amcheck: Support for different header sizes of short varlena datum
In the heap, tuples may contain short varlena datum with both 1B header and 4B
headers. But the corresponding index tuple should always have such varlena's
with 1B headers. So, for fingerprinting, we need to convert.
Backpatch to all supported versions.
Discussion: https://postgr.es/m/flat/7bdbe559-d61a-4ae4-a6e1-48abdf3024cc%40postgrespro.ru
Author: Michael Zhilin
Reviewed-by: Alexander Lakhin, Andrey Borodin, Jian He, Alexander Korotkov
Backpatch-through: 12
Branch
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REL_14_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/5df5d9cd7ea4f40f6e3efec650bdc7615b6d16ed
Modified Files
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contrib/amcheck/expected/check_btree.out | 13 ++++++++++++
contrib/amcheck/sql/check_btree.sql | 11 ++++++++++
contrib/amcheck/verify_nbtree.c | 36 +++++++++++++++++++++++++++-----
3 files changed, 55 insertions(+), 5 deletions(-)