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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-4737) Use position as column qualifier for APPEND_ONLY_SCHEMA
Date Wed, 16 May 2018 01:24:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-4737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16476694#comment-16476694
] 

Hudson commented on PHOENIX-4737:
---------------------------------

ABORTED: Integrated in Jenkins build Phoenix-4.x-HBase-0.98 #1892 (See [https://builds.apache.org/job/Phoenix-4.x-HBase-0.98/1892/])
PHOENIX-4737 Use position as column qualifier for APPEND_ONLY_SCHEMA (jtaylor: rev ed1d300e11158bfbfda35dece6ff7b17623216e3)
* (edit) phoenix-core/src/it/java/org/apache/phoenix/end2end/ColumnEncodedBytesPropIT.java
* (edit) phoenix-core/src/main/java/org/apache/phoenix/coprocessor/MetaDataEndpointImpl.java
* (edit) phoenix-core/src/main/java/org/apache/phoenix/schema/MetaDataClient.java


> Use position as column qualifier for APPEND_ONLY_SCHEMA
> -------------------------------------------------------
>
>                 Key: PHOENIX-4737
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-4737
>             Project: Phoenix
>          Issue Type: Improvement
>            Reporter: James Taylor
>            Assignee: James Taylor
>            Priority: Major
>             Fix For: 4.14.0, 5.0.0
>
>         Attachments: PHOENIX-4737_v1.patch
>
>
> An easy way to prevent gaps in the column encoding used to define column qualifiers is
to use the position to define the column qualifier. This only works if:
>  * You disallow removes of columns
>  * You disallow adding columns to the base table
> This is pretty easy to enforce and will enable column encoding to be used effectively
when a base table has many views.



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