[jira] [Comment Edited] (HBASE-21246) Introduce WALIdentity interface

["Ted Yu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-21246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16670472#comment-16670472 ] 

Ted Yu edited comment on HBASE-21246 at 11/1/18 4:26 PM:
---------------------------------------------------------

wal-providers.png is diagram for WALProvider related classes.

wal-factory-providers.png is diagram involving WALProvider related classes and WALFactory class. It also shows WALIdentity (and FSWALIdentity) which replaces Path in the existing WAL APIs.
The refactored WAL API, as shown in these diagrams, illustrate how we abstract from distributed FileSystem-centric concepts.


was (Author: yuzhihong@gmail.com):
wal-providers.png is diagram for WALProvider related classes.

wal-factory-providers.png is diagram involving WALProvider related classes and WALFactory class.

> Introduce WALIdentity interface
> -------------------------------
>
>                 Key: HBASE-21246
>                 URL: https://issues.apache.org/jira/browse/HBASE-21246
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>            Priority: Major
>             Fix For: HBASE-20952
>
>         Attachments: 21246.003.patch, 21246.20.txt, 21246.21.txt, 21246.23.txt, 21246.HBASE-20952.001.patch, 21246.HBASE-20952.002.patch, 21246.HBASE-20952.004.patch, 21246.HBASE-20952.005.patch, 21246.HBASE-20952.007.patch, 21246.HBASE-20952.008.patch, wal-factory-providers.png, wal-providers.png
>
>
> We are introducing WALIdentity interface so that the WAL representation can be decoupled from distributed filesystem.
> The interface provides getName method whose return value can represent filename in distributed filesystem environment or, the name of the stream when the WAL is backed by log stream.



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