https://bz.apache.org/bugzilla/show_bug.cgi?id=57884
Bug ID: 57884
Summary: XSSFDataFormat.getFormat is slow with large numbers of
formats
Product: POI
Version: 3.12-dev
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: XSSF
Assignee: [email protected]
Reporter: [email protected]
As discovered when working on #57880, for XSSF, creating 33,000 cell styles is
30 times faster than creating the same number of format indexes. For 5,000 cell
styles and formats, creating the cell styles is only 3 times faster than
creating the formats.
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