[jira] [Updated] (HUDI-80) Incrementalize cleaning based on timeline metadata

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HUDI-80?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated HUDI-80:
-------------------------------
    Labels: pull-request-available  (was: )

> Incrementalize cleaning based on timeline metadata
> --------------------------------------------------
>
>                 Key: HUDI-80
>                 URL: https://issues.apache.org/jira/browse/HUDI-80
>             Project: Apache Hudi (incubating)
>          Issue Type: Improvement
>          Components: Performance, Write Client
>            Reporter: Vinoth Chandar
>            Assignee: Balaji Varadarajan
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.5.1
>
>
> Currently, cleaning lists all partitions once and then picks the file groups to clean from DFS. This is partly due to support for retaining last x versions of a file group as well (in additon to the default mode of retaining last x commits). This could be expensive in some cases. See [https://github.com/apache/incubator-hudi/issues/613] for a issue reported. 
>  
> This task tracks work to 
>  * Determine if we can get rid of last X version cleaning mode 
>  * Implement cleaning based on file metadata in hudi timeline itself
>  * Resulting rpc calls to DFS would be O(number of filegroups cleaned)/O(number of partitions touched in last X commits)
>  
> HUDI-1 implements a timeline service for writing, that promotes caching of file system metadata. This can be implemented on top of that. 



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