FAQ
Here we go:

# strings /usr/lib/hadoop/lib/native/libhadoop.so |grep zlib
Java_org_apache_hadoop_io_compress_zlib_ZlibCompressor_setDictionary
Java_org_apache_hadoop_io_compress_zlib_ZlibCompressor_getBytesRead
Java_org_apache_hadoop_io_compress_zlib_ZlibCompressor_getBytesWritten
Java_org_apache_hadoop_io_compress_zlib_ZlibCompressor_reset
Java_org_apache_hadoop_io_compress_zlib_ZlibCompressor_end
Java_org_apache_hadoop_io_compress_zlib_ZlibCompressor_deflateBytesDirect
Java_org_apache_hadoop_io_compress_zlib_ZlibCompressor_init
Java_org_apache_hadoop_io_compress_zlib_ZlibCompressor_initIDs
Java_org_apache_hadoop_io_compress_zlib_ZlibDecompressor_setDictionary
Java_org_apache_hadoop_io_compress_zlib_ZlibDecompressor_getBytesRead
Java_org_apache_hadoop_io_compress_zlib_ZlibDecompressor_getBytesWritten
Java_org_apache_hadoop_io_compress_zlib_ZlibDecompressor_getRemaining
Java_org_apache_hadoop_io_compress_zlib_ZlibDecompressor_reset
Java_org_apache_hadoop_io_compress_zlib_ZlibDecompressor_end
Java_org_apache_hadoop_io_compress_zlib_ZlibDecompressor_inflateBytesDirect
Java_org_apache_hadoop_io_compress_zlib_ZlibDecompressor_init
Java_org_apache_hadoop_io_compress_zlib_ZlibDecompressor_initIDs





# rpm -qa |grep zlib
zlib-devel-1.2.3-25.el6.x86_64
zlib-1.2.3-25.el6.x86_64
zlib-1.2.3-25.el6.i686


On Mon, Mar 4, 2013 at 5:55 PM, Robert Justice wrote:

Anurag,

Please let me know the output of:

strings /usr/lib/hadoop/lib/native/libhadoop.so |grep zlib
rpm -qa |grep zlib

Thanks,
Robert Justice
On Monday, March 4, 2013 7:24:10 PM UTC-6, tangri...@gmail.com wrote:

Hi All,

I am trying to create Seq files with gzip codec in CDH4 using the API
call in my map-red code :

SequenceFileOutputFormat.**setOutputCompressorClass(job,
GzipCodec.class);


But when I eun this job, I don't get files created with GzipCodec.

io.compression.codecs include GzipCodec.


Did somebody face this issue and any hints ?

Thanks,
Anurag Tangri
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