Part 4: The Connect XE Drivers : The Impala Wire Protocol Driver : Limitations on Cloudera Impala™ Functionality

Limitations on Cloudera Impala™ Functionality
The following restrictions are based on using Cloudera Impala version 1.0:
For a more complete listing of known issues and limitations for your version of Impala, refer to the Cloudera Impala user documentation:
http://www.cloudera.com/content/support/en/documentation.html
Note that Cloudera Impala is not designed for OLTP workloads and does not offer real-time queries or row-level updates. Instead, Impala is designed for batch type jobs over large data sets with high latency. This means that queries such as "SELECT * FROM mytable" return quickly. However, other SELECT statements are much slower.

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