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| Re: Mat 1.50 failed on NullPointerException when parsing HPROF [message #1720465 is a reply to message #1720186] |
Mon, 18 January 2016 13:44  |
Eclipse User |
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I have the same error with a dump made on a linux (hot spot 1.8.0_65) that I try to read on both Windows or Mac.
I try MemoryAnalyzer with a Jdk 7 (1.7.0_60) or 8 (1.8.0_65), but it neither succeed.
I had the same problem with a dump made from the live process and from a gcore dump file. And from a binary format.
I don't have more information in the error windows, but I found that in the '.log' file ":
!ENTRY org.eclipse.mat.ui 1 0 2016-01-18 19:26:47.676
!MESSAGE Detected compressed references, because with uncompressed 64-bit references the array at 0x6c00009b0 would overlap the array at 0x6c0000580
!ENTRY org.eclipse.mat.ui 1 0 2016-01-18 19:26:47.787
!MESSAGE Heap jvm.hprof contains 501 265 objects
!ENTRY org.eclipse.core.jobs 4 2 2016-01-18 19:26:48.130
!MESSAGE An internal error occurred during: "Parsing heap dump from 'jvm.hprof'".
!STACK 0
java.lang.NullPointerException
at org.eclipse.mat.hprof.HprofParserHandlerImpl.resolveClassHierarchy(HprofParserHandlerImpl.java:587)
at org.eclipse.mat.hprof.Pass2Parser.readInstanceDump(Pass2Parser.java:205)
at org.eclipse.mat.hprof.Pass2Parser.readDumpSegments(Pass2Parser.java:159)
at org.eclipse.mat.hprof.Pass2Parser.read(Pass2Parser.java:89)
at org.eclipse.mat.hprof.HprofIndexBuilder.fill(HprofIndexBuilder.java:94)
at org.eclipse.mat.parser.internal.SnapshotFactoryImpl.parse(SnapshotFactoryImpl.java:222)
at org.eclipse.mat.parser.internal.SnapshotFactoryImpl.openSnapshot(SnapshotFactoryImpl.java:126)
at org.eclipse.mat.snapshot.SnapshotFactory.openSnapshot(SnapshotFactory.java:145)
at org.eclipse.mat.ui.snapshot.ParseHeapDumpJob.run(ParseHeapDumpJob.java:83)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
!ENTRY org.eclipse.mat.ui 1 0 2016-01-18 19:27:08.010
!MESSAGE Detected compressed references, because with uncompressed 64-bit references the array at 0x6c00009b0 would overlap the array at 0x6c0000580
!ENTRY org.eclipse.mat.ui 1 0 2016-01-18 19:27:08.124
!MESSAGE Heap jvm.hprof contains 501 265 objects
!ENTRY org.eclipse.core.jobs 4 2 2016-01-18 19:27:08.359
!MESSAGE An internal error occurred during: "Parsing heap dump from 'jvm.hprof'".
!STACK 0
java.lang.NullPointerException
Does any body have an idea of the problem ?
Philippe
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