 7/26/06, sangraal aiken <[EMAIL PROTECTED]> wrote:
Right now the heap is set to 512M but I've increased it up to 2GB and yet it still hangs at the same number 6,144... Here's something interesting... I pushed this code over to a different server and tried an update. On that server it's hanging on #5,267. Then tomcat seems to try to reload the webapp... indefinitely. So I guess this is looking more like a tomcat problem more than a lucene/solr problem huh? -Sangraal On 7/26/06, Yonik Seeley <[EMAIL PROTECTED]> wrote: > > So it looks like your client is hanging trying to send somethig over > the socket to the server and blocking... probably because Tomcat isn't > reading anything from the socket because it's busy trying to restart > the webapp. > > What is the heap size of the server? try increasing it... maybe tomcat > could have detected low memory and tried to reload the webapp. > > -Yonik > > On 7/26/06, sangraal aiken <[EMAIL PROTECTED]> wrote: > > Thanks for you help Yonik, I've responded to your questions below: > > > > On 7/26/06, Yonik Seeley <[EMAIL PROTECTED]> wrote: > > > > > > It's possible it's not hanging, but just takes a long time on a > > > specific add. This is because Lucene will occasionally merge > > > segments. When very large segments are merged, it can take a long > > > time. > > > > > > I've left it running (hung) for up to a half hour at a time and I've > > verified that my cpu idles during the hang. I have witnessed much > shorter > > hangs on the ramp up to my 6,144 limit but they have been more like 2 - > 10 > > seconds in length. Perhaps this is the Lucene merging you mentioned. > > > > In the log file, add commands are followed by the number of > > > milliseconds the operation took. Next time Solr hangs, wait for a > > > number of minutes until you see the operation logged and note how long > > > it took. > > > > > > Here are the last 5 log entries before the hang the last one is doc > #6,144. > > Also it looks like Tomcat is trying to redeploy the webapp those last > tomcat > > entries repeat indefinitely every 10 seconds or so. Perhaps this is a > Tomcat > > problem? > > > > Jul 26, 2006 1:25:28 PM org.apache.solr.core.SolrCore update > > INFO: add (id=110705) 0 36596 > > Jul 26, 2006 1:25:28 PM org.apache.solr.core.SolrCore update > > INFO: add (id=110700) 0 36600 > > Jul 26, 2006 1:25:28 PM org.apache.solr.core.SolrCore update > > INFO: add (id=110688) 0 36603 > > Jul 26, 2006 1:25:28 PM org.apache.solr.core.SolrCore update > > INFO: add (id=110690) 0 36608 > > Jul 26, 2006 1:25:28 PM org.apache.solr.core.SolrCore update > > INFO: add (id=110686) 0 36611 > > Jul 26, 2006 1:25:36 PM > org.apache.catalina.startup.HostConfigcheckResources > > FINE: Checking context[] redeploy resource /source/solr/apache- > tomcat-5.5.17 > > /webapps/ROOT > > Jul 26, 2006 1:25:36 PM > org.apache.catalina.startup.HostConfigcheckResources > > FINE: Checking context[] redeploy resource /source/solr/apache- > tomcat-5.5.17 > > /webapps/ROOT/META-INF/context.xml > > Jul 26, 2006 1:25:36 PM > org.apache.catalina.startup.HostConfigcheckResources > > FINE: Checking context[] reload resource /source/solr/apache- > tomcat-5.5.17 > > /webapps/ROOT/WEB-INF/web.xml > > Jul 26, 2006 1:25:36 PM > org.apache.catalina.startup.HostConfigcheckResources > > FINE: Checking context[] reload resource /source/solr/apache- > tomcat-5.5.17 > > /webapps/ROOT/META-INF/context.xml > > Jul 26, 2006 1:25:36 PM > org.apache.catalina.startup.HostConfigcheckResources > > FINE: Checking context[] reload resource /source/solr/apache- > tomcat-5.5.17 > > /conf/context.xml > > > > How many documents are in the index before you do a batch that causes > > > a hang? Does it happen on the first batch? If so, you might be > > > seeing some other bug. What appserver are you using? Do the admin > > > pages respond when you see this hang? If so, what does a stack trace > > > look like? > > > > > > I actually don't think I had the problem on the first batch, in fact my > > first batch contained very close to 6,144 documents so perhaps there is > a > > relation there. Right now, I'm adding to an index with close to 90,000 > > documents in