Sharid, As far as I know Lvg at 2012 year or so fix issue which prevent it running in multithreaded environment. That's one of the reasons why I update to latest LVG. BTW: Did you able to upgrade to LVG 2017 based on my comments, or you need more direct steps ?
Thanks, Andrey 3 Фев 2017 г. 23:19 пользователь "shahid ashraf" <sha...@trialx.com> написал: > Also this is the uima doc link which i implemented ... but did not work > > https://uima.apache.org/d/uimaj-current/tutorials_and_users_ > guides.html#ugr.tug.applications.multi_threaded > > On Fri, Feb 3, 2017 at 10:47 PM, shahid ashraf <sha...@trialx.com> wrote: > > > Thanks Peter > > > > I had implemented the JCAS pool from uima in the servlet as well , which > > gives same error when servlet is accessed parallel, seems as there is > some > > resources which gets blocked ... which are used by the annotators > possibly > > LVG/POSTAGGER. As servlet threads try to access the same resources > > /pipeline instantiated. the demo sevlet creates the pipleline /AE whilie > > initializing. > > > > Here is the CAS pool thing which UIMA docs suggest for multi processing. > > > > pipeline = aggregateBuilder.createAggregate(); > > > > jc = new JCasPool(5, pipeline); > > > > int s = jc.getSize(); > > > > > > doPost{ > > > > JCas jcas = jc.getJCas(0); > > > > jcas.setDocumentText(text); > > > > pipeline.process(jcas); > > > > } > > > > Yes i also thing to create a object pool for AEs i.e instantiate multiple > > AE pipeline objects in init servlet method ... dopost will use the object > > from that pool. If you some code snippet, kindly share (newbie to ctakes > > and java as well :)) > > > > On Fri, Feb 3, 2017 at 10:24 PM, Abramowitsch, Peter < > > pabramowit...@hearst.com> wrote: > > > >> I've had some experience pipelining ctakes behind a servlet (not the > demo > >> servlet) and, without going deep into the code, My feeling is that > there > >> are no globally static data resources with instance level content. It's > >> all just configuration and dictionaries. Threading errors would only > >> occur if threads shared a CAS object. Or if one thread was trying to > >> modify the configuration that another thread was using. > >> > >> If you're looking for high performance, I would keep a small pool of > >> instantiated CAS objects with their Annotators loaded. Then as each > >> request comes in via a different thread, you grab a CAS off the pool, > call > >> reset on it to clean out all the annotations and then run the annotation > >> process, output put the contents and hand it back to the pool. > Obviously > >> entrance and exit to the pool resources would have to be guarded by > >> semaphores or another thread safe mechanism. > >> > >> - Peter > >> > >> > >> On 2/2/17, 1:47 PM, "shahid ashraf" <sha...@trialx.com> wrote: > >> > >> >Thanks sean.. > >> > > >> >Seems it might have issue with thread safety of ctakes modules... > mainly > >> >postagger. i too am guessing :P > >> > > >> > > >> >On Fri, Feb 3, 2017 at 2:46 AM, Finan, Sean < > >> >sean.fi...@childrens.harvard.edu> wrote: > >> > > >> >> Hi Shahid, > >> >> > >> >> > >> >> > >> >> Just fyi, That client app is not part of ctakes or supported by the > >> >> general ctakes community. My initial guess would be that it ran out > of > >> >> memory or had an empty or unreadable document. Again, this is a > >> >>complete > >> >> shot in the dark as I don¹t use that servlet and the error report has > >> >> nothing specific with regard to ctakes. > >> >> > >> >> > >> >> > >> >> Sean > >> >> > >> >> > >> >> > >> >> *From:* shahid ashraf [mailto:sha...@trialx.com] > >> >> *Sent:* Thursday, February 02, 2017 8:37 AM > >> >> *To:* Finan, Sean; dev@ctakes.apache.org; Andrey Kurdumov; > >> >> masanz.ja...