unique key columns is not a subset of shared columns in BuildDMLUpdateQuery on JSON table #1000
Description
Hi
we run gh-ost on MySQL 8.0.22 and got the following error when an UPDATE statement is performed on the table while ghost is running:
ERROR unique key columns is not a subset of shared columns in BuildDMLUpdateQuery
This is the scenario:
CREATE TABLE `test` (
`main_id` varbinary(16) NOT NULL,
`sub_id` varchar(36) CHARACTER SET latin1 COLLATE latin1_swedish_ci GENERATED ALWAYS AS (jsonbody->>'$._id') STORED NOT NULL,
`jsonbody` json NOT NULL,
PRIMARY KEY (`main_id`,`sub_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ROW_FORMAT=COMPRESSED
INSERT INTO test (main_id, jsonbody)
VALUES (x'F2C45C49175845FCB062D579DFB6CE1D','{"_id":"c1192a0c-b1b8-4b86-adb5-19f40a869f3f","name":"apple"}');
while gh-ost is running, run any update on the table, for example:
UPDATE test
SET jsonbody=JSON_OBJECT('_id', 'c1192a0c-b1b8-4b86-adb5-19f40a869f3f', 'name', 'carrot')
WHERE main_id=x'F2C45C49175845FCB062D579DFB6CE1D'
AND sub_id='c1192a0c-b1b8-4b86-adb5-19f40a869f3f';
and gh-ost throws:
ERROR unique key columns is not a subset of shared columns in BuildDMLUpdateQuery
The gh-st command that was run is:
/usr/bin/gh-ost
--max-load=Threads_running=500
--critical-load=Threads_running=1000
--initially-drop-ghost-table
--initially-drop-old-table
--chunk-size=600
--max-lag-millis=3000
--user=XXXX --password=XXXXX
--assume-master-host=rw_master_1
--throttle-control-replicas=ro_co-master_2
--host=ro_2
--database=test --table=test
--verbose
--alter="modify sub_id VARCHAR(36) CHARACTER SET latin1 COLLATE latin1_general_ci GENERATED ALWAYS AS (jsonbody->>'$._id') STORED NOT NULL"
--assume-rbr
--allow-master-master
--cut-over=default
--concurrent-rowcount
--default-retries=120
--panic-flag-file=/tmp/ghost.panic.flag
--exact-rowcount
--postpone-cut-over-flag-file=/tmp/ghost.postpone.flag
--hooks-path=/opt/mysql/ghostWebHooks
--execute > gh-ost.test.test.log
It seems to be here:
if !uniqueKeyColumns.IsSubsetOf(sharedColumns)
Line 474 in 47d49c6