Hive Metastore Configuration

posted on Nov 20th, 2016

Apache Hive

Apache Hive is a data warehouse infrastructure built on top of Hadoop for providing data summarization, query, and analysis. Hive gives an SQL-like interface to query data stored in various databases and file systems that integrate with Hadoop. The traditional SQL queries must be implemented in the MapReduce Java API to execute SQL applications and queries over a distributed data. Hive provides the necessary SQL abstraction to integrate SQL-like Queries (HiveQL) into the underlying Java API without the need to implement queries in the low-level Java API. Since most of the data warehousing application work with SQL based querying language, Hive supports easy portability of SQL-based application to Hadoop.

Pre Requirements

1) A machine with Ubuntu 14.04 LTS operating system

2) Apache Hadoop 2.6.4 pre installed (How to install Hadoop on Ubuntu 14.04)

3) Apache Hive 2.1.0 pre installed (How to Install Hive on Ubuntu 14.04)

Hive Metastore Configuration

There are 3 types of metastore configurations

1) Embedded Metastore - Derby Database (See, here)

2) Local Metastore - MySQL or Postgre Database (See, MySQL here)

3) Remote Metastore - MySQL or Postgre or Seerate Database (See, MySQL here)

You can set remote metastore uri in hive-site.xml file

hive-site.xml

<property>
   <name>hive.metastore.uris</name>
   <value>thrift://node1(or IP Address):9083</value>
   <description>IP address (or fully-qualified domain name) and port of the metastore host</description>
</property>

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