[HDFS-17270] RBF: Fix ZKDelegationTokenSecretManagerImpl use closed zookeeper client to get token in some case

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: rbf
• Labels: pull-request-available
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed
• Assignee: lei w
• Reporter: lei w
• Created: 01/Dec/23 11:57
• Updated: 28/Jan/24 01:10
• Resolved: 06/Dec/23 13:35

Description

Now, we use CuratorFramework to simplifies using ZooKeeper in ZKDelegationTokenSecretManagerImpl and we always hold the same zookeeperClient after initialization ZKDelegationTokenSecretManagerImpl. But in some cases like network problem , CuratorFramework may close current zookeeperClient and create new one. In this case , we will use a zkclient which has been closed to get token. We encountered this situation in our cluster，exception information in attachment.

Issue Links

• links to: GitHub Pull Request #6315