• LAST_HEARTBEAT_TIMESTAMP 

A timestamp in ’ YYYY-MM-DD hh:mm:ss [. fraction ]’  format that shows when the most recent heartbeat signal was received by a replica. 

• COUNT_RECEIVED_HEARTBEATS 

The total number of heartbeat signals that a replica received since the last time it was restarted or reset, or a CHANGE REPLICATION SOURCE TO  | CHANGE MASTER TO  statement was issued. 

• LAST_QUEUED_TRANSACTION 

The global transaction ID (GTID) of the last transaction that was queued to the relay log. 

• LAST_QUEUED_TRANSACTION_ORIGINAL_COMMIT_TIMESTAMP 

A timestamp in ’ YYYY-MM-DD hh:mm:ss [. fraction ]’  format that shows when the last transaction queued in the relay log was committed on the original source. 

• LAST_QUEUED_TRANSACTION_IMMEDIATE_COMMIT_TIMESTAMP 

A timestamp in ’ YYYY-MM-DD hh:mm:ss [. fraction ]’  format that shows when the last transaction queued in the relay log was committed on the immediate source. 

• LAST_QUEUED_TRANSACTION_START_QUEUE_TIMESTAMP 

A timestamp in ’ YYYY-MM-DD hh:mm:ss [. fraction ]’  format that shows when the last transaction was placed in the relay log queue by this I/O thread. 

• LAST_QUEUED_TRANSACTION_END_QUEUE_TIMESTAMP 

A timestamp in ’ YYYY-MM-DD hh:mm:ss [. fraction ]’  format that shows when the last transaction was queued to the relay log files. 

• QUEUEING_TRANSACTION 

The global transaction ID (GTID) of the currently queueing transaction in the relay log. 

• QUEUEING_TRANSACTION_ORIGINAL_COMMIT_TIMESTAMP 

A timestamp in ’ YYYY-MM-DD hh:mm:ss [. fraction ]’  format that shows when the currently queueing transaction was committed on the original source. 

• QUEUEING_TRANSACTION_IMMEDIATE_COMMIT_TIMESTAMP 

A timestamp in ’ YYYY-MM-DD hh:mm:ss [. fraction ]’  format that shows when the currently queueing transaction was committed on the immediate source. 

• QUEUEING_TRANSACTION_START_QUEUE_TIMESTAMP 

A timestamp in ’ YYYY-MM-DD hh:mm:ss [. fraction ]’  format that shows when the first event of the currently queueing transaction was written to the relay log by this I/O thread. 

When the Performance Schema is disabled, local timing information is not collected, so the fields showing the start and end timestamps for queued transactions are zero. 

The replication_connection_status  table has these indexes: 

•Primary key on ( CHANNEL_NAME ) 

