[jira] [Commented] (HBASE-21246) Introduce WALIdentity interface

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

    [ https://issues.apache.org/jira/browse/HBASE-21246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16631228#comment-16631228 ] 

Duo Zhang commented on HBASE-21246:
-----------------------------------

Why we have a getSize in WALIdentity?

And do we want to introduce some structures in the WALIdentity? If not, why not just use a String? You introduced a method which creates a WALIdentity from a String, then why not just use String as the identity?

> 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
>         Attachments: 21246.HBASE-20952.001.patch
>
>
> 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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