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DATA COMPRESSION LZO • https://github.com/toddlipcon/hadoop-lzo Big Data Analytics with Hadoop

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DATA COMPRESSION
LZO
• https://github.com/toddlipcon/hadoop-lzo
• By enabling compression, the store file
uses a compression algorithm on blocks
as they are written (during flushes and
compactions) and thus must be
decompressed when reading
• Compression reduces the number of
bytes written/read to/from HDFS
• Compression effectively improves the
efficiency of network bandwidth and
disk space
• Compression reduces the size of data
needed to be read when issuing a read
SNAPPY
• Hadoop Snappy is a project for Hadoop that
provide access to the snappy compression.
http://code.google.com/p/snappy/
• Hadoop-Snappy can be used as an add-on
for recent (released) versions of Hadoop
that do not provide Snappy Codec support
yet
• Hadoop-Snappy is being kept in synch with
Hadoop Common
• Snappy is a compression/decompression
library. It does not aim for maximum
compression, or compatibility with any
other compression library
50 Big Data Analytics with Hadoop

Veröffentlicht in: Technologie, Bildung, Business
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