zentol commented on a change in pull request #19191:
URL: https://github.com/apache/flink/pull/19191#discussion_r831163556
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/ZooKeeperCheckpointIDCounter.java
##########
@@ -118,11 +122,46 @@ public void start() throws Exception {
if (jobStatus.isGloballyTerminalState()) {
LOG.info("Removing {} from ZooKeeper", counterPath);
+ final CompletableFuture<Void> deletionFuture = new
CompletableFuture<>();
try {
- client.delete().inBackground().forPath(counterPath);
+ client.delete()
+ .inBackground(
+ (curatorFramework, curatorEvent) -> {
+ Preconditions.checkArgument(
+ curatorEvent.getType()
+ ==
CuratorEventType.DELETE,
+ "An unexpected
CuratorEvent was monitored: "
+ +
curatorEvent.getType());
+ Preconditions.checkArgument(
+
counterPath.equals(curatorEvent.getPath()),
+ "An unexpected path was
selected for deletion: "
+ +
curatorEvent.getPath());
+
+ final KeeperException.Code
eventCode =
+ KeeperException.Code.get(
+
curatorEvent.getResultCode());
+ if (Sets.immutableEnumSet(
+
KeeperException.Code.OK,
+
KeeperException.Code.NONODE)
+ .contains(eventCode)) {
+ deletionFuture.complete(null);
+ } else {
+
deletionFuture.completeExceptionally(
+ KeeperException.create(
+
KeeperException.Code.get(
+
curatorEvent
+
.getResultCode())));
Review comment:
Can you give an example for how this will look like in practice?
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