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Kafka >> mail # dev >> [jira] [Updated] (KAFKA-513) Add state change log to Kafka brokers


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[jira] [Updated] (KAFKA-513) Add state change log to Kafka brokers

     [ https://issues.apache.org/jira/browse/KAFKA-513?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Neha Narkhede updated KAFKA-513:
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    Labels: p1 replication tools  (was: p2 replication tools)
    
> Add state change log to Kafka brokers
> -------------------------------------
>
>                 Key: KAFKA-513
>                 URL: https://issues.apache.org/jira/browse/KAFKA-513
>             Project: Kafka
>          Issue Type: Sub-task
>    Affects Versions: 0.8
>            Reporter: Neha Narkhede
>            Assignee: Swapnil Ghike
>            Priority: Blocker
>              Labels: p1, replication, tools
>             Fix For: 0.8
>
>         Attachments: kafka-513-v1.patch
>
>   Original Estimate: 96h
>  Remaining Estimate: 96h
>
> Once KAFKA-499 is checked in, every controller to broker communication can be modelled as a state change for one or more partitions. Every state change request will carry the controller epoch. If there is a problem with the state of some partitions, it will be good to have a tool that can create a timeline of requested and completed state changes. This will require each broker to output a state change log that has entries like
> [2012-09-10 10:06:17,280] broker 1 received request LeaderAndIsr() for partition [foo, 0] from controller 2, epoch 1
> [2012-09-10 10:06:17,350] broker 1 completed request LeaderAndIsr() for partition [foo, 0] from controller 2, epoch 1
> On controller, this will look like -
> [2012-09-10 10:06:17,198] controller 2, epoch 1, initiated state change request LeaderAndIsr() for partition [foo, 0]
> We need a tool that can collect the state change log from all brokers and create a per-partition timeline of state changes -
> [foo, 0]
> [2012-09-10 10:06:17,198] controller 2, epoch 1 initiated state change request LeaderAndIsr()
> [2012-09-10 10:06:17,280] broker 1 received request LeaderAndIsr() from controller 2, epoch 1
> [2012-09-10 10:06:17,350] broker 1 completed request LeaderAndIsr() from controller 2, epoch 1
> This JIRA involves adding the state change log to each broker and adding the tool to create the timeline

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