[SOLR-14312] Upgrade Zookeeper to 3.5.7

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 8.6
• Assignee: Erick Erickson
• Reporter: Erick Erickson
• Created: 08/Mar/20 20:16
• Updated: 15/Jul/20 15:11
• Resolved: 16/Mar/20 02:12

Description

I started looking at upgrading ZK to 3.5.7, and meanwhile 3.6.0 was just released. The 3.5.7 upgrade is pretty painless, just upgrade the version and all tests pass. There have been some third-party CVEs and the like fixed, so it seems worthwhile.

But I've been working on this very gradually while traveling, and meanwhile 3.6.0 just came out. Should we:

1> upgrade to 3.5.7 now and then worry about 3.6.0 after it has some more mileage

2> upgrade to 3.6.0 now

3> do nothing until 3.6.0 has some more mileage on it?

<1> gets my vote

Issue Links

• incorporates: SOLR-14296 Update netty to 4.1.47