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Date: Mon, 17 Oct 2011 16:00:50 -0700 (PDT)
From: Xue-Feng Yang <just4look@yahoo.com>
Reply-To: Xue-Feng Yang <just4look@yahoo.com>
Subject: Re: ConcurrentModificationException problems
To: "user@uima.apache.org" <user@uima.apache.org>
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Thanks Marshall.I resolved this problems by changing the algorithms.=0A=0A=
=0A=0A________________________________=0AFrom: Xue-Feng Yang <just4look@yah=
oo.com>=0ATo: "user@uima.apache.org" <user@uima.apache.org>=0ASent: Saturda=
y, October 15, 2011 4:21:42 PM=0ASubject: Re: ConcurrentModificationExcepti=
on problems=0A=0A=0AThanks Marshall. This is possible the reason.=A0 I'll d=
ebug this later when I have time.=0A=0A=0A=0A______________________________=
__=0AFrom: Marshall Schor <msa@schor.com>=0ATo: user@uima.apache.org=0ASent=
: Saturday, October 15, 2011 1:09:17 AM=0ASubject: Re: ConcurrentModificati=
onException problems=0A=0AThis error can happen when you are running an ite=
rator over some index, and are=0Aperhaps inside the loop are adding=0A Feat=
ure Structures to that same index.=0A=0AFrom the stack trace, I would sugge=
st looking around line 127 in your=0AEnDicAnnotator, to see if you are perh=
aps adding a new FeatureStructure to the=0Aindexes.=0A=0A-Marshall=0A=0A=0A=
On 10/14/2011 7:09 PM, Xue-Feng Yang wrote:=0A> I have an annotator with a =
Set<String> variable which reads data in initialize(UimaContext) from a fil=
e via parameter configuration in UimaContext. When debugging, it is OK at f=
irst 2 steps checks.contains(shingle) returned true. However, when called c=
hecks.contains(shingle) at the 36th, it throws an exception =0A>=0A>=0A> An=
alysisEngineProcessException: Annotator processing failed=0A> Caused by: ja=
va.util.ConcurrentModificationException=0A> In my part of the code, after i=
nitialized, the variable is never modified and only the method "contains" i=
s called. I also tried to create the variable in=0A>=0A> Set<String> checks=
 =3D=0A Collections.synchronizedSet(new HashSet<String>());=0A>=0A>=0A> and=
 not to test in JUnit, but the problem remains the same.=0A>=0A>=0A> After =
removing the code unit with "contains", it can go through.=0A>=0A> Any idea=
?=0A>=0A> Xue-Feng=0A>=0A> /////////////////////////////=0A>=0A> Oct 14, 20=
11 5:57:26 PM org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_=
impl callAnalysisComponentProcess(405)=0A> SEVERE: Exception occurred=0A> o=
rg.apache.uima.analysis_engine.AnalysisEngineProcessException: Annotator pr=
ocessing failed.=A0 =A0 =0A>=A0 =A0  at org.apache.uima.analysis_engine.imp=
l.PrimitiveAnalysisEngine_impl.callAnalysisComponentProcess(PrimitiveAnalys=
isEngine_impl.java:391)=0A>=A0 =A0  at org.apache.uima.analysis_engine.impl=
.PrimitiveAnalysisEngine_impl.processAndOutputNewCASes(PrimitiveAnalysisEng=
ine_impl.java:295)=0A>=A0 =A0  at=0A org.apache.uima.analysis_engine.impl.A=
nalysisEngineImplBase.process(AnalysisEngineImplBase.java:267)=0A>=A0 =A0  =
at org.apache.uima.analysis_engine.impl.AnalysisEngineImplBase.process(Anal=
ysisEngineImplBase.java:280)=0A>=A0 =A0  at com.norvar.uima.test.utils.Test=
Utils.runAE(TestUtils.java:48)=0A>=A0 =A0  at com.norvar.uima.en_places.tes=
