Hello,

there is no way to manually trigger checkpoints or configure irregular intervals.


You will have to modify the CheckpointCoordinator <https://github.com/apache/flink/blob/master/flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/CheckpointCoordinator.java> and build Flink from source:

 * startCheckpointScheduler() should only schedule a one-time execution
   of the trigger
 * ScheduledTrigger#run() should reschedule itself
     o Something like:
         + triggerCheckpoint(System.currentTimeMillis(), true);
         + long msUntilNextCheckpoint = // insert logic here
         + timer.schedule(new ScheduledTrigger(),
           msUntilNextCheckpoint, TimeUnit.MILLISECONDS)

On 11.04.2018 05:15, syed wrote:
I am new to the flink environment and looking to analyze the triggering of
checkpoints. I am looking to trigger non-periodic checkpoints such that
checkpoint intervals are not of equal length, but not sure how can I do this
in Flink.

My specific query is;

(1) How can I trigger non-periodic checkpoints in Flink? I am looking to
trigger first checkpoint say after 10 seconds, the next checkpoint at say 25
seconds, third at 45 seconds and so on. Can I define my own function which
triggers non-periodic checkpoints and generates no-uniform checkpoint
intervals?
Thanks.




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