HDFS(Hadoop Distributed File System)是Hadoop的核心组件之一,用于存储大量数据。为了提高存储效率和传输速度,HDFS支持数据压缩。以下是HDFS进行数据压缩的一些关键步骤和考虑因素:
hdfs-site.xml
中设置相关属性。<property>
<name>dfs.replication</name>
<value>3</value>
</property>
<property>
<name>dfs.namenode.handler.count</name>
<value>100</value>
</property>
<property>
<name>dfs.datanode.handler.count</name>
<value>100</value>
</property>
<property>
<name>io.file.buffer.size</name>
<value>131072</value>
</property>
<property>
<name>dfs.blocksize</name>
<value>134217728</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.ip-hostname-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-ip-hostname-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-hostname-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-ip-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-port-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-user-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-group-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-ssl-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-kerberos-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-sasl-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-ha-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-scheduler-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-balancer-check</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer</name>
<value>none</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-scheduler</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-ha-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-scheduler-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-scheduler</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-ha</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.use-dn-prefer-hdfs-balancer-scheduler-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs-balancer-hdfs</name>
<value>false</value>
</property>
<property>