Can't see Compression Properties in Core-site.xml

I can’t see the compression properties in the core-site.xml at /etc/hadoop/conf/.
Any idea if it is normal?

Also, from where to refer the compression codec class names in the exam in case I forget?


In general, core-site.xml will have only default parameters and it is normal. You can add additional parameters if you need and it is recommended to add via Cloudera manager (or) hortonworks (or) other suitable tools instead of directly editing /etc/hadoop/conf/

In Hadoop you will have two types of xml.

  1. default (This will have default properties)
  2. site (This will have overridden properties)

Please find below, core-site.xml presence in the cluster

check the files, you will find the property, io.compression.codecs

Please mark it as answer if you find it. Thanks!

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