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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-626) Use Visitor pattern in MetaRegion to reduce code clones in HTable and HConnectionManager
Date Wed, 14 May 2008 17:38:55 GMT

    [ https://issues.apache.org/jira/browse/HBASE-626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12596843#action_12596843
] 

stack commented on HBASE-626:
-----------------------------

Looks good JDC.  Regards the TODO, just ignore.  No use case that I can think of for a scan
taking multiple Visitors.

> Use Visitor pattern in MetaRegion to reduce code clones in HTable and HConnectionManager
> ----------------------------------------------------------------------------------------
>
>                 Key: HBASE-626
>                 URL: https://issues.apache.org/jira/browse/HBASE-626
>             Project: Hadoop HBase
>          Issue Type: Improvement
>          Components: master
>            Reporter: Jean-Daniel Cryans
>            Priority: Minor
>             Fix For: 0.2.0
>
>
> HTable and HConnectionManager.TableServers both scan the meta region in the same way
(but the later also retry one time if it fails). A Visitor pattern should be used in a new
scanning method in MetaRegion to accept visitors that gather information such as region names
for a table or the list of all tables.

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