Problem with PDF document 10MB 140 pages scanned OCR

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wmay

I uploaded a scanned PDF document which is OCR´ed - 10MB file size, 140 pages, b&w scan, PDF with text below the image - via the Alfresco Explorer and also via CIFS.

The document is uploaded correct, can downloaded and can displayed - but it is not searchable via fulltext search. When i try to display  the text preview from the "i" icon in the Alfresco explorer it is not possible - when i click to this icon the icon image starts to "rotate" and then after a while an error message comes up "500: Internal server error".

I did the same test with different 3.2 CE - with allways the same result - i repeated this tests also with the EE 3.0 - same result.

It seems the the server is not able to extract the text information from the PDF and to add this text to the fulltext index because it is not possible to search via fulltext and it is not possible to view the extracted text via the Alfresco explorer.

I splitted the same PDF document to 6 chapter-documents with max. 3,7MB and max. 50 pages each chapter / document and all works fine - no problem with the search and no problem with the text extraction. The hidden Text of the PDF can extracted by CTRL+A from the PDF and inserted to e.g. notepad without a problem.

My questions

- Does anybody had the same problem with "bigger" PDF documents
- is there a restriction for the size of the e.g. PDF documents to upload and to index (text extraction)
- are there any known problems with the PDF text extraction - file size ?
- are there any settings and configurations which control this process (timeout, size restrictions…)
- what does this error message "500: Internal server error" means ?

If needed i can post a download link for the PDF to make tests.

I hope that there is not a "basic" problem or restriction with Alfresco because the PDF text extraction and the indexing of "bigger" PDF files should work without a problem - from my understanding a scanned and OCRed 140 page document is not a "big" but a normal document which should work without a problem.

Can it be possible that the implemeted PDF text extractor is a weak point or component of Alfresco ?

Does anybody has tested and implemented other text extractors which work better and more reliable

Thank you for your answers and help

ofrxnz

- Does anybody had the same problem with "bigger" PDF documents

i have dropped simultaneously dropped multiple 25+mb pdfs in with no issue….sometimes it just takes forever to generate previews and what not

- is there a restriction for the size of the e.g. PDF documents to upload and to index (text extraction)

dont think so

- are there any known problems with the PDF text extraction - file size ?

i have had some memory issues before when i did a 500pg image pdf….it took 3 hours and slammed the memmory….didnt crash, but sure locked up the server. 

- are there any settings and configurations which control this process (timeout, size restrictions…)

not that i know of

- what does this error message "500: Internal server error" means ?

usually means the server exploded….its kind of a generic error that means something didnt fail gracefully

what is your system configuration?
operating system?
open office version?
alfresco version?
pdf2swf version?
image magick version?