Hi all,
I created an application that opens many files (I'm talking thousands),
searching them for specific pages and then merges those pages into new PDF
files. The way I do it is by using the importPage command from the original
files into the split ones.
However, I'm getting an IOException ("Too many open files") from
ScratchFile after several thousands files were processed. I had a look at
the source code for that class and I think it might have to do with a
RandomAccessFile variable ("raf") not being properly closed.
All of the documents are opened using MemoryUsageSetting set to
setupTempFileOnly, by the way.
Could someone confirm this is the issue, and maybe help solve it? I'm using
PDFBox 2.0.26, by the way, and the app runs on a Mac.
The stack-trace:
Exception in thread "main" java.io.IOException: Too many open files
at java.base/java.io.UnixFileSystem.createFileExclusively0(Native Method)
at
java.base/java.io.UnixFileSystem.createFileExclusively(UnixFileSystem.java:356)
at java.base/java.io.File.createTempFile(File.java:2179)
at org.apache.pdfbox.io.ScratchFile.enlarge(ScratchFile.java:217)
at org.apache.pdfbox.io.ScratchFile.getNewPage(ScratchFile.java:167)
at
org.apache.pdfbox.io.ScratchFileBuffer.addPage(ScratchFileBuffer.java:126)
at org.apache.pdfbox.io.ScratchFileBuffer. <init>(ScratchFileBuffer.java:84)
at org.apache.pdfbox.io.ScratchFile.createBuffer(ScratchFile.java:424)
at org.apache.pdfbox.cos.COSStream.createRaw0utputStream(COSStream.java:273)
at org.apache.pdfbox.pdfparser.COSParser.parseCOSStream(COSParser.java:1140)
at org.apache.pdfbox.pdfparser.COSParser.parseFileObject(COSParser.java:929)
at
org.apache.pdfbox.pdfparser.COSParser.parseObjectDynamically(COSParser.java:888)
at
org.apache.pdfbox.pdfparser.COSParser.parseObjectDynamically(COSParser.java:800)
at
org.apache.pdfbox.pdfparser.COSParser.parseDictObjects(COSParser.java:760)
at org.apache.pdfbox.pdfparser.PDFParser.initialParse(PDFParser.java:187)
at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:226)
at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1107)
at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1090)
at org.apache.pdfbox.pdmodel.PDDocument.load(PDDocument.java:1014)
at MergeStudentRecords_2021.main(MergeStudentRecords_2021.java:324)
Thanks in advance!
Gilad
