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• Ndb_api_wait_exec_complete_count_replica 

The number of times a thread has been blocked by this replica while waiting for execution of an operation to complete. This includes all execute()  calls as well as implicit executes for blob and auto- increment operations not visible to clients. 

Although this variable can be read using either SHOW GLOBAL STATUS  or SHOW SESSION STATUS , it is effectively global in scope. If this MySQL server does not act as a replica, or does not use NDB tables, this value is always 0. 

For more information, see Section 23.5.13, “NDB API Statistics Counters and Variables” . 

• Ndb_api_wait_exec_complete_count_slave 

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## Note 

Deprecated in NDB 8.0.23; use Ndb_api_wait_exec_complete_count_replica  instead. 

The number of times a thread has been blocked by this replica while waiting for execution of an operation to complete. This includes all execute()  calls as well as implicit executes for blob and auto- increment operations not visible to clients. 

Although this variable can be read using either SHOW GLOBAL STATUS  or SHOW SESSION STATUS , it is effectively global in scope. If this MySQL server does not act as a replica, or does not use NDB tables, this value is always 0. 

For more information, see Section 23.5.13, “NDB API Statistics Counters and Variables” . 

• Ndb_api_wait_exec_complete_count 

The number of times a thread has been blocked by this MySQL Server (SQL node) while waiting for execution of an operation to complete. This includes all execute()  calls as well as implicit executes for blob and auto-increment operations not visible to clients. 

Although this variable can be read using either SHOW GLOBAL STATUS  or SHOW SESSION STATUS , it is effectively global in scope. 

For more information, see Section 23.5.13, “NDB API Statistics Counters and Variables” . 

• Ndb_api_wait_meta_request_count_session 

The number of times a thread has been blocked in this client session waiting for a metadata-based signal, such as is expected for DDL requests, new epochs, and seizure of transaction records. 

Although this variable can be read using either SHOW GLOBAL STATUS  or SHOW SESSION STATUS , it relates to the current session only, and is not affected by any other clients of this mysqld . 

For more information, see Section 23.5.13, “NDB API Statistics Counters and Variables” . 

• Ndb_api_wait_meta_request_count_replica 

The number of times a thread has been blocked by this replica waiting for a metadata-based signal, such as is expected for DDL requests, new epochs, and seizure of transaction records. 

Although this variable can be read using either SHOW GLOBAL STATUS  or SHOW SESSION STATUS , it is effectively global in scope. If this MySQL server does not act as a replica, or does not use NDB tables, this value is always 0. 

