yanghua commented on a change in pull request #7571: [FLINK-10724] Refactor
failure handling in check point coordinator
URL: https://github.com/apache/flink/pull/7571#discussion_r278994671
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/PendingCheckpoint.java
##########
@@ -405,54 +404,30 @@ public void addMasterState(MasterState state) {
//
------------------------------------------------------------------------
/**
- * Aborts a checkpoint because it expired (took too long).
+ * Aborts a checkpoint with reason and cause.
*/
- public void abortExpired() {
+ public void abort(CheckpointFailureReason reason, Throwable cause) {
try {
- Exception cause = new Exception("Checkpoint expired
before completing");
- onCompletionPromise.completeExceptionally(cause);
- reportFailedCheckpoint(cause);
+ CheckpointException exception = new
CheckpointException(reason, cause);
+ onCompletionPromise.completeExceptionally(exception);
+ reportFailedCheckpoint(exception);
+ assertAbortSubsumedForced(reason);
} finally {
dispose(true);
}
}
/**
- * Aborts the pending checkpoint because a newer completed checkpoint
subsumed it.
+ * Aborts a checkpoint with reason and cause.
*/
- public void abortSubsumed() {
- try {
- Exception cause = new Exception("Checkpoints has been
subsumed");
- onCompletionPromise.completeExceptionally(cause);
- reportFailedCheckpoint(cause);
-
- if (props.forceCheckpoint()) {
- throw new IllegalStateException("Bug: forced
checkpoints must never be subsumed");
- }
- } finally {
- dispose(true);
- }
- }
-
-
- public void abortDeclined() {
- abortWithCause(new Exception("Checkpoint was declined (tasks
not ready)"));
- }
-
- /**
- * Aborts the pending checkpoint due to an error.
- * @param cause The error's exception.
- */
- public void abortError(@Nonnull Throwable cause) {
- abortWithCause(new Exception("Checkpoint failed: " +
cause.getMessage(), cause));
+ public void abort(CheckpointFailureReason reason) {
+ abort(reason, null);
}
- private void abortWithCause(@Nonnull Exception cause) {
- try {
- onCompletionPromise.completeExceptionally(cause);
- reportFailedCheckpoint(cause);
- } finally {
- dispose(true);
+ private void assertAbortSubsumedForced(CheckpointFailureReason reason) {
+ if (props.forceCheckpoint()) {
Review comment:
Actually, I agree with the first part of this suggestion. For the second
part, if we assume the behavior of the caller end, I think you are right.
However, it seems a good experience is that we should not assume the caller's
behavior, because it may be changed in the future, right? IMO, We can only
assume someone calls the abort method, it could be
`CheckpointCoordinator#dropSubsumedCheckpoints` or somewhere in a test case. So
I think this method is valuable.
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