t.EnPlacesTest.testPlacesAE(EnPlacesTest.java:41)=0A>=A0 =A0  at com.norvar=
.uima.en_places.test.EnPlacesTest.main(EnPlacesTest.java:20)=0A> Caused by:=
 java.util.ConcurrentModificationException=0A>=A0 =A0  at org.apache.uima.c=
as.impl.FSIndexRepositoryImpl$PointerIterator.checkConcurrentModification(F=
SIndexRepositoryImpl.java:246)=0A>=A0 =A0  at org.apache.uima.cas.impl.FSIn=
dexRepositoryImpl$PointerIterator.ll_get(FSIndexRepositoryImpl.java:537)=0A=
>=A0 =A0  at=0A org.apache.uima.cas.impl.FSIndexRepositoryImpl$PointerItera=
tor.get(FSIndexRepositoryImpl.java:530)=0A>=A0 =A0  at org.apache.uima.cas.=
impl.FSIteratorWrapper.get(FSIteratorWrapper.java:48)=0A>=A0 =A0  at org.ap=
ache.uima.cas.impl.FSIteratorImplBase.next(FSIteratorImplBase.java:67)=0A>=
=A0 =A0  at org.apache.uima.cas.impl.FSIteratorImplBase.next(FSIteratorImpl=
Base.java:1)=0A>=A0 =A0  at com.norvar.uima.en_dic.annotator.EnDicAnnotator=
.process(EnDicAnnotator.java:127)=0A>=A0 =A0  at org.apache.uima.analysis_c=
omponent.JCasAnnotator_ImplBase.process(JCasAnnotator_ImplBase.java:48)=0A>=
=A0 =A0  at org.apache.uima.analysis_engine.impl.PrimitiveAnalysisEngine_im=
pl.callAnalysisComponentProcess(PrimitiveAnalysisEngine_impl.java:377)=0A>=
=A0 =A0  ... 6 more=0A> org.apache.uima.analysis_engine.AnalysisEngineProce=
ssException: Annotator processing failed.=A0 =A0 =0A>=A0 =A0  at=0A org.apa=
che.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.callAnalysisComp=
onentProcess(PrimitiveAnalysisEngine_impl.java:391)=0A>=A0 =A0  at org.apac=
he.uima.analysis_engine.impl.PrimitiveAnalysisEngine_impl.processAndOutputN=
ewCASes(PrimitiveAnalysisEngine_impl.java:295)=0A>=A0 =A0  at org.apache.ui=
ma.analysis_engine.impl.AnalysisEngineImplBase.process(AnalysisEngineImplBa=
se.java:267)=0A>=A0 =A0  at org.apache.uima.analysis_engine.impl.AnalysisEn=
gineImplBase.process(AnalysisEngineImplBase.java:280)=0A>=A0 =A0  at com.no=
rvar.uima.test.utils.TestUtils.runAE(TestUtils.java:48)=0A>=A0 =A0  at com.=
norvar.uima.en_places.test.EnPlacesTest.testPlacesAE(EnPlacesTest.java:41)=
=0A>=A0 =A0  at com.norvar.uima.en_places.test.EnPlacesTest.main(EnPlacesTe=
st.java:20)=0A> Caused by: java.util.ConcurrentModificationException=0A>=A0=
 =A0  at=0A org.apache.uima.cas.impl.FSIndexRepositoryImpl$PointerIterator.=
checkConcurrentModification(FSIndexRepositoryImpl.java:246)=0A>=A0 =A0  at =
org.apache.uima.cas.impl.FSIndexRepositoryImpl$PointerIterator.ll_get(FSInd=
exRepositoryImpl.java:537)=0A>=A0 =A0  at org.apache.uima.cas.impl.FSIndexR=
epositoryImpl$PointerIterator.get(FSIndexRepositoryImpl.java:530)=0A>=A0 =
=A0  at org.apache.uima.cas.impl.FSIteratorWrapper.get(FSIteratorWrapper.ja=
va:48)=0A>=A0 =A0  at org.apache.uima.cas.impl.FSIteratorImplBase.next(FSIt=
eratorImplBase.java:67)=0A>=A0 =A0  at org.apache.uima.cas.impl.FSIteratorI=
mplBase.next(FSIteratorImplBase.java:1)=0A>=A0 =A0  at com.norvar.uima.en_d=
ic.annotator.EnDicAnnotator.process(EnDicAnnotator.java:127)=0A>=A0 =A0  at=
 org.apache.uima.analysis_component.JCasAnnotator_ImplBase.process(JCasAnno=
tator_ImplBase.java:48)=0A>=A0 =A0  at=0A org.apache.uima.analysis_engine.i=
mpl.PrimitiveAnalysisEngine_impl.callAnalysisComponentProcess(PrimitiveAnal=
ysisEngine_impl.java:377)=0A>=A0 =A0  ... 6 more
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