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HDFS-5577. Merging change r1546210 from trunk 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1546217 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Brandon Li 2013-11-27 22:35:14 +00:00
parent 003c57ca9b
commit c28ba9bc5d
2 changed files with 5 additions and 2 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -335,6 +335,8 @@ Release 2.2.1 - UNRELEASED
HDFS-5548. Use ConcurrentHashMap in portmap (Haohui Mai via brandonli)
HDFS-5577. NFS user guide update (brandonli)
Release 2.2.0 - 2013-10-13
INCOMPATIBLE CHANGES

5
hadoop-hdfs-project/hadoop-hdfs/src/site/apt/HdfsNfsGateway.apt.vm
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@ -53,11 +53,12 @@ HDFS NFS Gateway
* If the client mounts the export with access time update allowed, make sure the following
property is not disabled in the configuration file. Only NameNode needs to restart after
this property is changed. On some Unix systems, the user can disable access time update
by mounting the export with "noatime".
by mounting the export with "noatime". If the export is mounted with "noatime", the user
doesn't need to change the following property and thus no need to restart namenode.
----
<property>
<name>dfs.access.time.precision</name>
<name>dfs.namenode.accesstime.precision</name>
<value>3600000</value>
<description>The access time for HDFS file is precise upto this value.
The default value is 1 hour. Setting a value of 0 disables