(1) CDH clearly divides Hadoop versions, and there are only two series of versions, namely cdh3 and cdh4, which correspond to the first generation Hadoop(Hadoop 1.0) and the second generation Hadoop(Hadoop 2.0) respectively. By contrast, the Apache version is much more confusing. Compared with Apache hadoop, it is enhanced in compatibility, security and stability.

(2) The 2)CDH3 version is improved based on Apache hadoop 0.20.2, and incorporates the latest patch. CDH4 version is improved based on Apache hadoop 2. X, and CDH always applies the latest Bug fixes or feature patches, and it is released earlier than the Apache hadoop version with the same function, and the update speed is faster than the Apache official.

(3) Secure CDH supports Kerberos security authentication, while apache hadoop uses rough user name matching authentication.

(4)CDH documents are clear, and many users who use Apache version will read the documents provided by CDH, including installation documents and upgrade documents.

(5)CDH supports Yum/Apt package, Tar package, RPM package and Cloudera Manager installation, while Apache hadoop only supports Tar package installation.