Hi everyone, The speculative execution for batch jobs has been proposed and accepted in FLIP-168[1], as well as the related blocklist mechanism in FLIP-224[2]. As a follow-up step, the Flink Web UI needs to be enhanced to display the related information if the speculative execution mechanism is enabled.
Junhan Yang, Yun Gao and I would like to start the discussion about the Web UI enhancement and the corresponding REST API changes in FLIP-249[3], including: - show the speculative executions in the subtask list and the backpressure page, where the fastest is shown directly while others are folded; - show the number of the blocked task managers in the Task Managers and Slots card, when the number is not 0; - show the BLOCKED label in the task manager list and the task manager detail page for the blocked task managers. All changes expect to be transparent to users who don’t use speculative execution. Please see the FLIP page[3] for more details. Looking forward to your feedback. [1] https://cwiki.apache.org/confluence/display/FLINK/FLIP-168%3A+Speculative+Execution+for+Batch+Job [2] https://cwiki.apache.org/confluence/display/FLINK/FLIP-224%3A+Blocklist+Mechanism [3] https://cwiki.apache.org/confluence/display/FLINK/FLIP-249%3A+Flink+Web+UI+Enhancement+for+Speculative+Execution
