This article documents thread states that are related to replication master threads. These correspond to the STATE values listed by the SHOW PROCESSLIST statement or in the Information Schema PROCESSLIST Table as well as the PROCESSLIST_STATE value listed in the Performance Schema threads Table.
| Value | Description |
|---|---|
| Finished reading one binlog; switching to next binlog | After completing one binary log, the next is being opened for sending to the slave. |
| Master has sent all binlog to slave; waiting for binlog to be updated | All events have been read from the binary logs and sent to the slave. Now waiting for the binary log to be updated with new events. |
| Sending binlog event to slave | An event has been read from the binary log, and is now being sent to the slave. |
| Waiting to finalize termination | State that only occurs very briefly while the thread is terminating. |
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https://mariadb.com/kb/en/master-thread-states/