Role of Hive Metastore

#1

Let us understand details related to Metadata Generated in Hive.

  • When we create a Hive table, there is metadata associated with it.
    • Table Name
    • Column Names and Data Types
    • Location
    • File Format
    • and more
  • This metadata has to be stored some where so that Hive Engine can access the information to serve our queries.

Let us understand where the metadata is stored.

  • Information is typically stored in relational database and it is called as metastore.
  • It is extensively used by Hive engine for syntax and semantics check as well as execution of Hive Queries.
  • In our case it is stored in MySQL Database. Let us review the metastore tables.

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