https://bz.apache.org/bugzilla/show_bug.cgi?id=65042
Bug ID: 65042
Summary: Writing pircture to workbook cause memory leak due to
picture data is to much in memory.
Product: POI
Version: 4.1.2-FINAL
Hardware: Macintosh
OS: Mac OS X 10.4
Status: NEW
Severity: blocker
Priority: P2
Component: SXSSF
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 37670
--> https://bz.apache.org/bugzilla/attachment.cgi?id=37670&action=edit
Memory Usage Dump
Sxssf using Xssf handle its picture. So picture will save in memory, not flush
with row. This means if we have a lot of pictures had to write in xlsx, this
will cause memory leak which was I am struggling with. I can't find a way to
flush picture data before workbook.write().
The test case is, 300kb picture, one row write 10 pictures. JVM -Xmx128m.
There will be an oom when write 50 rows. In that time, the picture data list
will have 60mb in memory.
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