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HADOOP-10231. Add some components in Native Libraries document (Akira AJISAKA via aw) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1618061 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Allen Wittenauer 2014-08-14 21:40:45 +00:00
parent 54429fd08a
commit ae2ca87ab3
2 changed files with 12 additions and 5 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -78,6 +78,9 @@ Release 2.6.0 - UNRELEASED
HADOOP-8944. Shell command fs -count should include human readable option
(Jonathan Allen via aw)
HADOOP-10231. Add some components in Native Libraries document (Akira
AJISAKA via aw)
OPTIMIZATIONS
HADOOP-10838. Byte array native checksumming. (James Thomas via todd)

14
hadoop-common-project/hadoop-common/src/site/apt/NativeLibraries.apt.vm
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@ -30,6 +30,8 @@ Native Libraries Guide
compression" could refer to all *.so's you need to compile that are
specifically related to compression. Currently, however, this document
only addresses the native hadoop library (<<<libhadoop.so>>>).
The document for libhdfs library (<<<libhdfs.so>>>) is
{{{../hadoop-hdfs/LibHdfs.html}here}}.
* Native Hadoop Library
@ -64,14 +66,16 @@ Native Libraries Guide
* Components
The native hadoop library includes two components, the zlib and gzip
compression codecs:
The native hadoop library includes various components:
* zlib
* Compression Codecs (bzip2, lz4, snappy, zlib)
* gzip
* Native IO utilities for {{{../hadoop-hdfs/ShortCircuitLocalReads.html}
HDFS Short-Circuit Local Reads}} and
{{{../hadoop-hdfs/CentralizedCacheManagement.html}Centralized Cache
Management in HDFS}}
The native hadoop library is imperative for gzip to work.
* CRC32 checksum implementation
* Supported Platforms