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From bugzi...@apache.org
Subject [Bug 57842] New: Using POI 3.9 API memory consumed reading an xlsx file is not released back to the operating system after completion
Date Tue, 21 Apr 2015 14:54:34 GMT
https://bz.apache.org/bugzilla/show_bug.cgi?id=57842

            Bug ID: 57842
           Summary: Using POI 3.9 API memory consumed reading an xlsx file
                    is not released back to the operating system after
                    completion
           Product: POI
           Version: 3.9-FINAL
          Hardware: PC
            Status: NEW
          Severity: normal
          Priority: P2
         Component: XSSF
          Assignee: dev@poi.apache.org
          Reporter: pcllau@gmail.com

Created attachment 32673
  --> https://bz.apache.org/bugzilla/attachment.cgi?id=32673&action=edit
org.eclipse.mat report

I am running a web application on Apache Tomcat version 7.0.56, using jdk
1.7.0_45, spring 3.1.0.RC2, and experiencing what I think is a memory leak in
the POI API version 3.9, or one of it's dependencies.

When using POI 3.9 API memory consumed reading an xlsx file is not released
back to the operating system after completion.

org.eclipse.mat reports the following information (See attachment for full
details):

The thread org.apache.tomcat.util.threads.TaskThread @ 0x5eca3afb0
http-bio-8091-exec-10 keeps local variables with total size 68,205,584 (35.67%)
bytes.
The memory is accumulated in one instance of "byte[]" loaded by "<system class
loader>".

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