Apache Impala - interesting presentations

The Impala Cookbook from Cloudera, Inc.

• useful tips about performance and optimisation

Cloudera Impala technical deep dive from huguk

• partitioning: few thousands of partitions are OK, tens of thousands are too much
• partition file sizes should be hundreds of MB and more
• Parquet: snappy vs. gzip compression (faster vs. more efficient)
• before Impala 1.2.1 was necessary to place the biggest table in the query first, but since that version Impala does automatic rearrangement
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Impala Architecture presentation from hadooparchbook

Impala 2.0 - The Best Analytic Database for Hadoop from Cloudera, Inc.

An introduction to Cloudera Impala from Semtech Solutions Ltd