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From bugzi...@apache.org
Subject [Bug 63657] New: Memory usage increase during writing Documents introduced in 4.0.0
Date Sun, 11 Aug 2019 08:28:51 GMT
https://bz.apache.org/bugzilla/show_bug.cgi?id=63657

            Bug ID: 63657
           Summary: Memory usage increase during writing Documents
                    introduced in 4.0.0
           Product: POI
           Version: 4.0.0-FINAL
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: regression
          Priority: P2
         Component: XSSF
          Assignee: dev@poi.apache.org
          Reporter: dominik.stadler@gmx.at
  Target Milestone: ---

The changes for bug #62130 introduced a large memory increase due to the way
Apache XMLBeans handles references to the CTCellImpl objects in
XSSFRow/CTRowImpl and XSSFCell.

During writing a document, all CTCellImpl objects are now copied, while the
CTRowImpl in XSSFRow still keeps a reference to the previous object, thus
causing double memory usage until the XSSFWorkbook is removed from memory.

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