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Date: Thu, 19 Dec 2013 03:06:08 +0000 (UTC)
From: "Jeffrey Zhong (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12685072.1387242597179.62756.1387422368351@arcas>
In-Reply-To: <JIRA.12685072.1387242597179@arcas>
References: <JIRA.12685072.1387242597179@arcas>
Subject: [jira] [Commented] (HBASE-10183) Need enforce a reserved range of
 system tag types
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    [ https://issues.apache.org/jira/browse/HBASE-10183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13852544#comment-13852544 ] 

Jeffrey Zhong commented on HBASE-10183:
---------------------------------------

Hey, 

[~ram_krish], [~anoop.hbase] Do you guys want to take this? Let's just document that [0,31] is our reserved tag value range so a user should not use them otherwise they may collide with future Hbase implementations. I can't think a good way to enforce this by code.

Thanks.

> Need enforce a reserved range of system tag types
> -------------------------------------------------
>
>                 Key: HBASE-10183
>                 URL: https://issues.apache.org/jira/browse/HBASE-10183
>             Project: HBase
>          Issue Type: Task
>          Components: HFile
>    Affects Versions: 0.98.0
>            Reporter: Jeffrey Zhong
>            Priority: Critical
>             Fix For: 0.98.0
>
>
> If we don't reserve a system tag types now, let's say 0-64(total tag type range is 0-255). We'll have a hard time when introducing a new system tag type in the future because the new tag type may collide with an existing user tag type as tag is open to users as well.
> [~ram_krish], [~anoop.hbase] How do you guys think?
> Thanks!


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