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From: Brahma Reddy Battula <brahmareddy.battula@huawei.com>
To: "user@hadoop.apache.org" <user@hadoop.apache.org>
Subject: RE: Namenode doesn't accurately know datanodes free-space
Thread-Topic: Namenode doesn't accurately know datanodes free-space
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Date: Wed, 30 Oct 2013 13:12:07 +0000
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Dear Alex


"""Has anyone else experienced this behavior?""""

Yes, I had also experienced and raised jira for same..


Please have look on following issue..

https://issues.apache.org/jira/browse/HDFS-5215



________________________________________
From: alex bohr [alexjbohr@gmail.com]
Sent: Wednesday, October 30, 2013 1:07 AM
To: user@hadoop.apache.org
Subject: Namenode doesn't accurately know datanodes free-space

I see that the Namenode always reports datanodes as having about 5% more sp=
ace then they actually do.

And I recently added some smaller datanodes into the cluster and the drives=
 filled up to 100%, not respecting the 5GB I had reserved for Map Reduce wi=
th this property from mapred-site.xml:
    <property>
      <name>dfs.datanode.du.reserved</name>
      <value>5368709120</value>
    </property>

Has anyone else experienced this behavior?