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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3750) Fix and enforce module dependencies
Date Mon, 21 Jul 2008 18:59:31 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3750?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12615367#action_12615367

Doug Cutting commented on HADOOP-3750:

> Should we add setVerifyChecksum to FileSystem?


> Replace with own line-reading code.

Or move line-reading code to util?

> Have a MapRed ReflectionUtils that does this extra configuration?


> Should we get this from the FileSystem cache?

It should use FileSystem#statisticsTable (which, incidentally, should be named STATISTICS_TABLE).

Perhaps we should add a FileSystem method like:

public static Map<String, Statistics> getStatistics();

That returns the stats indexed by URI scheme?

> Fix and enforce module dependencies
> -----------------------------------
>                 Key: HADOOP-3750
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3750
>             Project: Hadoop Core
>          Issue Type: Improvement
>            Reporter: Tom White
>             Fix For: 0.19.0
>         Attachments: hadoop-3750.patch
> Since HADOOP-2916 Hadoop Core consists of modules in independent source trees: core,
hdfs, mapred (and others). The dependencies between them should be enforced to avoid cyclic
dependencies. At present they all have dependencies on each other.

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