[jira] [Created] (PDFBOX-2101) Surprising memory consumption when extracting images

["Tim Allison (JIRA)" <ji...@apache.org>]

Tim Allison created PDFBOX-2101:
-----------------------------------

             Summary: Surprising memory consumption when extracting images
                 Key: PDFBOX-2101
                 URL: https://issues.apache.org/jira/browse/PDFBOX-2101
             Project: PDFBox
          Issue Type: Bug
          Components: Utilities
    Affects Versions: 1.8.5
         Environment: Windows 7
java version "1.7.0_55"
Java(TM) SE Runtime Environment (build 1.7.0_55-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.55-b03, mixed mode)

            Reporter: Tim Allison
            Priority: Minor


ExtractImages seems to fail to release memory resources on some files in both PDFBox 1.8.5 and trunk.  

On this file 4MB file [http://digitalcorpora.org/corp/nps/files/govdocs1/239/239665.pdf], if extracting every image on every page (and there are many, many duplicate images), there is an OOM with -Xmx1g.  If there is no Xmx and there is > 2.5g available, ExtractImages will work.

With some experimentation, the triggers seem to be JPEG images that have masks.  I'm not sure, though, whether the issue is with PDFBox or Java.

Commandlines:
1.8.5:
java -Xmx1g -cp pdfbox-app-1.8.5.jar org.apache.pdfbox.ExtractImages 239665.pdf

2.0_SNAPSHOT:
java -Xmx1g -cp pdfbox-app-2.0.0-SNAPSHOT.jar org.apache.pdfbox.tools.ExtractImages -addkey 239665.pdf

Results:
1.8.5: 906 files before OOM
{noformat}
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
        at java.util.Arrays.copyOf(Arrays.java:2271)
        at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:113)
        at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.ja
va:93)
        at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:140)
        at org.apache.pdfbox.pdmodel.common.PDStream.getByteArray(PDStream.java:
514)
        at org.apache.pdfbox.pdmodel.graphics.xobject.PDPixelMap.getRGBImage(PDP
ixelMap.java:217)
        at org.apache.pdfbox.pdmodel.graphics.xobject.PDPixelMap.write2OutputStr
eam(PDPixelMap.java:363)
        at org.apache.pdfbox.pdmodel.graphics.xobject.PDXObjectImage.write2file(
PDXObjectImage.java:254)
        at org.apache.pdfbox.ExtractImages.processResources(ExtractImages.java:2
02)
        at org.apache.pdfbox.ExtractImages.extractImages(ExtractImages.java:160)

        at org.apache.pdfbox.ExtractImages.main(ExtractImages.java:65)
{noformat}

2.0_SNAPSHOT: 428 files before OOM
{noformat}
Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
        at java.util.Arrays.copyOf(Arrays.java:2271)
        at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:113)
        at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.ja
va:93)
        at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:140)
        at org.apache.pdfbox.io.IOUtils.copy(IOUtils.java:70)
        at org.apache.pdfbox.io.IOUtils.toByteArray(IOUtils.java:52)
        at org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.from8bit(
SampledImageReader.java:171)
        at org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.getRGBIma
ge(SampledImageReader.java:154)
        at org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.getImage(PDIm
ageXObject.java:171)
        at org.apache.pdfbox.tools.ExtractImages.write2file(ExtractImages.java:2
31)
        at org.apache.pdfbox.tools.ExtractImages.processResources(ExtractImages.
java:206)
        at org.apache.pdfbox.tools.ExtractImages.extractImages(ExtractImages.jav
a:164)
        at org.apache.pdfbox.tools.ExtractImages.main(ExtractImages.java:69)
{noformat}



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