This table provides information about NDB database objects which cannot be automatically synchronized between NDB Cluster's dictionary and the MySQL data dictionary.
Example information about NDB database objects which cannot be synchronized with the MySQL data dictionary:
mysql> SELECT * FROM performance_schema.ndb_sync_excluded_objects\G
*************************** 1. row ***************************
SCHEMA_NAME: NULL
NAME: lg1
TYPE: LOGFILE GROUP
REASON: Injected failure
*************************** 2. row ***************************
SCHEMA_NAME: NULL
NAME: ts1
TYPE: TABLESPACE
REASON: Injected failure
*************************** 3. row ***************************
SCHEMA_NAME: db1
NAME: NULL
TYPE: SCHEMA
REASON: Injected failure
*************************** 4. row ***************************
SCHEMA_NAME: test
NAME: t1
TYPE: TABLE
REASON: Injected failure
*************************** 5. row ***************************
SCHEMA_NAME: test
NAME: t2
TYPE: TABLE
REASON: Injected failure
*************************** 6. row ***************************
SCHEMA_NAME: test
NAME: t3
TYPE: TABLE
REASON: Injected failure
The ndb_sync_excluded_objects table has these columns:
SCHEMA_NAME: The name of the schema (database) in which the object which has failed to synchronize resides; this is NULL for tablespaces and log file groups
NAME: The name of the object which has failed to synchronize; this is NULL if the object is a schema
TYPE: The type of the object has failed to synchronize; this is one of LOGFILE GROUP, TABLESPACE, SCHEMA, or TABLE
REASON: The reason for exclusion (blocklisting) of the object; that is, the reason for the failure to synchronize this object
Possible reasons include the following:
Injected failure
Failed to determine if object existed in NDB
Failed to determine if object existed in DD
Failed to drop object in DD
Failed to get undofiles assigned to logfile group
Failed to get object id and version
Failed to install object in DD
Failed to get datafiles assigned to tablespace
Failed to create schema
Failed to determine if object was a local table
Failed to invalidate table references
Failed to set database name of NDB object
Failed to get extra metadata of table
Failed to migrate table with extra metadata version 1
Failed to get object from DD
Definition of table has changed in NDB Dictionary
Failed to setup binlogging for table
This list is not necessarily exhaustive, and is subject to change in future NDB releases.
The ndb_sync_excluded_objects table was added in NDB 8.0.21.