Sorry I should've mentioned this. I've installed snappy lib using
apt-get , my hadoop had no snappy support build in.
Peter
On 10.12.2014 19:28, Ted Yu wrote:
See:
https://issues.apache.org/jira/browse/HADOOP-9911
Can you recompile snappy for 64-bit system ?
Cheers
On Wed, Dec 10, 2014 at 9:22 AM, peterm_second <[email protected]
<mailto:[email protected]>> wrote:
Hi Fabio ,
Thanks for the reply, but unfortunately it didn't work. I am using
vanilla hadoop 2.4 with vanilla hive 0.14 and so on, I am using
the vanilla distros.
I did set the HADOOP_COMMON_LIB_NATIVE_DIR but that didn't make
any change. What version were you using ?
Peter
On 10.12.2014 16:23, Fabio wrote:
Not sure it will help, but if the problem is native library
loading, I spent a loooong time trying anything to make it work.
I may suggest to try also:
export JAVA_LIBRARY_PATH=/opt/yarn/hadoop-2.5.0/lib/native
export HADOOP_COMMON_LIB_NATIVE_DIR=/opt/yarn/hadoop-2.5.0/lib
I have this both in the bash "init" script
(/etc/profile.p/...) and in
/opt/yarn/hadoop-2.5.0/etc/hadoop/hadoop-env.sh; quite sure
it's redundant, but as long as it works I don't change it.
I see here I commented out my attempts to set HADOOP_OPTS, so
maybe it's not necessary.
I don't see anything in my .xml config files.
Also, someone says to compile the libraries under your 64 bit
system, since the ones in Hadoop are for a 32bit architecture.
Good luck
Fabio
On 12/10/2014 02:57 PM, peterm_second wrote:
Hi guys,
I have a hadoop + hbase + hive application,
For some reason my cluster is unable to find the snappy
native library
Here is the exception :
org.apache.hadoop.util.NativeCodeLoader.buildSupportsSnappy()Z
at
org.apache.hadoop.util.NativeCodeLoader.buildSupportsSnappy(Native
Method)
at
org.apache.hadoop.io.compress.SnappyCodec.checkNativeCodeLoaded(SnappyCodec.java:63)
at
org.apache.hadoop.io.compress.SnappyCodec.getCompressorType(SnappyCodec.java:132)
at
org.apache.hadoop.io.compress.CodecPool.getCompressor(CodecPool.java:148)
at
org.apache.hadoop.io.compress.CodecPool.getCompressor(CodecPool.java:163)
at
org.apache.hadoop.mapred.IFile$Writer.<init>(IFile.java:115)
at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpill(MapTask.java:1583)
at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:1462)
at
org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:437)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:342)
at
org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:167)
at java.security.AccessController.doPrivileged(Native
Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
at
org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)
I am working with a 64bit ubuntu 14.04LTS. I've installed
snappy on my os and added the coppied the libs to
hadoop_home/lib/native
I've also added the libs to the JRE, but it still fails as
if nothing is present.
I've added HADOOP_OPTS="-Djava.net.preferIPv4Stack=true
$GC_DEBUG_OPTS
-Djava.library.path=/usr/local/hadoop-2.4.0/lib/native
$HADOOP_OPTS"
in my yarn xml I have
<property>
<name>yarn.app.mapreduce.am
<http://yarn.app.mapreduce.am>.env</name>
<value>LD_LIBRARY_PATH=$HADOOP_HOME/lib/native</value>
</property>
in my mapred-site.xml i have
<property>
<name>mapred.child.java.opts</name>
<value>
-Djava.library.path=/usr/local/hadoop-2.4.0/lib/native</value>
</property>
<property>
<name>mapreduce.reduce.java.opts</name>
<value>-Djava.library.path=/usr/local/hadoop-2.4.0/lib/native</value>
</property>
The last two were a desperation move.
The result is always the same. Any ideas would be welcomed.
Thanks,
Peter