it. > > I'm running Tomcat 5.5.17 and the admin pages respond just fine when > it's > > hung... I did a thread dump and this is the trace of my update: > > > > "http-8080-Processor25" Id=33 in RUNNABLE (running in native) total cpu > > time=6330.7360ms user time=5769.5920ms > > at java.net.SocketOutputStream.socketWrite0(Native Method) > > at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java > :92) > > at java.net.SocketOutputStream.write(SocketOutputStream.java:136) > > at java.io.BufferedOutputStream.write(BufferedOutputStream.java > :105) > > at java.io.PrintStream.write(PrintStream.java:412) > > at java.io.ByteArrayOutputStream.writeTo(ByteArrayOutputStream.java > > :112) > > at sun.net.www.http.HttpClient.writeRequests(HttpClient.java:533) > > at sun.net.www.protocol.http.HttpURLConnection.writeRequests( > > HttpURLConnection.java:410) > > at sun.net.www.protocol.http.HttpURLConnection.getInputStream( > > HttpURLConnection.java:934) > > at com.gawker.solr.update.GanjaUpdate.doUpdate(GanjaUpdate.java > :169) > > at com.gawker.solr.update.GanjaUpdate.update(GanjaUpdate.java:62) > > at org.apache.jsp.update_jsp._jspService(update_jsp.java:57) > > at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java > :97) > > at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > > at org.apache.jasper.servlet.JspServletWrapper.service( > > JspServletWrapper.java:332) > > at org.apache.jasper.servlet.JspServlet.serviceJspFile( > JspServlet.java > > :314) > > at org.apache.jasper.servlet.JspServlet.service(JspServlet.java > :264) > > at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) > > at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter > ( > > ApplicationFilterChain.java:252) > > at org.apache.catalina.core.ApplicationFilterChain.doFilter( > > ApplicationFilterChain.java:173) > > at org.apache.catalina.core.StandardWrapperValve.invoke( > > StandardWrapperValve.java:213) > > at org.apache.catalina.core.StandardContextValve.invoke( > > StandardContextValve.java:178) > > at org.apache.catalina.core.StandardHostValve.invoke( > > StandardHostValve.java:126) > > at org.apache.catalina.valves.ErrorReportValve.invoke( > > ErrorReportValve.java:105) > > at org.apache.catalina.core.StandardEngineValve.invoke( > > StandardEngineValve.java:107) > > at org.apache.catalina.connector.CoyoteAdapter.service( > > CoyoteAdapter.java:148) > > at org.apache.coyote.http11.Http11Processor.process( > > Http11Processor.java:869) > > at > > > org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection > > (Http11BaseProtocol.java:664) > > at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket( > > PoolTcpEndpoint.java:527) > > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt( > > LeaderFollowerWorkerThread.java:80) > > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run( > > ThreadPool.java:684) > > at java.lang.Thread.run(Thread.java:613) > > > > > > -Yonik > > > > > > > > > On 7/26/06, sangraal aiken <[EMAIL PROTECTED]> wrote: > > > > Hey there... I'm having an issue with large doc updates on my solr > > > > installation. I'm adding in batches between 2-20,000 docs at a time > and > > > I've > > > > noticed Solr seems to hang at 6,144 docs every time. Breaking the > adds > > > into > > > > smaller batches works just fine, but I was wondering if anyone knew > why > > > this > > > > would happen. I've tried doubling memory as well as tweaking various > > > config > > > > options but nothing seems to let me break the 6,144 barrier. > > > > > > > > This is the output from Solr admin. Any help would be greatly > > > appreciated. > > > > > > > > > > > > *name: * updateHandler *class: * > > > > org.apache.solr.update.DirectUpdateHandler2 *version: * 1.0 > > > *description: > > > > * Update handler that efficiently directly updates the on-disk main > > > lucene > > > > index *stats: *commits : 0 > > > > optimizes : 0 > > > > docsPending : 6144 > > > > deletesPending : 6144 > > > > adds : 6144 > > > > deletesById : 0 > > > > deletesByQuery : 0 > > > > errors : 0 > > > > cumulative_adds : 6144 > > > > cumulative_deletesById : 0 > > > > cumulative_deletesByQuery : 0 > > > > cumulative_errors : 0 > > > > docsDeleted : 0
