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https://issues.apache.org/jira/browse/JENA-597?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Scott Patterson updated JENA-597:
---------------------------------
Description:
The following exception may occur when more than one thread requires access to
the org.apache.jena.atlas.lib.cache.CacheLRU embedded in IRIResolverNormal:
Caused by: java.lang.NullPointerException
at java.util.LinkedHashMap.get(LinkedHashMap.java:339)
at org.apache.jena.atlas.lib.cache.CacheLRU.get(CacheLRU.java:53)
at
org.apache.jena.riot.system.IRIResolver$IRIResolverNormal.resolveSilent(IRIResolver.java:427)
at
org.apache.jena.riot.system.IRIResolver$IRIResolverNormal.<init>(IRIResolver.java:383)
at org.apache.jena.riot.system.IRIResolver.create(IRIResolver.java:210)
at org.apache.jena.riot.system.RiotLib.profile(RiotLib.java:141)
at org.apache.jena.riot.system.RiotLib.profile(RiotLib.java:130)
at org.apache.jena.riot.lang.LangRDFXML.<init>(LangRDFXML.java:104)
at org.apache.jena.riot.lang.LangRDFXML.create(LangRDFXML.java:74)
at org.apache.jena.riot.RiotReader.createParser(RiotReader.java:128)
at
org.apache.jena.riot.RDFParserRegistry$ReaderRIOTFactoryImpl$1.read(RDFParserRegistry.java:141)
at org.apache.jena.riot.RDFDataMgr.process(RDFDataMgr.java:818)
at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:258)
at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:244)
at
org.apache.jena.riot.adapters.RDFReaderRIOT.read(RDFReaderRIOT.java:69)
at com.ibm.team.jis.lqe.resource.RDFEntity.getModel(RDFEntity.java:361)
... 39 more
This may be related to the problem reported that is suppose to be fixed by the
cloned issue. It looks to be the same stack trace. I've attached a test to
reproduce. Works with Oracle Oracle JRE 1.6.0.27 but not IBM jre. Keep stopping
and restarting the test until the NPE happens. NPE usually happens right off
the start.
was:
The following exception may occur when more than one thread requires access to
the org.apache.jena.atlas.lib.cache.CacheLRU embedded in IRIResolverNormal:
Caused by: java.lang.NullPointerException
at java.util.LinkedHashMap.get(LinkedHashMap.java:339)
at org.apache.jena.atlas.lib.cache.CacheLRU.get(CacheLRU.java:53)
at
org.apache.jena.riot.system.IRIResolver$IRIResolverNormal.resolveSilent(IRIResolver.java:427)
at
org.apache.jena.riot.system.IRIResolver$IRIResolverNormal.<init>(IRIResolver.java:383)
at org.apache.jena.riot.system.IRIResolver.create(IRIResolver.java:210)
at org.apache.jena.riot.system.RiotLib.profile(RiotLib.java:141)
at org.apache.jena.riot.system.RiotLib.profile(RiotLib.java:130)
at org.apache.jena.riot.lang.LangRDFXML.<init>(LangRDFXML.java:104)
at org.apache.jena.riot.lang.LangRDFXML.create(LangRDFXML.java:74)
at org.apache.jena.riot.RiotReader.createParser(RiotReader.java:128)
at
org.apache.jena.riot.RDFParserRegistry$ReaderRIOTFactoryImpl$1.read(RDFParserRegistry.java:141)
at org.apache.jena.riot.RDFDataMgr.process(RDFDataMgr.java:818)
at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:258)
at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:244)
at
org.apache.jena.riot.adapters.RDFReaderRIOT.read(RDFReaderRIOT.java:69)
at com.ibm.team.jis.lqe.resource.RDFEntity.getModel(RDFEntity.java:361)
... 39 more
This may be related to the problem reported that is suppose to be fixed by the
cloned issue. It looks to be the same stack trace. I've attached a test to
reproduce. Works with Oracle 7 JRE but not IBM 7.
> IRIResolverNormal needs thread safe CacheLRU
> --------------------------------------------
>
> Key: JENA-597
> URL: https://issues.apache.org/jira/browse/JENA-597
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ
> Affects Versions: Jena 2.11.0
> Environment: Any IBM JRE 7 or higher
> Reporter: Scott Patterson
> Attachments: IRIResolverTest.java
>
>
> The following exception may occur when more than one thread requires access
> to the org.apache.jena.atlas.lib.cache.CacheLRU embedded in IRIResolverNormal:
> Caused by: java.lang.NullPointerException
> at java.util.LinkedHashMap.get(LinkedHashMap.java:339)
> at org.apache.jena.atlas.lib.cache.CacheLRU.get(CacheLRU.java:53)
> at
> org.apache.jena.riot.system.IRIResolver$IRIResolverNormal.resolveSilent(IRIResolver.java:427)
> at
> org.apache.jena.riot.system.IRIResolver$IRIResolverNormal.<init>(IRIResolver.java:383)
> at org.apache.jena.riot.system.IRIResolver.create(IRIResolver.java:210)
> at org.apache.jena.riot.system.RiotLib.profile(RiotLib.java:141)
> at org.apache.jena.riot.system.RiotLib.profile(RiotLib.java:130)
> at org.apache.jena.riot.lang.LangRDFXML.<init>(LangRDFXML.java:104)
> at org.apache.jena.riot.lang.LangRDFXML.create(LangRDFXML.java:74)
> at org.apache.jena.riot.RiotReader.createParser(RiotReader.java:128)
> at
> org.apache.jena.riot.RDFParserRegistry$ReaderRIOTFactoryImpl$1.read(RDFParserRegistry.java:141)
> at org.apache.jena.riot.RDFDataMgr.process(RDFDataMgr.java:818)
> at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:258)
> at org.apache.jena.riot.RDFDataMgr.read(RDFDataMgr.java:244)
> at
> org.apache.jena.riot.adapters.RDFReaderRIOT.read(RDFReaderRIOT.java:69)
> at com.ibm.team.jis.lqe.resource.RDFEntity.getModel(RDFEntity.java:361)
> ... 39 more
> This may be related to the problem reported that is suppose to be fixed by
> the cloned issue. It looks to be the same stack trace. I've attached a test
> to reproduce. Works with Oracle Oracle JRE 1.6.0.27 but not IBM jre. Keep
> stopping and restarting the test until the NPE happens. NPE usually happens
> right off the start.
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