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MDEV-25687: Remove trx_active_transactions

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MONITOR_TRX_ACTIVE: Remove. The count is not being updated consistently,
and it would also include read-only transactions that are otherwise
fully invisible to any other threads.

If it later turns out that a reliable count of active transactions
is needed, it can be exposed via a different interface.

trx_commit_for_mysql(): If the transaction was not started, return
immediately.
This commit is contained in:
Marko Mäkelä
2021-05-17 08:37:59 +03:00
parent cdbd04dde5
commit a6cff02a2f
8 changed files with 4 additions and 23 deletions
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mysql-test/suite/innodb/r/innodb_skip_innodb_is_tables.result
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@ -167,7 +167,6 @@ trx_nl_ro_commits transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL N
trx_commits_insert_update transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of transactions committed with inserts and updates
trx_rollbacks transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of transactions rolled back
trx_rollbacks_savepoint transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of transactions rolled back to savepoint
trx_active_transactions transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of active transactions
trx_rseg_history_len transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 value Length of the TRX_RSEG_HISTORY list
trx_undo_slots_used transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of undo slots used
trx_undo_slots_cached transaction 0 NULL NULL NULL 0 NULL NULL NULL NULL NULL NULL NULL 0 counter Number of undo slots cached