https://bugs.documentfoundation.org/show_bug.cgi?id=171228

            Bug ID: 171228
           Summary: Opening ODS with filter is very slow compared to same
                    XLSX and file without filter
           Product: LibreOffice
           Version: 26.8.0.0 alpha0+ master
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Calc
          Assignee: [email protected]
          Reporter: [email protected]

Description:
Opening an ODS-file is very slow when a filter is applied in the saved
document.
Compare the speed of opening of attached documents.

Note that the same filtered document saved as XLSX opens very quickly!

Steps to Reproduce:
1. Open no_filter.ods > fast opening
2. Open filter.ods > this takes 25 seconds for opening
3. Open filter.xlsx > fast opening

Actual Results:
Opening the filtered ODS-file is very slow. The example document has only 40000
rows.

Expected Results:
I expect that opening the ODS-file is as quick as opening the XLSX-file.


Reproducible: Always


User Profile Reset: Yes

Additional Info:
Version: 26.8.0.0.alpha0+ (X86_64)
Build ID: 501cd23eae78987630d215f560c937774b1d4d8c
CPU threads: 4; OS: Linux 6.19; UI render: default; VCL: gtk3
Locale: nl-NL (nl_NL.UTF-8); UI: en-US
Calc: threaded

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