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From "Ben Slusky (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-6097) Multiple bugs w/ Hadoop archives
Date Wed, 19 Aug 2009 16:27:14 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6097?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12745106#action_12745106
] 

Ben Slusky commented on HADOOP-6097:
------------------------------------

Koji, I'm not entirely sure what you're saying. When using the har filesystem, you create
a connection for each harpath. This is not a network connection itself, but it wraps a network
connection to the underlying filesystem, which is cached. I think this caching is sufficient,
and it is not necessary to cache the wrapping har filesystem "connection".

> Multiple bugs w/ Hadoop archives
> --------------------------------
>
>                 Key: HADOOP-6097
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6097
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 0.18.0, 0.18.1, 0.18.2, 0.18.3, 0.19.0, 0.19.1, 0.20.0
>            Reporter: Ben Slusky
>             Fix For: 0.20.1
>
>         Attachments: HADOOP-6097.patch
>
>
> Found and fixed several bugs involving Hadoop archives:
> - In makeQualified(), the sloppy conversion from Path to URI and back mangles the path
if it contains an escape-worthy character.
> - It's possible that fileStatusInIndex() may have to read more than one segment of the
index. The LineReader and count of bytes read need to be reset for each block.
> - har:// connections cannot be indexed by (scheme, authority, username) -- the path is
significant as well. Caching them in this way limits a hadoop client to opening one archive
per filesystem. It seems to be safe not to cache them, since they wrap another connection
that does the actual networking.

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