[jira] [Commented] (HBASE-10240) Remove 0.94->0.96 migration code

["Chia-Ping Tsai (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-10240?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16151551#comment-16151551 ] 

Chia-Ping Tsai commented on HBASE-10240:
----------------------------------------

bq. Can we purge any of the remaining Writables?
There are only three remaining Writables - TablePermission, TimeRangeTracker, and MetaWriter.
For TablePermission andTimeRangeTracker, we can do something like this:
# add the wire-compatible function for reading (we had already done this for TablePermission. ditto for TimeRangeTracker.)
# rewrite the writable data as PB encoded when reading
# replace the Writable with inner delegation. Or make the write/readFields static. (purge public Writable inheritance)
For MetaWriter, we just introduce another interface to replace Writable. The readFields is useless.

> Remove 0.94->0.96 migration code
> --------------------------------
>
>                 Key: HBASE-10240
>                 URL: https://issues.apache.org/jira/browse/HBASE-10240
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Peter Somogyi
>            Priority: Critical
>             Fix For: 2.0.0
>
>         Attachments: HBASE-10240.master.001.patch, HBASE-10240.master.001.patch
>
>
> Remove the objects and code only needed for supporting migration to 0.96 from 0.94. 



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