Antoine DESSAIGNE created ZOOKEEPER-3725:
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Summary: Zookeeper fails to establish quorum with 2 servers using
3.5.6
Key: ZOOKEEPER-3725
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3725
Project: ZooKeeper
Issue Type: Bug
Affects Versions: 3.5.6
Reporter: Antoine DESSAIGNE
Attachments: failure-3.5.6.txt, success-3.4.14.txt, success-3.5.6.txt
Hello everyone,
We noticed that with Zookeeper 3.5.6, it fails to establish quorum on a new
deployment on a regular basis (approx 50% of the time)
We were able to reduce the reproduction steps to the bare minimum we could.
Consider the following docker-compose.yml file
{noformat}
version: '2'
services:
orchestrator1.cameltest.int:
image: zookeeper:3.5.6
environment:
ZOO_MY_ID: 1
ZOO_SERVERS: server.1=0.0.0.0:2888:3888
server.2=orchestrator2.cameltest.int:2888:3888
orchestrator2.cameltest.int:
image: zookeeper:3.5.6
environment:
ZOO_MY_ID: 2
ZOO_SERVERS: server.1=orchestrator1.cameltest.int:2888:3888
server.2=0.0.0.0:2888:3888
{noformat}
When launching it (with {{docker-compose up}}) it fails half of the time with
3.5.6 and never in 3.4.14.
You'll find attached 3 logs:
* a failure one using 3.5.6
* a success one using 3.5.6
* a success one 3.4.14
I don't think it's related to some docker/docker-compose issue (as it's working
using 3.4.14 on the same server)
I'll try to check each intermediate release to pin a more specific version.
Unfortunately, I don't know yet my way in the Zookeeper code, what can I do to
help? Thanks!
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