Hi, Szczypiński Do you have noticed the size of the maxDirectMemorySize in your taskamanger jvm options， AFAIK the total memory one Taskmanager used is the (heap memory + directMemory) which may larger than the heap size specified by -Xmx?
Best wishes Aitozi -- Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
