Marek Pribula created PDFBOX-4169:
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Summary: PDFPrintable has subsampling but it can not be used
Key: PDFBOX-4169
URL: https://issues.apache.org/jira/browse/PDFBOX-4169
Project: PDFBox
Issue Type: Bug
Reporter: Marek Pribula
We are happily using version 2.0.9 with subsampling. During that, I have
noticed that memory consumption is unusually high during printing for a
particular file. Decompressing and rendering this file was without issues (we
have created an instance of PDFRenderer and set subsampling to true). During
debugging I notice that in the PDFPrintable when calling
renderer.renderPageToGraphics the renderer has this feature turned off. The
reason is very simple. PDFPrintable creates its own PDFRenderer in the
constructor and does not set subsampling on / does not allow this feature to be
set from outside. I did some test with a modified version of PDFPrintable
(setting always subsampling to true in the very same constructor the renderer
is instantiated) and it shows significantly better results for memory
consumption - in my case it was from OutOfMemory with Xmx1g to no problem with
Xmx420m (I did not bother to test with lower Xmx).
I am not sure if this was the intention but I do not think so since there is at
least one if asking about subsampling and with this configuration, it is
pointless since it always will be false.
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