@rmaruthiyodan the steps look fine to me. I actually had to do this myself recently (see this article https://community.hortonworks.com/articles/4632/changing-dfsnameservices-value-after-hdfs-ha-has-b.html). I didn't encounter any issues after changing the logical name. Just make sure you also update the Hive Metastore and I think if you use HBase there are some additional changes necessary. ... View more

Hi sprasad, the documentation should be fine in regards to enabling HDFS compression, but I agree, the config params (or at least the names) are deprecated. The old config params are still supported and valid, however you should switch to the new names. Here is a list of deprecated values and their new names: https://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/DeprecatedProperties.html To turn on HDFS compression using the new params, use the following configuration: core-site.xml <property> <name>io.compression.codecs</name> <value>org.apache.hadoop.io.compress.GzipCodec, org.apache.hadoop.io.compress.DefaultCodec,com.hadoop.compression.lzo.LzoCodec, org.apache.hadoop.io.compress.SnappyCodec</value> <description>A list of the compression codec classes that can be used for compression/decompression.</description> </property> mapred-site.xml <property> <name>mapreduce.map.output.compress</name> <value>true</value> </property> <property> <name>mapreduce.map.output.compress.codec</name> <value>org.apache.hadoop.io.compress.GzipCodec</value> </property> <property> <name>mapreduce.output.fileoutputformat.compress.type</name> <value>BLOCK</value> </property> (Optional) Job output compression, mapred-site.xml <property> <name>mapreduce.output.fileoutputformat.compress</name> <value>true</value> </property> <property> <name>mapreduce.output.fileoutputformat.compress.codec</name> <value>org.apache.hadoop.io.compress.GzipCodec</value> </property> ... View more