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From "Philip Zeyliger (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2914) extend DistributedCache to work locally (LocalJobRunner)
Date Mon, 01 Jun 2009 16:21:07 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12715141#action_12715141
] 

Philip Zeyliger commented on HADOOP-2914:
-----------------------------------------

Thanks, Amareshwari.  That's exactly what's going on, which means symlinks aren't working
in LocalJobRunner, even after this patch.  That seems like a fine first step.  (Symlinks in
local job runner might be tricky anyway --- LocalJobRunner doesn't cd to a working dir, so
making symlinks might dirty up your current directory.)

I hadn't seen that specific test before, but it passes.

The failing tests are:
{noformat}
org.apache.hadoop.mapred.TestQueueCapacities.testMultipleQueues	0.0010	3
org.apache.hadoop.mapred.lib.TestCombineFileInputFormat.<init>
{noformat}
which are broken in trunk, I believe.

> extend DistributedCache to work locally (LocalJobRunner)
> --------------------------------------------------------
>
>                 Key: HADOOP-2914
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2914
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: sam rash
>            Assignee: Philip Zeyliger
>            Priority: Minor
>         Attachments: HADOOP-2914-v1-full.patch, HADOOP-2914-v1-since-4041.patch
>
>
> The DistributedCache does not work locally when using the outlined recipe at http://hadoop.apache.org/core/docs/r0.16.0/api/org/apache/hadoop/filecache/DistributedCache.html

> Ideally, LocalJobRunner would take care of populating the JobConf and copying remote
files to the local file sytem (http, assume hdfs = default fs = local fs when doing local
development.

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