[
https://issues.apache.org/jira/browse/KAFKA-1050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13761970#comment-13761970
]
Neha Narkhede commented on KAFKA-1050:
--------------------------------------
For 2, we have KAFKA-1028 filed and I had some initial work going on it. Let me
clean it up and upload a patch.
>> Does the leader count in "request.required.acks"?
Yes.
> Support for "no data loss" mode
> -------------------------------
>
> Key: KAFKA-1050
> URL: https://issues.apache.org/jira/browse/KAFKA-1050
> Project: Kafka
> Issue Type: Task
> Reporter: Justin SB
>
> I'd love to use Apache Kafka, but for my application data loss is not
> acceptable. Even at the expense of availability (i.e. I need C not A in CAP).
> I think there are two things that I need to change to get a quorum model:
> 1) Make sure I set request.required.acks to 2 (for a 3 node cluster) or 3
> (for a 5 node cluster) on every request, so that I can only write if a quorum
> is active.
> 2) Prevent the behaviour where a non-ISR can become the leader if all ISRs
> die. I think this is as easy as tweaking
> core/src/main/scala/kafka/controller/PartitionLeaderSelector.scala,
> essentially to throw an exception around line 64 in the "data loss" case.
> I haven't yet implemented / tested this. I'd love to get some input from the
> Kafka-experts on whether my plan is:
> (a) correct - will this work?
> (b) complete - have I missed any cases?
> (c) recommended - is this a terrible idea :-)
> Thanks for any pointers!
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
