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Date: Wed, 28 Oct 2015 21:59:27 +0000 (UTC)
From: "Tony Wu (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Created] (HDFS-9331) Modify
 TestNameNodeMXBean#testNameNodeMXBeanInfo() to account for filesystem
 entirely allocated for DFS use
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Tony Wu created HDFS-9331:
-----------------------------

             Summary: Modify TestNameNodeMXBean#testNameNodeMXBeanInfo() to account for filesystem entirely allocated for DFS use
                 Key: HDFS-9331
                 URL: https://issues.apache.org/jira/browse/HDFS-9331
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: HDFS, test
    Affects Versions: 2.7.1
            Reporter: Tony Wu
            Assignee: Tony Wu
            Priority: Trivial


{{TestNameNodeMXBean#testNameNodeMXBeanInfo}} expects a none-zero nonDFS size. The nonDFS size is defined as:
{quote}
The space that is not used by HDFS. For instance, once you format a new disk to ext4, certain space is used for "lost-and-found" directory and ext4 metadata.
{quote}

It will be possible to fully allocate all spaces in a partition/volume for DFS use. In which case the nonDFS size will be zero. We can relax the check in the test to account for this case.


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