adrianmo opened a new issue #1905: Masquerading ZK errors as generic ZKException URL: https://github.com/apache/bookkeeper/issues/1905 **BUG REPORT** 1. Please describe the issue you observed: - What did you do? We are in the process of updating BookKeeper dependency in Pravega from 4.5.0 to 4.7.3. In some tests, we try to create a Znode in a path that doesn't exist and expect to receive an exception accordingly. - What did you expect to see? We expect to see a [`KeeperException.NoNodeException`](https://github.com/apache/zookeeper/blob/branch-3.5/zookeeper-server/src/main/java/org/apache/zookeeper/KeeperException.java#L118), which is the original error thrown by the ZK client and it was preserved by BK 4.5. - What did you see instead? Instead of a `NoNodeException`, we get the following. ``` org.apache.bookkeeper.client.BKException$ZKException: Error while using ZooKeeper at org.apache.bookkeeper.discover.ZKRegistrationClient.lambda$getChildren$0(ZKRegistrationClient.java:212) at org.apache.bookkeeper.zookeeper.ZooKeeperClient$25$1.processResult(ZooKeeperClient.java:1174) at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:619) at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:499) ``` Looking at the code, it seems that BK is ignoring the return/error code from ZK and rethrowing a generic `ZKException` in https://github.com/apache/bookkeeper/blob/branch-4.7/bookkeeper-server/src/main/java/org/apache/bookkeeper/discover/ZKRegistrationClient.java#L211.
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