hadoop2.2.0 core-site.xml--Rack Configuration

最新推荐文章于 2020-09-22 15:23:05 发布

原创最新推荐文章于 2020-09-22 15:23:05 发布 · 478 阅读

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本文详细介绍了Hadoop集群中网络拓扑配置的关键参数及其作用。包括如何通过脚本映射节点到交换机，设置解析DNS名称到网络拓扑名称的脚本，以及指定脚本运行的最大参数数量。

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<property>
    <name>net.topology.node.switch.mapping.impl</name>
  <value>org.apache.hadoop.net.ScriptBasedMapping</value>
  <description> The default implementation of the DNSToSwitchMapping. It
    invokes a script specified in net.topology.script.file.name to resolve
    node names. If the value for net.topology.script.file.name is not set, the
    default value of DEFAULT_RACK is returned for all node names.
  </description>
</property>

注释：

<property>
  <name>net.topology.script.file.name</name>
  <value></value>
  <description> The script name that should be invoked to resolve DNS names to
    NetworkTopology names. Example: the script would take host.foo.bar as an
    argument, and return /rack1 as the output.
  </description>
</property>

注释：

<property>
  <name>net.topology.script.number.args</name>
  <value>100</value>
  <description> The max number of args that the script configured with 
    net.topology.script.file.name should be run with. Each arg is an
    IP address.
  </description>
</property>

注释：