db-schema

Author SHA1 Message Date

Author	SHA1	Message	Date
Kirill Solomko	cb597eacd3	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. Change-Id: I35ec28a33ecca42de898e67a2709eda4364e5f95 (cherry picked from commit `4017d3519c`) (cherry picked from commit 9c0fd6e4a1889ddbcbb3a90521dd3e2d3bfe73a5)	1 year 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.

Change-Id: I35ec28a33ecca42de898e67a2709eda4364e5f95
(cherry picked from commit 4017d3519c)
(cherry picked from commit 9c0fd6e4a1889ddbcbb3a90521dd3e2d3bfe73a5)

1 Commits (3dcc7bd7c5abea011998e4c68a9fd523996f3091)