[ http://issues.apache.org/jira/browse/HADOOP-538?page=all ]
Arun C Murthy updated HADOOP-538:
---------------------------------
Attachment: HADOOP-538_20061114.patch
Here is another patch incorporating Doug's feedback...
a) Custom built libraries in build directory override the ones in lib/native,
and hence there is no prebuilt/custom distinction
b) I have reworked to account for a 'compile.native' property which controls
whether the native stuff is built/tested/packaged...
$ ant -Dcompile.native=true package #compile native-hadoop
$ ant package #no native hadoop
I have had to define a new target: 'compile-core-classes' which replaces
existing 'compile-core' and redefined 'compile-core' as:
<target name="compile-core"
depends="compile-core-classes,compile-core-native">
</target>
The alternative to get 'ant -Dcompile.native=true package' or 'ant
-Dcompile.native=true test' to work was to add a 'depends="compile-native"' to
every target which has a 'depends="compile-core"' which I felt was error-prone
and difficult to maintain...
> Implement a nio's 'direct buffer' based wrapper over zlib to improve
> performance of java.util.zip.{De|In}flater as a 'custom codec'
> -----------------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-538
> URL: http://issues.apache.org/jira/browse/HADOOP-538
> Project: Hadoop
> Issue Type: Improvement
> Components: io
> Affects Versions: 0.6.1
> Reporter: Arun C Murthy
> Assigned To: Arun C Murthy
> Fix For: 0.9.0
>
> Attachments: HADOOP-538.patch, HADOOP-538_20061005.tgz,
> HADOOP-538_20061011.tgz, HADOOP-538_20061026.tgz, HADOOP-538_20061030.tgz,
> HADOOP-538_20061107.tgz, HADOOP-538_20061108.tgz, HADOOP-538_20061114.patch,
> HADOOP-538_benchmarks.tgz
>
>
> There has been more than one instance where java.util.zip's {De|In}flater
> classes perform unreliably, a simple wrapper over zlib-1.2.3 (latest stable)
> using java.nio.ByteBuffer (i.e. direct buffers) should go a long way in
> alleviating these woes.
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira
