Randgalt commented on a change in pull request #3266:
URL: https://github.com/apache/hadoop/pull/3266#discussion_r683400351
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File path:
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/token/delegation/ZKDelegationTokenSecretManager.java
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@@ -363,105 +357,122 @@ public void startThreads() throws IOException {
throw new RuntimeException("Could not create ZK paths");
}
try {
- keyCache = new PathChildrenCache(zkClient, ZK_DTSM_MASTER_KEY_ROOT,
true);
+ keyCache = CuratorCache.bridgeBuilder(zkClient, ZK_DTSM_MASTER_KEY_ROOT)
+ .build();
if (keyCache != null) {
- keyCache.start(StartMode.BUILD_INITIAL_CACHE);
- keyCache.getListenable().addListener(new PathChildrenCacheListener() {
- @Override
- public void childEvent(CuratorFramework client,
- PathChildrenCacheEvent event)
- throws Exception {
- switch (event.getType()) {
- case CHILD_ADDED:
- processKeyAddOrUpdate(event.getData().getData());
- break;
- case CHILD_UPDATED:
- processKeyAddOrUpdate(event.getData().getData());
- break;
- case CHILD_REMOVED:
- processKeyRemoved(event.getData().getPath());
- break;
- default:
- break;
- }
- }
- }, listenerThreadPool);
+ CuratorCacheListener keyCacheListener = CuratorCacheListener.builder()
+ .forCreates(childData -> {
Review comment:
Note: there is a `forCreatesAndChanges()`
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