[jira] [Updated] (HBASE-26969) Eliminate MOB renames when SFT is enabled

["Nick Dimiduk (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-26969?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nick Dimiduk updated HBASE-26969:
---------------------------------
    Fix Version/s: 2.6.0
                   2.5.1
                       (was: 2.5.0)

> Eliminate MOB renames when SFT is enabled
> -----------------------------------------
>
>                 Key: HBASE-26969
>                 URL: https://issues.apache.org/jira/browse/HBASE-26969
>             Project: HBase
>          Issue Type: Sub-task
>          Components: mob
>    Affects Versions: 2.5.0, 3.0.0-alpha-3
>            Reporter: Szabolcs Bukros
>            Assignee: Szabolcs Bukros
>            Priority: Major
>             Fix For: 2.6.0, 2.5.1, 3.0.0-alpha-4
>
>
> MOB file compaction and flush still relies on renames even when SFT is enabled.
> My proposed changes are:
>  * when requireWritingToTmpDirFirst is false during mob flush/compact instead of using the temp writer we should create a different writer using a {color:#000000}StoreFileWriterCreationTracker that writes directly to the mob store folder{color}
>  * {color:#000000}these StoreFileWriterCreationTracker should be stored in the MobStore. This would requires us to extend MobStore with a createWriter and a finalizeWriter method to handle this{color}
>  * {color:#000000}refactor {color}MobFileCleanerChore to run on the RS instead on Master to allow access to the {color:#000000}StoreFileWriterCreationTracker{color}s to make sure the currently written files are not cleaned up



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