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Showing posts with the label Hadoop

Encountered Ioexception While Registering Python Udf In Pig. File Helloworld.py Does Not Exist

Pytjon UDF : @outputSchema('word:chararray') def helloworld(): return 'Hello, World&#… Read more Encountered Ioexception While Registering Python Udf In Pig. File Helloworld.py Does Not Exist

Pyhive, Sqlalchemy Can Not Connect To Hadoop Sandbox

I have installed, pip install thrift pip install PyHive pip install thrift-sasl and since pip ins… Read more Pyhive, Sqlalchemy Can Not Connect To Hadoop Sandbox

Subprocess Popen To Run Commands (hdfs/hadoop)

I am trying to use subprocess.popen to run commands on my machine. This is what I have so far cmdve… Read more Subprocess Popen To Run Commands (hdfs/hadoop)

Mapreduce How To Allow Mapper To Read An Xml File For Lookup

In my MapReduce jobs, I pass a product name to the Mapper as a string argument. The Mapper.py scrip… Read more Mapreduce How To Allow Mapper To Read An Xml File For Lookup

Get A List Of Subdirectories

I know I can do this: data = sc.textFile('/hadoop_foo/a') data.count() 240 data = sc.textFi… Read more Get A List Of Subdirectories

Aws Elastic Mapreduce Doesn't Seem To Be Correctly Converting The Streaming To Jar

I have a mapper and reducer that work fine when I run them in the piped version: cat data.csv | ./m… Read more Aws Elastic Mapreduce Doesn't Seem To Be Correctly Converting The Streaming To Jar