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From bugzi...@apache.org
Subject [Bug 58896] autoSizeColumn() is extremely slow if worksheet contains merged cells
Date Fri, 12 Aug 2016 06:38:50 GMT

--- Comment #12 from Axel Howind <axel@dua3.com> ---
I remember observing very bad performance in handling merged cells starting in
POI 3.14(?). IIRC it was not only with autoSizeColumn(), but whenever trying to
query merged regions of a sheet. It could even be that it was just
getNbOfMergedRegions() in XSSF that was so horribly slow. I coded around this

Maybe I will dig into this again when I find the time.

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