ITPUB

Jan 26, 2024 · Operations

Zookeeper 3.4.x Election Port 3888 Failure: Root Cause and Fix

A five‑node Zookeeper cluster on version 3.4.6 experienced election‑port 3888 failures after normal restarts, traced to a NegativeArraySizeException caused by malformed packets from a security scan, and the issue is resolved by upgrading to Zookeeper 3.4.7.