What file formats does Impala support?
Impala supports various file formats, including Parquet, ORC, Avro, RCFile, SequenceFile, and TextFile. Among them, Parquet and ORC are the most commonly used file formats due to their higher performance and better compression ratio. Additionally, Impala also supports using external tables to read other file formats, such as CSV and JSON. By utilizing the appropriate file format, it is possible to enhance the performance and query efficiency of Impala.