Nvm i found it. Backpressure caused by aws RDS instance of mysql.
-- View this message in context: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Checkpoints-very-slow-with-high-backpressure-tp12762p13468.html Sent from the Apache Flink User Mailing List archive. mailing list archive at Nabble.com.
