bigdata - What is the under the hood database in cloudera 5.x -

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is there under hood database in cloudera 5.x distribution have db2 in ibm distribution i.e. under biginsights.

the need have small tables part of our project along huge tables , in hive taking more time fetch data small tables compare rdbms. if have rdbms under hood in cloudera 5.x can create small tables in database.

hopefully i'm understanding question properly.

cloudera manager , cloudera cdh components rely on database metadata , other bits of application data. default, when install cloudera manager , cdh use embedded postgres database. can change , applications use either postgresql, oracle or mysql.

for example hive stores metadata "tables" , "databases" create in default database or database selected "hive metastore database type" in cloudera manager.

hope helps.


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