Exam 1z0-908 topic 1 question 62 discussion

Actual exam question from Oracle's 1z0-908

Question #: 62
Topic #: 1

[All 1z0-908 Questions]

What does the binlog dump thread do?

A. It monitors and schedules the rotation/deletion of the binary logs.
B. It reads the relay log and executes the events contained in them.
C. It acquires a lock on the binary log for reading each event to be sent to the slave.
D. It connects to the master and asks it to send updates recorded in its binary logs.

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Suggested Answer: D 🗳️

by HSong at July 20, 2023, 1:40 p.m.

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marklv

10 months ago

correct, C

upvoted 1 times

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HSong

11 months, 2 weeks ago

Selected Answer: C

Answer is C Binary log dump thread. The source creates a thread to send the binary log contents to a replica when the replica connects. This thread can be identified in the output of SHOW PROCESSLIST on the source as the Binlog Dump thread. The binary log dump thread acquires a lock on the source's binary log for reading each event that is to be sent to the replica. As soon as the event has been read, the lock is released, even before the event is sent to the replica. https://dev.mysql.com/doc/refman/8.0/en/replication-threads.html

upvoted 2 times

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