[jira] [Updated] (KAFKA-6206) Enhance Kafka to allow a leader to be blacklisted if it fails to read/write beyond a configurable baseline

["Macoy Jones (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-6206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Macoy Jones updated KAFKA-6206:
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    Summary: Enhance Kafka to allow a leader to be blacklisted if it fails to read/write beyond a configurable baseline  (was: Kafka processes ignore read/write performance and reliability)

> Enhance Kafka to allow a leader to be blacklisted if it fails to read/write beyond a configurable baseline
> ----------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-6206
>                 URL: https://issues.apache.org/jira/browse/KAFKA-6206
>             Project: Kafka
>          Issue Type: Improvement
>          Components: replication
>    Affects Versions: 0.9.0.0, 0.10.0.0
>         Environment: RHEL 6.8
>            Reporter: Macoy Jones
>            Priority: Minor
>
> According to the documentation, for a leader to be considered alive, it must be able to maintain its session with ZooKeeper via ZooKeeper's heartbeat mechanism. 
> As this criteria stands, a leader will continue to attempt to fulfill the read/write requests for in-sync replicas without taking into account resource availablity, performance factors, or hardware/application health. This introduces the risk of unchecked degradation to the performance and/or reliability of data read/write operations to a subset of data sources in the event of a server problem, and the risk grows with partition leader density
> A viable solution to this may be some type of logic that allows a leader to be blacklisted as such if it fails to read/write beyond a configurable baseline.



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