Message in Error Log After Upgrade to 5.7.11 "While initializing dump thread for slave with UUID ... found a zombie dump thread with the same UUID. Master is killing the zombie dump thread" (Doc ID 2128057.1)

Last updated on FEBRUARY 07, 2017

Applies to:

MySQL Server - Version 5.7 and later
Information in this document applies to any platform.

Symptoms

 After upgrade to 5.7 replication setup shows many messages in Error log like below:

2016-04-07T10:11:04.154101Z 400 [Note] While initializing dump thread for slave with UUID <211a11e1-e1e1-77e2-a5ba-11505683470a>, found a zombie dump thread with the same UUID. Master is killing the zombie dump thread.

Changes

Default value of slave_net_timeout was decreased down to 60 in MySQL 5.7.

Cause

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