Hi, The first exception should be only logged on info level. It's expected to see this exception when a TaskManager unregisters from the ResourceManager.
Heartbeats can be configured via heartbeat.interval and hearbeat.timeout [1]. The default timeout is 50s, which should be a generous value. It is probably a good idea to find out why the heartbeats cannot be answered by the TM. Best, Gary [1] https://ci.apache.org/projects/flink/flink-docs-release-1.5/ops/config.html#heartbeat-manager On Sun, Jul 22, 2018 at 1:36 AM, Vishal Santoshi <vishal.santo...@gmail.com> wrote: > 2 issues we are seeing on 1.5.1 on a streaming pipe line > > org.apache.flink.util.FlinkException: The assigned slot > 208af709ef7be2d2dfc028ba3bbf4600_10 was removed. > > > and > > java.util.concurrent.TimeoutException: Heartbeat of TaskManager with id > 208af709ef7be2d2dfc028ba3bbf4600 timed out. > > > Not sure about the first but how do we increase the heartbeat interval of > a TM > > Thanks much > > Vishal >