Dear Emir,
Hi,
There are some cases that I have soft commit in my application. However,
the bulk update part has only hard commit for a bulk of 2500 documents.
Here are some information about the whole indexing/updating scenarios:
- Indexing part uses soft commit.
- In a single update cases soft commit is used.
- For bulk update batch hard commit is used (on 2500 documents)
- Auto hard commit :120 sec
- Auto soft commit: disable

Best regards.


On Tue, Dec 8, 2015 at 12:35 PM, Emir Arnautovic <
emir.arnauto...@sematext.com> wrote:

> Hi Ali,
> This thread is blocked because cannot obtain update lock - in this
> particular case when doing soft commit. I am guessing that there others are
> blocked for the same reason. Can you tell us bit more about your setup and
> indexing load and procedure? Do you do explicit commits?
>
> Regards,
> Emir
>
> --
> Monitoring * Alerting * Anomaly Detection * Centralized Log Management
> Solr & Elasticsearch Support * http://sematext.com/
>
>
>
> On 08.12.2015 08:16, Ali Nazemian wrote:
>
>> Hi,
>> There is a while since I have had problem with Solr 5.2.1 and I could not
>> fix it yet. The only think that is clear to me is when I send bulk update
>> to Solr the commit thread will be blocked! Here is the thread dump output:
>>
>> "qtp595445781-8207" prio=10 tid=0x00007f0bf68f5800 nid=0x5785 waiting for
>> monitor entry [0x00007f081cf04000]
>>     java.lang.Thread.State: BLOCKED (on object monitor)
>> at
>>
>> org.apache.solr.update.DirectUpdateHandler2.commit(DirectUpdateHandler2.java:608)
>> - waiting to lock <0x000000067ba2e660> (a java.lang.Object)
>> at
>>
>> org.apache.solr.update.processor.RunUpdateProcessor.processCommit(RunUpdateProcessorFactory.java:95)
>> at
>>
>> org.apache.solr.update.processor.UpdateRequestProcessor.processCommit(UpdateRequestProcessor.java:64)
>> at
>>
>> org.apache.solr.update.processor.DistributedUpdateProcessor.doLocalCommit(DistributedUpdateProcessor.java:1635)
>> at
>>
>> org.apache.solr.update.processor.DistributedUpdateProcessor.processCommit(DistributedUpdateProcessor.java:1612)
>> at
>>
>> org.apache.solr.update.processor.LogUpdateProcessor.processCommit(LogUpdateProcessorFactory.java:161)
>> at
>>
>> org.apache.solr.update.processor.UpdateRequestProcessor.processCommit(UpdateRequestProcessor.java:64)
>> at
>>
>> org.apache.solr.update.processor.UpdateRequestProcessor.processCommit(UpdateRequestProcessor.java:64)
>> at
>> org.apache.solr.handler.loader.XMLLoader.processUpdate(XMLLoader.java:270)
>> at org.apache.solr.handler.loader.XMLLoader.load(XMLLoader.java:177)
>> at
>>
>> org.apache.solr.handler.UpdateRequestHandler$1.load(UpdateRequestHandler.java:98)
>> at
>>
>> org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:74)
>> at
>>
>> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:143)
>> at org.apache.solr.core.SolrCore.execute(SolrCore.java:2064)
>> at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654)
>> at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:450)
>> at
>>
>> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:227)
>> at
>>
>> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:196)
>> at
>>
>> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
>> at
>> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
>> at
>>
>> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
>> at
>>
>> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
>> at
>>
>> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
>> at
>>
>> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
>> at
>> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
>> at
>>
>> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
>> at
>>
>> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
>> at
>>
>> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
>> at
>>
>> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
>> at
>>
>> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
>> at
>>
>> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
>> at org.eclipse.jetty.server.Server.handle(Server.java:497)
>> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
>> at
>>
>> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
>> at
>> org.eclipse.jetty.io
>> .AbstractConnection$2.run(AbstractConnection.java:540)
>> at
>>
>> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
>> at
>>
>> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
>> at java.lang.Thread.run(Thread.java:745)
>>
>>     Locked ownable synchronizers:
>> - None
>>
>> FYI there are lots of blocked thread in thread dump report and Solr
>> becomes
>> really slow in this case. The temporary solution would be restarting Solr.
>> But, I am really sick of restarting! I really appreciate if somebody can
>> help me to solve this problem?
>>
>> Best regards.
>>
>>


-- 
A.Nazemian

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