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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-1712) Remove special characters from path names of metadata tables
Date Thu, 05 Dec 2013 00:00:36 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-1712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13839509#comment-13839509
] 

ASF subversion and git services commented on ACCUMULO-1712:
-----------------------------------------------------------

Commit 8b54ced2777beb81fce04aa8300e192eb4534a36 in branch refs/heads/master from [~ctubbsii]
[ https://git-wip-us.apache.org/repos/asf?p=accumulo.git;h=8b54ced ]

ACCUMULO-1712 Rename system tables and namespaces

  Avoid exclamation point in names
  Adjust shell to be more useful with tables and namespaces listings
  Update documentation about metadata tables


> Remove special characters from path names of metadata tables
> ------------------------------------------------------------
>
>                 Key: ACCUMULO-1712
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1712
>             Project: Accumulo
>          Issue Type: Sub-task
>          Components: tserver
>            Reporter: Christopher Tubbs
>            Assignee: Christopher Tubbs
>             Fix For: 1.6.0
>
>
> This is particularly problematic because of the quoting required to examine hdfs paths
with a "!" character in them. The root table ID and the metadata table ID should not use special
characters.
> Some considerations:
> # should not collide with possible user table IDs
> # might be useful, but may not be necessary, to retain lexicographical sort order, so
root table goes first, then metadata table, then other tables
> Some options:
> # Use negative numbers: -1 for the root table, -2 for the metadata table (my personal
favorite)
> # Use a different special character: %, &, +, or . (each of which may have special
considerations)
> # Reserve a block of IDs for internal use (say, 0-10 or 0-100), and move other tables
on upgrade



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