https://bz.apache.org/bugzilla/show_bug.cgi?id=63474

PJ Fanning <[email protected]> changed:

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from PJ Fanning <[email protected]> ---
Could you move this to the dev list?

Reading xlsx files using XSSFWorkbook takes a lot of memory.

In my mind you have options like
* stay with POI 3.13
* increase your JVM heap
* rewrite your code to use a streaming xlsx parser (eg
https://svn.apache.org/repos/asf/poi/trunk/src/examples/src/org/apache/poi/xssf/eventusermodel/XLSX2CSV.java)
* try to patch POI 4.1 to use less memory

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