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Between btr_pcur_store_position() and btr_pcur_restore_position() it is possible that purge empties a table and enlarges index->n_core_fields and index->n_core_null_bytes. Therefore, we must cache index->n_core_fields in btr_pcur_t::old_n_core_fields so that btr_pcur_t::old_rec can be parsed correctly. Unfortunately, this is a huge change, because we will replace "bool leaf" parameters with "ulint n_core" (passing index->n_core_fields, or 0 for non-leaf pages). For special cases where we know that index->is_instant() cannot hold, we may also pass index->n_fields. |
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.. | ||
archive | ||
binlog | ||
binlog_encryption | ||
compat | ||
csv | ||
encryption | ||
engines | ||
federated | ||
funcs_1 | ||
funcs_2 | ||
galera | ||
galera_3nodes | ||
gcol | ||
handler | ||
heap | ||
innodb | ||
innodb_fts | ||
innodb_gis | ||
innodb_zip | ||
jp | ||
json | ||
large_tests | ||
maria | ||
mariabackup | ||
mtr/t | ||
mtr2 | ||
multi_source | ||
optimizer_unfixed_bugs | ||
parts | ||
perfschema | ||
perfschema_stress | ||
plugins | ||
roles | ||
rpl | ||
sql_sequence | ||
storage_engine | ||
stress | ||
sys_vars | ||
unit | ||
vcol | ||
versioning | ||
wsrep |