HDFS-5577. NFS user guide update. Contributed by Brandon Li
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1546210 13f79535-47bb-0310-9956-ffa450edef68
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@ -754,6 +754,8 @@ Release 2.2.1 - UNRELEASED
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HDFS-5548. Use ConcurrentHashMap in portmap (Haohui Mai via brandonli)
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HDFS-5577. NFS user guide update (brandonli)
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Release 2.2.0 - 2013-10-13
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INCOMPATIBLE CHANGES
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@ -53,11 +53,12 @@ HDFS NFS Gateway
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* If the client mounts the export with access time update allowed, make sure the following
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property is not disabled in the configuration file. Only NameNode needs to restart after
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this property is changed. On some Unix systems, the user can disable access time update
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by mounting the export with "noatime".
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by mounting the export with "noatime". If the export is mounted with "noatime", the user
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doesn't need to change the following property and thus no need to restart namenode.
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----
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<property>
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<name>dfs.access.time.precision</name>
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<name>dfs.namenode.accesstime.precision</name>
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<value>3600000</value>
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<description>The access time for HDFS file is precise upto this value.
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The default value is 1 hour. Setting a value of 0 disables
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