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From "James Taylor (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PHOENIX-2791) Support append only schema declaration
Date Wed, 23 Mar 2016 05:23:25 GMT

     [ https://issues.apache.org/jira/browse/PHOENIX-2791?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

James Taylor updated PHOENIX-2791:
----------------------------------
    Description: If we know in advance that columns will only be added to but never removed
from a schema, we can prevent the RPC from the client to the server when the client already
has all columns declared in the CREATE TABLE/VIEW IF NOT EXISTS. To enable this, we can add
an APPEND_ONLY_SCHEMA boolean flag to SYSTEM.CATALOG. Or another potential name would be IMMUTABLE_SCHEMA
to match IMMUTABLE_ROWS?  (was: If we know in advance that columns will only be added to but
never removed from a schema, we can prevent the RPC from the client to the server when the
client already has all columns declared in the CREATE TABLE/VIEW IF NOT EXISTS. To enable
this, we can add an APPEND_ONLY_SCHEMA boolean flag to SYSTEM.CATALOG.)

> Support append only schema declaration
> --------------------------------------
>
>                 Key: PHOENIX-2791
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2791
>             Project: Phoenix
>          Issue Type: Improvement
>            Reporter: James Taylor
>            Assignee: Thomas D'Silva
>             Fix For: 4.8.0
>
>
> If we know in advance that columns will only be added to but never removed from a schema,
we can prevent the RPC from the client to the server when the client already has all columns
declared in the CREATE TABLE/VIEW IF NOT EXISTS. To enable this, we can add an APPEND_ONLY_SCHEMA
boolean flag to SYSTEM.CATALOG. Or another potential name would be IMMUTABLE_SCHEMA to match
IMMUTABLE_ROWS?



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