[
https://issues.apache.org/jira/browse/HBASE-21246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16661038#comment-16661038
]
Ted Yu commented on HBASE-21246:
--------------------------------
Modified previous comment with more background information.
bq. concern about using a WALIdentity was having NoSuchLogException (or
similar) littered all over the place.
NoSuchLogException can be thought of as analogous to FileNotFoundException in
the FileSystem world. Through NoSuchLogException, we would consolidate WAL
system error handling with abstraction suitable for multiple WAL backends
(Kafka, Distributed Log, Ratis and distributed FileSystem).
The handling of NoSuchLogException would occur in no more than what current
codebase handles FileNotFoundException.
> 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.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
>
>
> 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.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
