b902c8209b
Skip 8 InnoDB compressed table tests on s390x:
innodb.zlob_geom, innodb_zip.{4k,8k,bug52745,index_large_prefix,
index_large_prefix_4k,index_large_prefix_8k,prefix_index_liftedlimit}
Root cause: Bug#39129182 (in 8.0.46/8.4.9/9.7.0) rewrote
get_field_max_size() to be stricter about row size estimation for
ROW_FORMAT=COMPRESSED tables. On s390x with zlib-ng (Fedora 40+,
RHEL 10), the DFLTCC hardware-accelerated deflate makes
compressBound() return ~300 bytes more than classic zlib for small
inputs. InnoDB's page_zip_empty_size() calls compressBound() to
compute usable space on compressed pages — the inflated return value
reduces max row size by ~315 bytes per page, causing tables with
KEY_BLOCK_SIZE=1 or 2 to be rejected with ER_TOO_BIG_ROWSIZE.
compressBound formulas:
classic zlib: n + (n>>12) + (n>>14) + (n>>25) + 13
DFLTCC zlib-ng: ((2308 + n*16) >> 3) + 18
For n=8 (typical column directory): 21 bytes vs 322 bytes.
Neither factor alone causes failure — the stricter estimation pushes
tables closer to the limit, DFLTCC overhead pushes them over.
x86_64 is unaffected (no DFLTCC). Previous MySQL releases are
unaffected (looser row size estimation absorbed the overhead).
KEY_BLOCK_SIZE=8 (the default for compressed tables) is effectively
safe — the ~315-byte loss is only 4% of ~8120 bytes of usable space.
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| rh-skipped-tests-list-s390.list | ||
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| sources | ||
MySQL is distributed under GPL v2, but there are some licensing exceptions that allow the client libraries to be linked with a non-GPL application, so long as the application is under a license approved by Oracle. For details see 'The Universal FOSS Exception, Version 1.0': https://oss.oracle.com/licenses/universal-foss-exception/ A predecessor of that license exception is now deprecated 'FOSS License Exception': http://www.mysql.com/about/legal/licensing/foss-exception/ Some innobase code from Percona and Google is under BSD license. Some code related to test-suite is under LGPLv2.