Still failing in only Python36/37 but Python38 passed (https://ci-beam.apache.org/job/beam_PostCommit_Python38/1068/)
Based on logs, looks like a timeout issue:
Pipeline BeamApp-jenkins-0407001313-35b6318_3e9ceaf5-5a39-448b-92aa-ff7232bc574b failed in state FAILED: akka.pattern.AskTimeoutException: Ask timed out on Actor[akka://flink/user/rpc/taskmanager_0#-360796232]] after [10000 ms]. Message of type [org.apache.flink.runtime.rpc.messages.LocalRpcInvocation]. A typical reason for `AskTimeoutException` is that the recipient actor didn't send a reply.