[HAWQ-137] Update hdfs-client.xml and yarn-client.xml

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0.0-incubating
• Component/s: libhdfs, libyarn
• Assignee: Radar Da Lei
• Reporter: Radar Da Lei
• Created: 09/Nov/15 03:17
• Updated: 21/Nov/15 03:32
• Resolved: 10/Nov/15 05:58

Description

1. On linux. The following parameters should be set both in hdfs-site.xml and hdfs-client.xml.

<property>
<name>dfs.client.read.shortcircuit</name>
<value>true</value>
<description>
This configuration parameter turns on short-circuit local reads.
</description>
</property>

<property>
<name>dfs.domain.socket.path</name>
<value>/var/lib/hadoop-hdfs/hdfs_domain</value>
<description>
Optional. This is a path to a UNIX domain socket that will be used for
communication between the DataNode and local HDFS clients.
If the string "_PORT" is present in this path, it will be replaced by the
TCP port of the DataNode.
</description>
</property>

<property>
<name>dfs.client.use.legacy.blockreader.local</name>
<value>false</value>
<description>
Legacy short-circuit reader implementation based on HDFS-2246 is used
if this configuration parameter is true.
This is for the platforms other than Linux
where the new implementation based on HDFS-347 is not available.
</description>
</property>

2. Minor changes to yarn-client.xml for default port number.