NegativeArraySizeException parsing huge heap dump

[eclipsewebmaster]

| --- | --- | | Bugzilla Link | 552009 | | Status | NEW | | Importance | P3 normal | | Reported | Oct 10, 2019 10:29 EDT | | Modified | Jun 03, 2021 03:44 EDT | | Version | 1.9 | | Reporter | Andrew Johnson |

Description

From the MAT dev mailing list: https://www.eclipse.org/lists/mat-dev/msg00589.html

Hi All,

Seems even if # of objects is less than 2 billion, we still have some issues when we use MAT. I encounter following error log when I try to open heap dump with 1 billion object...

!ENTRY org.eclipse.mat.ui 1 0 2019-10-09 00:09:01.674
!MESSAGE Heap D:\tmp\19674.dump contains 1,104,267,590 objects

!ENTRY org.eclipse.core.jobs 4 2 2019-10-09 02:02:42.929
!MESSAGE An internal error occurred during: "Parsing heap dump from 'D:\tmp\19674.dump'".
!STACK 0
java.lang.NegativeArraySizeException
at java.io.ObjectOutputStream$HandleTable.growEntries(ObjectOutputStream.java:2347)
at java.io.ObjectOutputStream$HandleTable.assign(ObjectOutputStream.java:2276)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1428)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1378)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at org.eclipse.mat.collect.HashMapIntObject.writeObject(HashMapIntObject.java:438)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:1140)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1496)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
at org.eclipse.mat.parser.internal.SnapshotImpl.create(SnapshotImpl.java:215)
at org.eclipse.mat.parser.internal.SnapshotImplBuilder.create(SnapshotImplBuilder.java:95)
at org.eclipse.mat.parser.internal.SnapshotFactoryImpl.parse(SnapshotFactoryImpl.java:235)
at org.eclipse.mat.parser.internal.SnapshotFactoryImpl.openSnapshot(SnapshotFactoryImpl.java:126)
at org.eclipse.mat.snapshot.SnapshotFactory.openSnapshot(SnapshotFactory.java:147)
at org.eclipse.mat.ui.snapshot.ParseHeapDumpJob.run(ParseHeapDumpJob.java:83)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:60)

Thanks,
Roy