How do I compress a hive file?

We can enable compression on Hive Intermediate output by setting the property hive. exec. compress. intermediate either from Hive Shell using set command or at site level in hive-site.

What are the different types of compression techniques?

There are two main types of compression: lossy and lossless.

What is file compression techniques?

File compression is a technique for “squeezing” data files so that they take up less storage space, whether on a hard drive or other media. Many different kinds of software, including backup programs, operating systems, media apps, and file management utilities, use this technique.

What is snappy compression in Hive?

compress=SNAPPY’ in the TBLPROPERTIES when creating a Parquet table or set ‘parquet. compression. SNAPPY’ in hive-site through Ambari. This ensures that all Parquet files produced through Hive related to this table will be compressed.

How does snappy compression work?

The principle being that file sizes will be larger when compared with gzip or bzip2. Google says; Snappy is intended to be fast. On a single core of a Core i7 processor in 64-bit mode, it compresses at about 250 MB/sec or more and decompresses at about 500 MB/sec or more.

How many compression techniques are there?

There are two kinds of compression: Lossless and Lossy.

Which of the following is a file compression program?

The original and best file compression tool In addition to support for a wide range of archive formats (including ZIP, ZIPX, RAR (extraction only), 7z, TAR, GZIP, VHD and XZ), WinZip offers integration with a number of programs including Office for easy zipping as you work.

Which of the following file types use lossless compression?

Lossless compression refers to compression in which the image is reduced without any quality loss. Usually this is done by removing unnecessary metadata from JPEG and PNG files. RAW, BMP, GIF, and PNG are all lossless image formats.