Francois Visconte created KAFKA-13872:
-----------------------------------------
Summary: Partitions are truncated when leader is replaced
Key: KAFKA-13872
URL: https://issues.apache.org/jira/browse/KAFKA-13872
Project: Kafka
Issue Type: Bug
Affects Versions: 2.7.2
Reporter: Francois Visconte
Attachments: extract-2022-05-04T15_50_34.110Z.csv
Sample setup:
* a topic with one partition and RF=3
* a producer using acks=1
* min.insync.replicas to 1
* 3 brokers 1,2,3
* Preferred leader of the partition is brokerId 0
Steps to reproduce the issue
* Producer keeps producing to the partition, leader is brokerId=0
* At some point, replicas 1 and 2 are falling behind and removed from the ISR
* The leader broker 0 has an hardware failure
* Partition transition to offline
* This leader is replaced with a new broker with an empty disk and the same
broker id 0
* Partition transition from offline to online with leader 0, ISR = 0
* Followers see the leader offset is 0 and decide to truncate their partitions
to 0, ISR=0,1,2
Attached some of the relevant logs. I can provide more logs if necessary
--
This message was sent by Atlassian Jira
(v8.20.7#820007)
