Hadoopy is a Python wrapper for Hadoop Streaming written in Cython.It's simple and fast.Hadoopy allows us to execute hadoop map-reduce and streaming python scripts.It provides similar interface as Hadoop API's for simple Hdfs access like viewing files, listing directories,etc. Also allows read/write sequence files of TypedBytes directly to HDFS in python .The main advantage of Hadoopy is that it's fully compatible with Oozie,for running multiple workflows.
Questions tagged [hadoopy]
15 questions
3
votes
1 answer
How are keys, values, and records delimited in Hadoop streaming, typedbytes, and/or rawbytes
I understand that that text records in Hadoop streaming are delimited by the newline character and that there is a configurable delimiter between keys and values (defaults to tab).
1) The structure of the rawbytes format suggests that no record or…
ChaseMedallion
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votes
2 answers
Cython & Hadoopy compiling error.. any ideas on a fix?
I'm trying to run Hadoopy, but am getting a compiling error on OS X:
ImportError: Building module failed: ["CompileError: command 'llvm-gcc-4.2' failed with exit status 1\n"
I have /Developer/usr/bin in my $PATH, and am running latest version of…
Dolan Antenucci
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2
votes
0 answers
How to read a CSV file from HDFS via Hadoopy?
I am trying to connect python to HDFS so that I can read that file row by row. I tried reading hadoopy tutorial but it reads data from HDFS which exist as key value pairs. What should be my approach?
I have tried this.…
user2740957
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0 answers
How to pass variables to a Mapper using Python's Hadoopy library?
When running a MapReduce job on Python based on the Hadoopy library, how to pass variables (in addition to the key and value pair) to a mapper?
I couldn't find any examples or documents clarifying this. Could someone show me an example or point…
user1036719
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1
vote
2 answers
How to save file in hadoop with python
I am trying to save file in Hadoop with python 2.7. I searched on the internet. I got some code to save a file in Hadoop but it is taking the entire folder while saving (total files in the folder are saving in Hadoop). But I need to save a specific…
Mulagala
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1
vote
1 answer
pydoop vs hadoopy - hadoop python client
While searching python client for Hadoop, I found two modules pydoop and hadoopy. It seems both are good enough to work with, but not sure which one has more advantages than the other to install one.
Murali Mopuru
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2 answers
how to access and manipulate pdf file's datas in Hadoop?
I want to read the PDF file using hadoop, how it is possible?
I only know that hadoop can process only txt files, so is there anyway to parse the PDF files to txt.
Give me some suggestion.
Balaji
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1 answer
Install hadoopy in google composer
I am using google composer.
How can we install hadoopy in google composer environment.
This page has steps for installing hadoopy in Linux machine
Github Clone
git clone https://github.com/bwhite/hadoopy.git
cd hadoopy
sudo python setup.py…
bob
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0 answers
How to install hadoopy package in python?
I'm trying to write a file to HDFS through Python Script with the below mentioned code.
import hadoopy
import os
hdfs_path = 'data.json'
def read_local_dir(local_path):
for fn in os.listdir(local_path):
path = os.path.join(local_path,…
user12345
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Read file from HDFS using Hadoopy
I am using Python to read file from HDFS. The library used is Hadoopy.
Earlier, I was able to write the corresponding file to HDFS using Hadoopy.
But it does not read from HDFS and store into the local file system.
The code is pasted below:
import…
User456898
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0
votes
1 answer
hadoopy.launch_frozen Cannot execute script
I'm running the command hadoopy.launch_frozen.
When I run my script, this error appears:
File "Task.py", line 22, in
hadoopy.launch_frozen(data_path, output_path, 'Main.py', temp_path=tmp_path)
File…
antonio
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1 answer
Hadoopy won't get past mkdir
I'm currently working on a project that makes use of hadoop (2.7.0) I have a two node cluster configured and working (for the most part). I can run mapper / reducer jobs manually withoud any problems. But when I try to start a job with hadoopy I get…
Nick Otten
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1 answer
Mapreduce failures log Hadoop
Where can i find a log which contains information about failure of mapreduce jobs? If something goes wrong I just get an error exit with status 1. I am running Hadoop 2.4.1 and using Hadoopy for mapreduce jobs.
Nemanja91
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4 answers
Data Node not started
I configured hadoop setting in my box and worked with example programs everything went fine and worked well all the Daemons also is in the running state. On the next day morning Data node not running.
0
votes
1 answer
apache Hadoop-2.0.0 aplha version installation in full cluster using fedration
I had installed hadoop stable version successfully. but confused while installing hadoop -2.0.0 version.
I want to install hadoop-2.0.0-alpha on two nodes, using federation on both machines. rsi-1, rsi-2 are hostnames.
what should be values of below…
