Curator ( Zookeeper ) warning about Container nodes

[cbeach47]

Describe the bug On start up in a cluster environment, curator logs the following warning in oEQ:

2020-12-22 20:38:31,910 [WARN] [app1] [Curator-PathChildrenCache-3:org.apache.curator.utils.ZKPaths.<clinit>()] - The version of ZooKeeper being used doesn't support Container nodes. CreateMode.PERSISTENT will be used instead.

To Reproduce

Steps to reproduce the behavior:

1. Standard clustered env (2 oEQ (2020.1.6) nodes, 3 ZK (3.4.10) nodes)
2. Start up ZK nodes
3. Start up oEQ
4. Note warning in oEQ log

Expected behavior

Possibly not to have the warning present OR an understanding that this is not an issue.

Platform:

• OpenEquella Version: [at least 2020.1.6]
• Zookeeper 3.4.10 (at least)
• OS: [Linux]
• Browser [Agnostic]

Additional context

• The version of curator and zookeeper haven't changed from 2020.1.0 to 2020.1.6, so likely an issue for a while
• The cpu / memory doesn't look to grow
• The watches (via the 4LW wchc ) on zookeeper don't seem excessive
• These folks are concerned about it - https://issues.apache.org/jira/browse/CURATOR-274

[cbeach47]

The curator link could be an older, resolved issue - oEQ uses curator 2.13.0.

[edalex-ian]

Have you seen an issue/side effect from this though?

Personally I've not come across anything in our dev clusters, and haven't heard anything from our hosting team.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[edalex-ian]

We're hoping to revisit the upgrading of Apache Curator in 2022.1 so will look at this then as well.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[edalex-ian]

See also #114