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I am running a Hadoop program and have the following as my input file, input.txt: 1 2 mapper.py: i… Read more Hadoop: Output File Has Double Output

I have a hadoop cluster running on centos 6.5. I am currently using python 2.6. For unrelated reaso… Read more List All Files In Hdfs Python Without Pydoop

We have a hive warehouse, and wanted to use spark for various tasks (mainly classification). At tim… Read more Reading And Writing From Hive Tables With Spark After Aggregation

I am very frustrated by Spark. An evening wasted thinking that I was doing something wrong but I ha… Read more Spark On Windows 10. 'files\spark\bin\..\jars""\' Is Not Recognized As An Internal Or External Command

I'm currently using Python 3 and would like to load a pickle file out of HDFS. from pywebhdfs.… Read more Unpickle File From Hdfs

I have been running Hadoop MapReduce jobs by logging into SSH via PuTTy which requires that I enter… Read more Launch Hadoop Mapreduce Job Via Python Without Putty/ssh

I have a simple question to ask. I have been trying to execute HIVE queries from Python using impyl… Read more Why "importerror: No Module Named Builtins" Appears After Importing Hive From Pyhive Package?

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

My map task completes successfully and I can see the application logs, but reducer stays in pending… Read more Hadoop-streaming : Reduce Task In Pending State Says "no Room For Reduce Task."

I have data in form: 37101000ssd48800^A1420asd938987^A2011-09-10^A18:47:50.000^A99.00^A1^A0^A 37101… Read more Delimiting Carat A In Python

Inspired from this question, I wrote some code to store an RDD (which was read from a Parquet file)… Read more Read A Distributed Tab Delimited Csv

I have a python code in which I am calling a shell command. The part of the code where I did the sh… Read more /bin/sh: Line 62: To: Command Not Found

My question is similar to : hadoop streaming: how to see application logs? (The link in the answer … Read more Hadoop Streaming: Where Are Application Logs?

I'm on a W8 machine, where I use Python (Anaconda distribution) to connect to Impala in our Had… Read more Connect To Impala Using Impyla Client With Kerberos Auth

I followed this article to send some data to AWS ES, and I used the jar elasticsearch-hadoop. Here … Read more Write Data From Pyspark To Elasticsearch

I am trying to do what should be a simple task: I need to convert a text file to upper case using H… Read more Hadoop Streaming With Python: Keeping Track Of Line Numbers

I would like to populate a database of Postgresql by using a mapper with MrJob and Hadoop 2.7.1. I … Read more How To Populate A Postgresql Database With Mrjob And Hadoop