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Posted to dev@pdfbox.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2019/02/27 16:26:00 UTC
[jira] [Commented] (PDFBOX-4475) PDFMergerUtility is very slow,
almost in dead loop
[ https://issues.apache.org/jira/browse/PDFBOX-4475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16779482#comment-16779482 ]
ASF subversion and git services commented on PDFBOX-4475:
---------------------------------------------------------
Commit 1854470 from Tilman Hausherr in branch 'pdfbox/trunk'
[ https://svn.apache.org/r1854470 ]
PDFBOX-4475: optimize by using separate Set instead of calling Map.containsValue()
> PDFMergerUtility is very slow, almost in dead loop
> --------------------------------------------------
>
> Key: PDFBOX-4475
> URL: https://issues.apache.org/jira/browse/PDFBOX-4475
> Project: PDFBox
> Issue Type: Bug
> Reporter: Derek Liu
> Priority: Critical
> Attachments: TourInventory_TourInventory_report.pdf, image-2019-02-27-15-43-42-304.png, screenshot-1.png
>
>
> When use PDFMergerUtility to merge PDF file, it is very slow to merge the struct tree. It seems that it in a dead loop.
> !image-2019-02-27-15-43-42-304.png!
> Test code:
> {code}
> package com.test;
> import java.io.IOException;
> import org.apache.pdfbox.multipdf.PDFMergerUtility;
> public class TestMergeUtil {
> public static void main( String[] args ) throws IOException {
> PDFMergerUtility merger = new PDFMergerUtility();
> merger.addSource( "D:\\probe\\TourInventory_TourInventory_report.PDF" );
> merger.addSource( "D:\\probe\\TourInventory_TourInventory_report.PDF" );
> merger.setDestinationFileName( "D:\\probe\\TourInventory_TourInventory_report_merged.pdf" );
> merger.mergeDocuments();
> }
> }
> {code}
> But after I comment bellow code, it can merge fast, but the merged PDF file size is very large.
> !screenshot-1.png!
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