org.apache.flink.runtime.executiongraph.restart

Interface RestartStrategy

All Known Implementing Classes:

FailureRateRestartStrategy, FixedDelayRestartStrategy, NoRestartStrategy, ThrowingRestartStrategy

public interface RestartStrategy

Strategy for ExecutionGraph restarts.

Method Summary

Modifier and Type	Method and Description
boolean	canRestart() True if the restart strategy can be applied to restart the ExecutionGraph.
CompletableFuture<Void>	restart(RestartCallback restarter, ScheduledExecutor executor) Called by the ExecutionGraph to eventually trigger a full recovery.

Method Detail

canRestart

boolean canRestart()

True if the restart strategy can be applied to restart the ExecutionGraph.

Returns:

true if restart is possible, otherwise false

restart

CompletableFuture<Void> restart(RestartCallback restarter,
                                ScheduledExecutor executor)

Called by the ExecutionGraph to eventually trigger a full recovery. The recovery must be triggered on the given callback object, and may be delayed with the help of the given scheduled executor.

The thread that calls this method is not supposed to block/sleep.

Parameters:

restarter - The hook to restart the ExecutionGraph

executor - An scheduled executor to delay the restart

Returns:

A CompletableFuture that will be completed when the restarting process is done.