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From "Amar Kamat (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2567) add FileSystem#getHomeDirectory() method
Date Tue, 15 Jan 2008 04:31:34 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12558915#action_12558915
] 

Amar Kamat commented on HADOOP-2567:
------------------------------------

+1 for sort benchmark in unit tests.
To reproduce the issue on
_single machine_ : With a distributed setup, generate 24MB of total data with 5MB per map
using random writer, run sort with 40 maps and default reducers, run validation, i.e
{code}
bash$ bin/hadoop jar build/hadoop-0.16.0-dev-examples.jar randomwriter 
-Dtest.randomwrite.total_bytes=24000000 -Dtest.randomwrite.bytes_per_map=5000000 
-Dtest.min_key=100 -Dtest.max_key=100 -Dtest.min_value=0 -Dtest.max_value=0 
input-randomwrite-test
bash$ bin/hadoop jar build/hadoop-0.16.0-dev-examples.jar sort  -m 40 
input-randomwrite-test output-randomwrite-test
bash$ bin/hadoop jar build/hadoop-0.16.0-dev-test.jar testmapredsort -sortInput 
input-randomwrite-test -sortOutput output-randomwrite-test
{code}
_cluster of machines_ : Just run a sort benchmark i.e randomwriter (default params) and sort
(default params), sort-validator.

> add FileSystem#getHomeDirectory() method
> ----------------------------------------
>
>                 Key: HADOOP-2567
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2567
>             Project: Hadoop
>          Issue Type: New Feature
>          Components: fs
>            Reporter: Doug Cutting
>            Assignee: Doug Cutting
>             Fix For: 0.16.0
>
>         Attachments: 2567-3.patch, HADOOP-2567-1.patch, HADOOP-2567-2.patch, HADOOP-2567.patch
>
>
> The FileSystem API would benefit from a getHomeDirectory() method.
> The default implementation would return "/user/$USER/".
> RawLocalFileSystem would return System.getProperty("user.home").
> HADOOP-2514 can use this to implement per-user trash.

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