[ https://issues.apache.org/jira/browse/SPARK-24581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jiang Xingbo resolved SPARK-24581. ---------------------------------- Resolution: Fixed > Design: BarrierTaskContext.barrier() > ------------------------------------ > > Key: SPARK-24581 > URL: https://issues.apache.org/jira/browse/SPARK-24581 > Project: Spark > Issue Type: Story > Components: ML, Spark Core > Affects Versions: 3.0.0 > Reporter: Xiangrui Meng > Assignee: Jiang Xingbo > Priority: Major > > We need to provide a communication barrier function to users to help > coordinate tasks within a barrier stage. This is very similar to MPI_Barrier > function in MPI. This story is for its design. > > Requirements: > * Low-latency. The tasks should be unblocked soon after all tasks have > reached this barrier. The latency is more important than CPU cycles here. > * Support unlimited timeout with proper logging. For DL tasks, it might take > very long to converge, we should support unlimited timeout with proper > logging. So users know why a task is waiting. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org