Apache ZooKeeper 3.4 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Apache ZooKeeper 3.4 reached end of life on 1 Jun 2020. It no longer receives security fixes.
Support timeline
Official dates from the Apache ZooKeeper release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 23 Nov 2011 | — |
| End of life | 1 Jun 2020 | 6.2 years ago |
| Active support ended | 27 Mar 2020 | security fixes only after this |
| Latest release | 3.4.14 · 1 Apr 2019 | final |
Where to go from 3.4
Recommended target: Apache ZooKeeper 3.9.
The newest actively supported branch is Apache ZooKeeper 3.9 (latest release 3.9.5).
Frequently asked questions
Is Apache ZooKeeper 3.4 still safe to use?
Apache ZooKeeper 3.4 reached end of life on 1 Jun 2020, 2,260 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Apache ZooKeeper 3.4?
Yes — the final release (3.4.14) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Apache ZooKeeper 3.4 to?
Upgrade to Apache ZooKeeper 3.9, the newest actively supported branch.