I am working on a project using map reduce and HBase. We are using Cloudera’s CDH3 distribution which has hbase-0.89.20100924+28 bundled
The Namenode in the Hadoop architecture is a single point of failure. How do people who have large Hadoop clusters cope with this pr开发者_如何学Gooblem?.
From this guide, I have successfully run the sample exercise. But on running my mapreduce job, I am getting the following error
I have a s3 bucket containing about 300gb of log files in no particular order. I want to partition this data for use in hadoop-hive using a date-time stamp so that log-lines related to a particular
I\'m having problems trying to get my head around getting a collection of types along with number of times a skill is found in that doc type.
I wanted to count all key\'s of my documents (inclusive embedded ones) of a collection. First I wrote a Java client to solve this. It took less than 4 seconds to show the result.
How do I define an ArrayWritable for a custom Hadoop type ? I am trying to implement an inverted index in Hadoop, with custom Hadoop types to store the data
I am开发者_如何学C trying to debug the WordCount example of Cloudera Hadoop but I can\'t. I\'ve logged the mapper and the reducer class, but in the console doesn\'t appear the log.
I want to run a chain of map reduce jobs, so the easiest solution seems to be jobcontroller. say I have two jobs, job1 and job2. and I want to run job2 after job1. Well, it faced some problems. after
Just wondering if anybody has done/aware about encoding/compressing large image into JPEG2000 format using Hadoop ?
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