Github user arshadmohammad commented on a diff in the pull request:
https://github.com/apache/zookeeper/pull/279#discussion_r126481060
--- Diff: src/java/main/org/apache/zookeeper/ZooKeeper.java ---
@@ -1436,7 +1436,7 @@ public String create(final String path, byte data[],
List<ACL> acl,
request.setData(data);
request.setFlags(createMode.toFlag());
request.setPath(serverPath);
- if (acl != null && acl.size() == 0) {
+ if (acl == null || acl.isEmpty() || acl.contains(null)) {
--- End diff --
These validations should also be applied on async create APIs
1. org.apache.zookeeper.ZooKeeper.create(String, byte[], List<ACL>,
CreateMode, Create2Callback, Object, long)
2. org.apache.zookeeper.ZooKeeper.create(String, byte[], List<ACL>,
CreateMode, StringCallback, Object)
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