@gmail.com > >> >> *Subject:* Annotator processing failed > >> >> > >> >> > >> >> > >> >> I am using ctakes examples java servlet from here > >> >>https://urldefense.proofpoint.com/v2/url?u=http-3A__ > >> healthnlp.github&d=Dw > >> >>IFaQ&c=B73tqXN8Ec0ocRmZHMCntw&r=5LM1YwNyMUq7CWiSepCCsjTjwu > >> VF4uswNF8BK5Orm > >> >>10&m=n62PXSo5vUbtPKgTOb6r9eHOKo1b0coTcSA0ZvIfOvc&s=yxBTEl4 > >> n0E2IfwyzT99vkS > >> >>KjRtANaj73OXm5RPPgVqw&e= . > >> >> io/examples/ > >> >> > >> >><https://urldefense.proofpoint.com/v2/url?u=http-3A__ > >> healthnlp.github.io_ > >> >>examples_&d=DwMFaQ&c=qS4goWBT7poplM69zy_3xhKwEW14JZMSdioCo > >> ppxeFU&r=fs67Gv > >> >>lGZstTpyIisCYNYmQCP6r0bcpKGd4f7d4gTao&m=-pS4a8HsJtgy3fXJt8 > >> JmXdvd3X9gG3l5U > >> >>R-hkoRDG0A&s=qaWZ-ReKaj42RMRONEYR2tHoDSKM2KFJT9DyzNdzNi4&e=> > >> >> > >> >> After processing some documents maybe 1000+ it gets this error > >> >> > >> >> javax.servlet.ServletException: > >> >>org.apache.uima.analysis_engine.AnalysisEngineProcessException: > >> >>Annotator processing failed. > >> >> > >> >> > >> >>org.apache.ctakes.web.client.servlet.DemoServlet.doPost( > >> DemoServlet.java: > >> >>103) > >> >> > >> >> javax.servlet.http.HttpServlet.service(HttpServlet.java:650) > >> >> > >> >> javax.servlet.http.HttpServlet.service(HttpServlet.java:731) > >> >> > >> >> > >> >>org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFil > ter.java:52) > >> >> > >> >> *root cause* > >> >> > >> >> org.apache.uima.analysis_engine.AnalysisEngineProcessException: > >> >>Annotator processing failed. > >> >> > >> >> > >> >>org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngi > >> ne_impl.callAna > >> >>lysisComponentProcess(PrimitiveAnalysisEngine_impl.java:412) > >> >> > >> >> > >> >>org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngi > >> ne_impl.process > >> >>AndOutputNewCASes(PrimitiveAnalysisEngine_impl.java:314) > >> >> > >> >> > >> >>org.apache.uima.analysis_engine.asb.impl.ASB_impl$Aggregat > >> eCasIterator.pr > >> >>ocessUntilNextOutputCas(ASB_impl.java:570) > >> >> > >> >> > >> >>org.apache.uima.analysis_engine.asb.impl.ASB_impl$Aggregat > >> eCasIterator.<i > >> >>nit>(ASB_impl.java:412) > >> >> > >> >> > >> >>org.apache.uima.analysis_engine.asb.impl.ASB_impl.process( > >> ASB_impl.java:3 > >> >>44) > >> >> > >> >> > >> >>org.apache.uima.analysis_engine.impl.AggregateAnalysisEngi > >> ne_impl.process > >> >>AndOutputNewCASes(AggregateAnalysisEngine_impl.java:265) > >> >> > >> >> > >> >>org.apache.uima.analysis_engine.asb.impl.ASB_impl$Aggregat > >> eCasIterator.pr > >> >>ocessUntilNextOutputCas(ASB_impl.java:570) > >> >> > >> >> > >> >>org.apache.uima.analysis_engine.asb.impl.ASB_impl$Aggregat > >> eCasIterator.<i > >> >>nit>(ASB_impl.java:412) > >> >> > >> >> > >> >>org.apache.uima.analysis_engine.asb.impl.ASB_impl.process( > >> ASB_impl.java:3 > >> >>44) > >> >> > >> >> > >> >>org.apache.uima.analysis_engine.impl.AggregateAnalysisEngi > >> ne_impl.process > >> >>AndOutputNewCASes(AggregateAnalysisEngine_impl.java:265) > >> >> > >> >> > >> >>org.apache.uima.analysis_engine.impl.AnalysisEngineImplBas > >> e.process(Analy > >> >>sisEngineImplBase.java:269) > >> >> > >> >> > >> >>org.apache.uima.analysis_engine.impl.AnalysisEngineImplBas > >> e.process(Analy > >> >>sisEngineImplBase.java:284) > >> >> > >> >> > >> >>org.apache.ctakes.web.client.servlet.DemoServlet.doPost( > >> DemoServlet.java: > >> >>92) > >> >> > >> >> javax.servlet.http.HttpServlet.service(HttpServlet.java:650) > >> >> > >> >> javax.servlet.http.HttpServlet.service(HttpServlet.java:731) > >> >> > >> >> > >> >>org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFil > ter.java:52) > >> >> > >> >> *root cause* > >> >> > >> >> java.lang.NullPointerException > >> >> > >> >> > >> >> > >> >> -- > >> >> > >> >> with Regards > >> >> > >> >> Shahid Ashraf > >> >> > >> > > >> > > >> > > >> >-- > >> >with Regards > >> >Shahid Ashraf > >> > >> > > > > > > -- > > with Regards > > Shahid Ashraf > > > > > > -- > with Regards > Shahid Ashraf >
