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OutOfMemoryError

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Vadim Nasardinov
2004-11-30
2013-05-09

  • Vadim Nasardinov

    Vadim Nasardinov - 2004-11-30

    I'm getting an OutOfMemoryError when processing a moderately sized
    coverage report:

      | $ ls -sh1 coverage.*
      |  65k coverage.ec
      | 361k coverage.em

    Has anyone seen this before?

    Here's what I get:

    $ java -Demma.verbosity.level=all -verbose:gc -Xmx128M emma report -r html -in coverage.em,coverage.ec
    [GC 509K->139K(1984K), 0.0210380 secs]
    [GC 651K->197K(1984K), 0.0164570 secs]
    EMMA: [emma.Processor::run] complete tool properties:
    coverage.out.file:    [coverage.ec]
    coverage.out.merge:    [true]
    instr.do_suid_compensation:    [true]
    instr.exclude_bridge_methods:    [true]
    instr.exclude_synthetic_methods:    [true]
    metadata.out.file:    [coverage.em]
    metadata.out.merge:    [true]
    report.columns:    [name,class,method,block,line]
    report.depth:    [method]
    report.html.out.encoding:    [ISO-8859-1]
    report.html.out.file:    [coverage/index.html]
    report.metrics:    [method:70,block:80,line:80,class:100]
    report.out.dir:    [/var/scratch]
    report.out.encoding:    [ISO-8859-15]
    report.sort:    [+block,+name,+method,+class]
    report.txt.columns:    [class,method,block,line,name]
    report.txt.depth:    [all]
    report.txt.out.file:    [coverage.txt]
    report.units:    [instr]
    report.xml.out.encoding:    [UTF-8]
    report.xml.out.file:    [coverage.xml]
    session.out.file:    [coverage.es]
    session.out.merge:    [true]
    verbosity.level:    [all]
    EMMA: [EMMA v2.0, build 4217 (2004/07/17 12:19:29)]
    EMMA: input data path:
    EMMA: {
    EMMA:   /var/scratch/coverage.em
    EMMA:   /var/scratch/coverage.ec
    EMMA: }
    EMMA: source path not set
    EMMA: processing input file [/var/scratch/coverage.em] ...
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.em]: file length = 369628
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.em]: position 24
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.em]: found valid entry of size 179793 and type 0
    [GC 709K->389K(1984K), 0.0190900 secs]
    EMMA: [emma.data.DataFactory::mergeload] entry read in 107 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.em]: position 179826
    [GC 901K->720K(1984K), 0.0291560 secs]
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.em]: found valid entry of size 9991 and type 0
    EMMA: [emma.data.DataFactory::mergeload] entry read in 4 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.em]: position 189826
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.em]: found valid entry of size 179793 and type 0
    [GC 1232K->1069K(1984K), 0.0176940 secs]
    EMMA: [emma.data.DataFactory::mergeload] entry read in 57 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.em]: position 369628
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.em]: file processed in 333 ms
    EMMA:   loaded 183 metadata entries
    EMMA: processing input file [/var/scratch/coverage.ec] ...
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: file length = 67056
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: position 24
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: found valid entry of size 2290 and type 1
    EMMA: [emma.data.DataFactory::mergeload] entry read in 5 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: position 2323
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: found valid entry of size 2165 and type 1
    EMMA: [emma.data.DataFactory::mergeload] entry read in 4 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: position 4497
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: found valid entry of size 2712 and type 1
    EMMA: [emma.data.DataFactory::mergeload] entry read in 0 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: position 7218
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: found valid entry of size 2712 and type 1
    [GC 1581K->1292K(1984K), 0.0171510 secs]
    EMMA: [emma.data.DataFactory::mergeload] entry read in 30 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: position 9939
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: found valid entry of size 2488 and type 1
    EMMA: [emma.data.DataFactory::mergeload] entry read in 1 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: position 12436
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: found valid entry of size 4335 and type 1
    EMMA: [emma.data.DataFactory::mergeload] entry read in 1 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: position 16780
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: found valid entry of size 4335 and type 1
    EMMA: [emma.data.DataFactory::mergeload] entry read in 1 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: position 21124
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: found valid entry of size 2165 and type 1
    EMMA: [emma.data.DataFactory::mergeload] entry read in 3 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: position 23298
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: found valid entry of size 2290 and type 1
    EMMA: [emma.data.DataFactory::mergeload] entry read in 1 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: position 25597
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: found valid entry of size 2712 and type 1
    EMMA: [emma.data.DataFactory::mergeload] entry read in 1 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: position 28318
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: found valid entry of size 2165 and type 1
    EMMA: [emma.data.DataFactory::mergeload] entry read in 0 ms
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: position 30492
    EMMA: [emma.data.DataFactory::mergeload] [/var/scratch/coverage.ec]: found valid entry of size 2712 and type 0
    [EMMA v2.0, build 4217]
    emma report: unexpected failure:
    Exception in thread "main" [GC 1804K->1270K(1984K), 0.0034110 secs]
    com.vladium.emma.EMMARuntimeException: unexpected failure:
        at com.vladium.emma.Command.exit(Command.java:237)
        at com.vladium.emma.report.reportCommand.run(reportCommand.java:145)
        at emma.main(emma.java:40)
    Caused by: java.lang.OutOfMemoryError

     

    • Vadim Nasardinov

      Vadim Nasardinov - 2004-12-01

      Never mind, I think this was a random fluke.

      I tracked it down to this line of code in MetaData#readExternal:

        Logger.getLogger().info("size=" + size);
        final HashMap classMap = new HashMap (size);

      It was constructing a map of size 963605095, causing
      an immediate OOM error.  Must've been a corrupted coverage
      file.

       

    • Vlad Roubtsov

      Vlad Roubtsov - 2004-12-02

      Yes, this is a known issue (RFE: http://sourceforge.net/tracker/index.php?func=detail&aid=974340&group_id=108932&atid=651900\). It is caused by file corruption which can happen when multiple JVMs concurrently write to the same *.ec file.

       

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