[
http://issues.apache.org/jira/browse/HADOOP-256?page=comments#action_12413660 ]
Arun C Murthy commented on HADOOP-256:
--------------------------------------
Doug,
Appreciate your feedback... some minor queries/responses:
a) I'm working on getting the whole thing integrated with build.xml/ant and
also about putting all outputs in the top-level build directory. librecordio
led me down the wrong garden path.
b) Can you please elaborate on the issues you had with LDFLAGS? On my
system (Gentoo GNU/Linux - 2.6.16.11) make/makeclean works for me i.e. there
are no issues building it. I'm relying on $JAVA_HOME in my Makefile (it's set
to /opt/sun-jdk-1.5.0.06 on my box - afaik it's the recommended way?) to point
me libjvm.so. This isn't prefect (e.g. $(JAVA_HOME)/jre/lib/i386/server won't
work on non i386 architectures??) Is there a better alternative?
Since I wasn't clear which system path to dump the .so I'm building (any
suggestions?), I just used LD_PRELOAD to run my executable (hdfs_test) - admit
I should have clearly pointed this out.
For the same reason I had to resort to --rpath tricks to get TestDFSCIO
to work (i.e. both hdfs_read & hdfs_write executables have an --rpath for
libhdfs.so.1). This was very necessary for getting the hdfs_{read|write} to
work with map/reduce. Appreciate any suggestions...
c) Does it make sense to just copy the executables from
$(HADOOP_HOME)/libhdfs to /tmp/TestDFSCIO from the client (initialization
phase) on which the tests are initiated? Admit this completely slipped my mind,
glaringly. My bad.
thanks,
Arun
> Implement a C api for hadoop dfs
> --------------------------------
>
> Key: HADOOP-256
> URL: http://issues.apache.org/jira/browse/HADOOP-256
> Project: Hadoop
> Type: New Feature
> Components: dfs
> Reporter: Arun C Murthy
> Attachments: libhdfs.patch
>
> Implement a C api for hadoop dfs to ease talking to hadoop's dfs from native
> C/C++ applications.
--
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
