Failed: apache/flink#43000 (master - 6936713)

[Flink CI]

apache / flink master Build #43000 failed 2 hrs, 26 mins, 20 secs ifndef-SleePy 6936713 CHANGESET → [FLINK-14971][checkpointing] Remove lock of PendingCheckpoint and introduce IO lock for PendingCheckpoint Since all non-IO operations are executed in main thread, the lock of PendingCheckpoint could be avoided now.