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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3785) FileSystem cache should be case-insensitive
Date Fri, 08 Aug 2008 22:36:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12621084#action_12621084
] 

Tsz Wo (Nicholas), SZE commented on HADOOP-3785:
------------------------------------------------

I checked the URI class.  I cannot make it returning an empty string.  It always returns null
when the scheme/authority is missing.  So I think this patch is good to be committed.

> FileSystem cache should be case-insensitive
> -------------------------------------------
>
>                 Key: HADOOP-3785
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3785
>             Project: Hadoop Core
>          Issue Type: Bug
>            Reporter: Doug Cutting
>            Assignee: Bill de hOra
>             Fix For: 0.19.0
>
>         Attachments: HADOOP-3785.patch
>
>
> We cache FileSystem instances based on URI scheme & authority, plus username.  Elsewhere
we compare URI schemes and authorities case-insensitively, but the cache is case-sensitive.
 In particular, the Cache.Key#equals() and Cache.Key#hashCode() should be made case-insensitive.
> This should not be a blocker, since the worst it causes is a few extra FileSystem instances
to be cached.

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