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https://issues.apache.org/jira/browse/HADOOP-3785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12621080#action_12621080
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Bill de hOra commented on HADOOP-3785:
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> I think it would be more safe for keeping scheme and authority to null
> instead of setting them to empty strings.
I did this because of NPEs in one of the tests. It's easy to put a null version
of the patch together, but I'd like know what the problem would be (and I guess
why it's ok for these fields to be null at all)
> 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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