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HADOOP-11313. Adding a document about NativeLibraryChecker. Contributed by Tsuyoshi OZAWA. 

(cherry picked from commit 1b3bb9e7a3)
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cnauroth 2014-12-06 20:12:31 -08:00
parent 00528ad1ad
commit 308b75571b
2 changed files with 21 additions and 0 deletions
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3
hadoop-common-project/hadoop-common/CHANGES.txt
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@ -47,6 +47,9 @@ Release 2.7.0 - UNRELEASED
HADOOP-11356. Removed deprecated o.a.h.fs.permission.AccessControlException.
(Li Lu via wheat9)
HADOOP-11313. Adding a document about NativeLibraryChecker.
(Tsuyoshi OZAWA via cnauroth)
OPTIMIZATIONS
HADOOP-11323. WritableComparator#compare keeps reference to byte array.

18
hadoop-common-project/hadoop-common/src/site/apt/NativeLibraries.apt.vm
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@ -164,6 +164,24 @@ Native Libraries Guide
* If something goes wrong, then:
<<<INFO util.NativeCodeLoader - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable>>>
* Check
NativeLibraryChecker is a tool to check whether native libraries are loaded correctly.
You can launch NativeLibraryChecker as follows:
----
$ hadoop checknative -a
14/12/06 01:30:45 WARN bzip2.Bzip2Factory: Failed to load/initialize native-bzip2 library system-native, will use pure-Java version
14/12/06 01:30:45 INFO zlib.ZlibFactory: Successfully loaded & initialized native-zlib library
Native library checking:
hadoop: true /home/ozawa/hadoop/lib/native/libhadoop.so.1.0.0
zlib: true /lib/x86_64-linux-gnu/libz.so.1
snappy: true /usr/lib/libsnappy.so.1
lz4: true revision:99
bzip2: false
----
* Native Shared Libraries
You can load any native shared library using DistributedCache for