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From "Chris Douglas (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Deleted] (MAPREDUCE-7013) Tests of internal logic should not use the local FS as scratch space
Date Wed, 22 Nov 2017 16:45:00 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-7013?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Chris Douglas updated MAPREDUCE-7013:
    Comment: was deleted

(was: MAPREDUCE-7011 is an example)

> Tests of internal logic should not use the local FS as scratch space
> --------------------------------------------------------------------
>                 Key: MAPREDUCE-7013
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7013
>             Project: Hadoop Map/Reduce
>          Issue Type: Test
>            Reporter: Chris Douglas
> MapReduce often manipulates files/permissions to ensure splits, dependencies, and other
user data are consistently managed. Unit tests of these internal methods sometimes set up
temporary hierarchies in a scratch directory on the local FS to exercise these modules. However,
dev environment quirks (e.g., umask) can cause these tests to fail spuriously. Instead, this
logic should be validated by mocking the filesystem.

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