I have data files arranged in folders named as dates. Directory structure /data/2011/01/01 /data/2011/01/02
I am using the boto library to create a job flow in Amazons Elastic MapReduce Webservice (EMR). The开发者_JAVA技巧 following code should create a step:
I try to run HBase in a Pseudo-Distributed mode. But it doesn\'t work after I set hbase-site.xml. Each time I try to run a command inside hbase shell I get this error:
A few months ago, we installed CLoudera Hadoop 3 in our local machine and everything was fine. Recently we also installed Whirr to start working with clusters. Although we faced some problems, after a
I need to search over petabyte of data in CSV formate files. After indexing using LUCENE, the size of the indexing file is doubler开发者_Go百科 than the original file. Is it possible to reduce the ind
I recently started to use Hadoop and I have a problem while using a Mapfile as a input to a MapReduce job.
Is there an HDFS API that can copy an entire local d开发者_StackOverflowirectory to the HDFS? I found an API for copying files but is there one for directories?Use the Hadoop FS shell. Specifically:
I am getting this exception w开发者_StackOverflowhen for a while i didn\'t communicated with HBase:
I want to create a file in HDFS that has a bunch of lines, each generated by a different call to map. I don\'t care about the order of the lines, just that they all get added to the file. How do I acc
I\'m new to hadoop and trying to get my first non-trivial program working, and want to view standard out for debugging purposes. It\'s my understanding that standard out is directed into log files som
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