db-schema

Author SHA1 Message Date

Author	SHA1	Message	Date
Kirill Solomko	907d4d4424	MT#58709 address update_sound_set_handle_parents() sp deadlocks * update_sound_set_handle_parents() procedure is redesigned to avoid "insert into select from" statements as they cause gap locks when run concurrently and access the same index rows. *** WAITING FOR THIS LOCK TO BE GRANTED: RECORD LOCKS space id 6594 page no 6 n bits 56 index parent_id_idx of table `provisioning`.`voip_sound_sets` trx id 400852 lock mode S locks rec but not gap waiting the "insert into select from" statements are reworked: the "select from/with recursive" parts are now declared cursors and the data is inserted inside the opened cursor loop (if any). this way the selects are not causing exclusive gap locks. (cherry picked from commit `4017d3519c`) (cherry picked from commit 9c0fd6e4a1889ddbcbb3a90521dd3e2d3bfe73a5) Change-Id: I35ec28a33ecca42de898e67a2709eda4364e5f95	3 years ago

Kirill Solomko

MT#58709 address update_sound_set_handle_parents() sp deadlocks

* update_sound_set_handle_parents() procedure is redesigned
  to avoid "insert into select from" statements as they cause
  gap locks when run concurrently and access the same index
  rows.

*** WAITING FOR THIS LOCK TO BE GRANTED:
RECORD LOCKS space id 6594 page no 6 n bits 56 index parent_id_idx
of table `provisioning`.`voip_sound_sets` trx id 400852
lock mode S locks rec but not gap waiting

  the "insert into select from" statements are reworked:
   the "select from/with recursive" parts are now declared cursors
   and the data is inserted inside the opened cursor loop (if any).
   this way the selects are not causing exclusive gap locks.

(cherry picked from commit 4017d3519c)
(cherry picked from commit 9c0fd6e4a1889ddbcbb3a90521dd3e2d3bfe73a5)

Change-Id: I35ec28a33ecca42de898e67a2709eda4364e5f95

1 Commits (907d4d4424bb7968241fac1e3e035ca31807bed1)