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IdentityHashMap gets NPE when trying to put [message #1720103]

Thu, 14 January 2016 12:44

Shay Sofer

Messages: 1
Registered: January 2016

Junior Member

I'm using `EclipseLink 2.6.0-M3` apparently when trying to query and call getResult().

I get this exception that looks weird (EclipseLink code looks safe from NPE) and main suspect is the JDK:

**Caused by: java.lang.NullPointerException
at java.util.IdentityHashMap.put(IdentityHashMap.java:447)**
at org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet.addObjectChangeSet(UnitOfWorkChangeSet.java:160)
at org.eclipse.persistence.internal.sessions.UnitOfWorkChangeSet.mergeUnitOfWorkChangeSet(UnitOfWorkChangeSet.java:510)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.writeChanges(RepeatableWriteUnitOfWork.java:469)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.flush(EntityManagerImpl.java:874)
at org.eclipse.persistence.internal.jpa.QueryImpl.performPreQueryFlush(QueryImpl.java:963)
at org.eclipse.persistence.internal.jpa.QueryImpl.executeReadQuery(QueryImpl.java:207

)
at org.eclipse.persistence.internal.jpa.QueryImpl.getResultList(QueryImpl.java:461)

Using this Java version (IBM JDK) -
Java(TM) SE Runtime Environment (build pxi3270sr9fp20-20151106_01(SR9 FP20))

It happens rarely, so debug won't help here.

Thanks in advance.

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Re: IdentityHashMap gets NPE when trying to put [message #1720209 is a reply to message #1720103]

Fri, 15 January 2016 09:04

Lukas Jungmann

Messages: 36
Registered: November 2013
Location: Prague, Czech Republic

Member

Hi,

looks like a bug similar to https://bugs.eclipse.org/bugs/show_bug.cgi?id=463350 but without a test which fails at least rarely it is hard to fix. Can you file a bug and attach full stack trace and your test there, please?

Thanks!

--lukas

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