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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TAJO-1907) Reduce the size of the INDEXES table's COLUMN_NAMES field
Date Wed, 07 Oct 2015 05:10:26 GMT

    [ https://issues.apache.org/jira/browse/TAJO-1907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14946258#comment-14946258

ASF GitHub Bot commented on TAJO-1907:

Github user hyunsik commented on the pull request:

    I have a question. Should users backup and restore for it? If so, please share the breaking
change in dev/user mailing list.

> Reduce the size of the INDEXES table's COLUMN_NAMES field
> ---------------------------------------------------------
>                 Key: TAJO-1907
>                 URL: https://issues.apache.org/jira/browse/TAJO-1907
>             Project: Tajo
>          Issue Type: Task
>          Components: Catalog
>            Reporter: Jihoon Son
>            Assignee: Jihoon Son
>            Priority: Critical
>             Fix For: 0.11.0
> MySQL InnoDB allows the size of a single column for an index key up to 767 bytes by default.
For a TEXT or VARCHAR column, a UTF-8 character set and the maximum of 3 bytes for each character
are assumed. So, the current length of COLUMN_NAMES (256) causes an error while starting up

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