ALTER TABLE ADD INDEX Hangs On "Waiting For Table Metadata Lock"
(Doc ID 2757435.1)
Last updated on MARCH 24, 2021
Applies to:
MySQL Cluster - Version 7.6 and laterInformation in this document applies to any platform.
Symptoms
ALTER TABLE ADD INDEX command hangs on "Waiting for table metadata lock" state. Check bellow:
mysql> show full processlist;
| Id | ... |State |
| 1 | ... |Waiting for table metadata lock | ALTER TABLE t1 ADD INDEX index_id (id)
Changes
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |
| References |