[jira] [Updated] (HBASE-21250) Refactor WALProcedureStore and add more comments for better understanding the implementation

["Duo Zhang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-21250?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Duo Zhang updated HBASE-21250:
------------------------------
    Attachment: HBASE-21250.patch

> Refactor WALProcedureStore and add more comments for better understanding the implementation
> --------------------------------------------------------------------------------------------
>
>                 Key: HBASE-21250
>                 URL: https://issues.apache.org/jira/browse/HBASE-21250
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Duo Zhang
>            Priority: Major
>             Fix For: 3.0.0, 2.2.0
>
>         Attachments: HBASE-21250.patch
>
>
> The implementation is complicated and lack of comments to say how it works.
> {code}
> /**
>  * WAL implementation of the ProcedureStore.
>  * @see ProcedureWALPrettyPrinter for printing content of a single WAL.
>  * @see #main(String[]) to parse a directory of MasterWALProcs.
>  */
> {code}
> I think at least we can move sub classes to separated files to make the class smaller, and add more comments to describe what is going on here.



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