I need to run some Pig scripts sequentially in Hadoop.They must be run separately.Any suggestions? update
I\'m using Hadoop\'s MapReduce.I have a a file as an input to the map function, the map function does something (not relevant for the question).I\'d like my reducer to take the map\'s output and write
I am trying include a python package (NLTK) with a Hadoop streaming job, but am not sure how to do this without including every file manually via the CLI argument, \"-file\".
I am struggling with a very basic issue in hadoop streaming in the \"-file\" option. First I tried the very basic example in streaming:
I am analyzing a large amount of files in a Hadoop MapReduce job, with the input files being in .txt format. Both my mapper and my reducer are written in Python.
I am trying to get an input from the开发者_如何学编程 user and pass it to my mapper class that I have created but whenever the value always initialises to zero instead of using the actual value the us
I have about 2 million records which have about 4 string fields each which needs to be checked for duplicates. To be more specific I have name, phone, address and fathername as fields and I must check
Trying to execute WordCount example from cassandra and getting an error: Exception in thread \"main\" java.lang.NoSuchMethodError: org.apache.thrift.meta_data.FieldValueMetaData.(BZ)V
Whenever I am trying to use Java class files as my mapper and/or reducer I am getting the following error:
I\'m new at NoSQL and now I\'m trying to use HBase for file storage. I\'ll store files in HBase as binary.
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