Re: Can I start a Hadoop job from an EJB?

2012-02-08 Thread Sanjeev Verma
This is based on my understanding and no real life experience, so going to go out on a limb here :-)...assuming that you are planning on kicking off this map-reduce job based on a event of sorts (a file arrived and is ready to be processed?), and no direct user wait is involved, then yes, I would

Re: cassandra data to hadoop

2011-12-23 Thread Sanjeev Verma
Hey Ravi: Hadoop newbie here, so pardon me if I am pointing out the obvious - have you taken a look at this link - http://wiki.apache.org/cassandra/HadoopSupport Looks like Cassandra 0.6 onwards supports output to mapreduce. Regards Sanjeev On Fri, 2011-12-23 at 07:13 -0800, ravikumar

Question on deprecations in Hadoop 0.20.203.0 API

2011-12-23 Thread Sanjeev Verma
Hey everyone: I am going through the hadoop in action book, and I guess the version of hadoop that book refers to is already old :-). The installation I have is 0.20.203.0, and in this version, a few key base classes have been deprecated, like: Interface InputSplit is deprecated in favor of

Re: cassandra data to hadoop

2011-12-23 Thread Sanjeev Verma
I am probably stating the obvious again - have you looked at the DBInputFormat class? Or, another option might be to programmatically move data to hdfs using the FileSystem api. On Dec 23, 2011 10:50 AM, ravikumar visweswara talk2had...@gmail.com wrote:

Re: Question on deprecations in Hadoop 0.20.203.0 API

2011-12-23 Thread Sanjeev Verma
:53 AM, Sanjeev Verma wrote: Hey everyone: I am going through the hadoop in action book, and I guess the version of hadoop that book refers to is already old :-). The installation I have is 0.20.203.0, and in this version, a few key base classes have been deprecated, like: Interface