Thanks, What if I want to use this encryption in a cluster with hbase running on top of hadoop? Can't hadoop be configured to automatically encrypt each file which is going to be written on it? If not I probably should be asking how to enable encryption on hbase, and asking this question on the hbase mailing list, right?
On Tue, Aug 7, 2012 at 12:32 PM, Harsh J <[email protected]> wrote: > Farrokh, > > The codec org.apache.hadoop.io.compress.crypto.CyptoCodec needs to be > used. What you've done so far is merely add it to be loaded by Hadoop > at runtime, but you will need to use it in your programs if you wish > for it to get applied. > > For example, for MapReduce outputs to be compressed, you may run an MR > job with the following option set on its configuration: > > > "-Dmapred.output.compression.codec=org.apache.hadoop.io.compress.crypto.CyptoCodec" > > And then you can notice that your output files were all properly > encrypted with the above codec. > > Likewise, if you're using direct HDFS writes, you will need to wrap > your outputstream with this codec. Look at the CompressionCodec API to > see how: > http://hadoop.apache.org/common/docs/stable/api/org/apache/hadoop/io/compress/CompressionCodec.html#createOutputStream(java.io.OutputStream) > (Where your CompressionCodec must be the > org.apache.hadoop.io.compress.crypto.CyptoCodec instance). > > On Tue, Aug 7, 2012 at 1:11 PM, Farrokh Shahriari > <[email protected]> wrote: > > > > Hello > > I use "Hadoop Crypto Compressor" from this site" > https://github.com/geisbruch/HadoopCryptoCompressor"; for encryption hdfs > files. > > I've downloaded the complete code & create the jar file,Change the > propertise in core-site.xml as the site says. > > But when I add a new file,nothing has happened & encryption isn't > working. > > What can I do for encryption hdfs files ? Does anyone know how I should > use this class ? > > > > Tnx > > > > > -- > Harsh J >
