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Clarify a comment after MDEV-15061

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This commit is contained in:
Marko Mäkelä 2018-02-04 13:11:49 +02:00
parent c8299e6278
commit d6ed077fc8
1 changed files with 5 additions and 2 deletions
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7
storage/innobase/lock/lock0lock.cc
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@ -5853,8 +5853,11 @@ lock_rec_block_validate(
buf_block_t* block; buf_block_t* block;
mtr_t mtr; mtr_t mtr;
/* Make sure that the tablespace is not deleted while we are /* Transactional locks should never refer to dropped
trying to access the page. */ tablespaces, because all DDL operations that would drop or
discard or rebuild a tablespace do hold an exclusive table
lock, which would conflict with any locks referring to the
tablespace from other transactions. */
if (fil_space_t* space = fil_space_acquire(space_id)) { if (fil_space_t* space = fil_space_acquire(space_id)) {
dberr_t err = DB_SUCCESS; dberr_t err = DB_SUCCESS;
mtr_start(&mtr); mtr_start(&mtr);