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Learning Cloudera Impala by Avkash Chauhan

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Impala core components

In this section we will first learn about various important components of Impala and then discuss the intricate details on Impala inner workings. Here, we will discuss the following important components:

  • Impala daemon
  • Impala statestore
  • Impala metadata and metastore

Putting together the above components with Hadoop and an application or command line interface, we can conceptualize them as seen in the following figure:

Impala core components

Let's starts discussing the core Impala components in detail now.

Impala daemon

At the core of Impala, there exists the Impala daemon, which runs on each DataNode where Impala is installed. The Impala daemon is represented ...

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