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From "ryan rawson (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2219) stop using code mapping for method names in the RPC
Date Sun, 14 Feb 2010 04:08:27 GMT

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

ryan rawson updated HBASE-2219:
-------------------------------

    Attachment: HBASE-2219-2.patch

here is a patch that actually works and all tests pass.

> 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
>            Priority: Blocker
>             Fix For: 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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