arshadmohammad opened a new issue, #3101:
URL: https://github.com/apache/helix/issues/3101
### Describe the bug
When enabling Kerberos authentication for Zookeeper, the Helix Controller
fails to start due to a timeout in the Zookeeper client connection. The client
transitions to the SaslAuthenticated state instead of SyncConnected, causing
the waitForEstablishedSession method to timeout.
### Observed Behavior:
2026/02/19 10:37:12.994 ERROR [HelixControllerMain] [main] Exception while
starting controller
org.apache.helix.zookeeper.zkclient.exception.ZkTimeoutException: Waiting to
be connected to ZK server has timed out.
at
org.apache.helix.zookeeper.zkclient.ZkClient.waitForEstablishedSession(ZkClient.java:1990)
at
org.apache.helix.manager.zk.ZKHelixManager.createClient(ZKHelixManager.java:775)
at
org.apache.helix.manager.zk.ZKHelixManager.connect(ZKHelixManager.java:817)
at
org.apache.helix.controller.HelixControllerMain.startHelixController(HelixControllerMain.java:159)
at
org.apache.pinot.controller.helix.core.util.HelixSetupUtils.setupHelixController(HelixSetupUtils.java:131)
### To Reproduce
1.Enable Kerberos authentication for Zookeeper.
2. Start the Helix Controller.
### Expected behavior
The controller should recognize SaslAuthenticated as a valid connected state
and proceed with startup.
### Additional context
See: https://github.com/apache/pinot/issues/17729 for more details.
Environment:
Apache Pinot Controller: version 1.4.0
Helix. 1.3.2
Zookeeper with Kerberos authentication enabled: 3.9.3
### Root Cause:
The waitForEstablishedSession method only recognizes SyncConnected as a
valid state, ignoring SaslAuthenticated, which leads to a timeout.
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