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What are the benefits using a database system on top of hdfs and hadoop

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What are the benefits using a database system on top of hdfs and hadoop

New Contributor

Hi!

What are the benefits using a database system on top of HDFS and the Hadoop ecosystem (Hive, HBase, Cassandra, MongoDB, MySQL)

In my view:

  • ACID queries
  • Accessing data using standard JDBC/ODBC connect (what could be useless if it depends on big data queris, what could take up minutes to compile, and also could be provided by Presto)
  • CAP solution - depending on the system and the ecosystem CAP-proofness
  • A well thought-out querying system. (What Spark and Hive could easily substitute)

What are the pros and the cons?