[jira] [Updated] (KAFKA-8465) Make sure that the copy of the same topic is evenly distributed across a broker's disk.

[ChenLin (JIRA)]

     [ 
https://issues.apache.org/jira/browse/KAFKA-8465?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

ChenLin updated KAFKA-8465:
---------------------------
    Summary: Make sure that the copy of the same topic is evenly distributed 
across a broker's disk.  (was: Copying strategy for the topic dimension)

> Make sure that the copy of the same topic is evenly distributed across a 
> broker's disk.
> ---------------------------------------------------------------------------------------
>
>                 Key: KAFKA-8465
>                 URL: https://issues.apache.org/jira/browse/KAFKA-8465
>             Project: Kafka
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 2.0.1, 2.2.0, 2.2.1
>            Reporter: ChenLin
>            Priority: Major
>         Attachments: image-2019-07-30-13-40-12-711.png, 
> image-2019-07-30-13-40-49-878.png, 
> replication_strategy_for_the_topic_dimension.patch
>
>
> When some partiton's replication is assigned to a broker, which disks should 
> these copies be placed on the broker? The original strategy is to allocate 
> according to the number of partiitons。This strategy will result in uneven 
> disk allocation for the topic dimension.
>  In order to solve this problem, we propose an improved strategy: first 
> ensure that the number of partitions of each disk in the topic dimension is 
> even. If the number of partitions of a topic on two disks is equal, then sort 
> according to the total number of partitions on the disk. Select a disk with 
> the least number of partitions to store the current replication.
> !image-2019-07-30-13-40-12-711.png!
> !image-2019-07-30-13-40-49-878.png!
>  



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