[jira] Updated: (HBASE-2219) stop using code mapping for method names in the RPC

["Jean-Daniel Cryans (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-2219?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jean-Daniel Cryans updated HBASE-2219:
--------------------------------------

    Fix Version/s: 0.20.4
         Assignee: ryan rawson

Bringing in 0.20.4 since we voted +1 on it and assigning Ryan.

> stop using code mapping for method names in the RPC
> ---------------------------------------------------
>
>                 Key: HBASE-2219
>                 URL: https://issues.apache.org/jira/browse/HBASE-2219
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 0.20.3
>            Reporter: ryan rawson
>            Assignee: ryan rawson
>            Priority: Blocker
>             Fix For: 0.20.4, 0.21.0
>
>         Attachments: HBASE-2219-2.patch, HBASE-2219.patch
>
>
> since we use a sorted mapping of method names -> codes and send that over the wire, even trivial changes, such as adding a new call, become wire-incompatible.  This means many features which could easily have gone into a minor update must wait for a major update.  Eg: 2066, 1845, etc.
> This will increase on-wire overhead, but the compatibility is worth it I think.

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