Where do you compile your libhadoop.so.1.0.0? It is more like that you compiled libhadoop.so.1.0.0 in a environment with glibc 2.14, but tried to use it in an environment only have glibc 2.12. If you are using a hadoop compiled by yourself, then it is best to compile in an environment matching with your production. Yong
> Date: Tue, 11 Feb 2014 14:12:34 +0100 > From: [email protected] > To: [email protected] > Subject: Re: Hadoop native and snappy library > > Thanks... after looking at the sourcecode of the native library loading > process and activating the DEBUG messages I found this in the "hadoop.log": > > 2014-02-11 14:01:14,084 DEBUG org.apache.hadoop.util.NativeCodeLoader: > Failed to load native-hadoop with error: java.lang.UnsatisfiedLinkError: > /hadoop-2.2.0/lib/native/libhadoop.so.1.0.0: /lib64/libc.so.6: version > `GLIBC_2.14' not found (required by > /hadoop-2.2.0/lib/native/libhadoop.so.1.0.0) > > Is it possible to compile the native library with glibc 2.12, because at > the moment I am not able to upgrade glibc on the servers which run Hadoop. > > Best regards > Yves > > On 11.02.2014 13:29, Ted Yu wrote: > > See https://issues.apache.org/jira/browse/HBASE-10303 > > > > And https://hbase.apache.org/book.html#snappy.compression > > > > Cheers > > > > On Feb 11, 2014, at 4:16 AM, Yves Weissig <[email protected] > > <mailto:[email protected]>> wrote: > > > >> Hi list, > >> > >> I'm trying to enable the Hadoop native library and the snappy library > >> for compression in Hadoop 2.2.0, but I always end up with: > >> > >> ./hadoop/bin/hadoop checknative -a > >> Native library checking: > >> hadoop: false > >> zlib: false > >> snappy: false > >> lz4: false > >> bzip2: false > >> > >> I compiled hadoop-2.2.0-src from scratch for x64 and put the resulting > >> .so in hadoop/lib/native/. I also compiled snappy from scratch and put > >> it there. In a different approach I installed snappy via sudo apt-get > >> and then linked the resulting .so to hadoop/lib/native/libsnappy.so, > >> still no luck. > >> > >> What is going on here? Why won't Hadoop find my native libraries? Is > >> there any log where I can check what went wrong during loading? > >> > >> Best regards > >> Yves > >> >
