I need to access the counters from my mapper in my reducer.Is this possible?If so how is it done? As an example:
When I was trying the Map Reduce programming example from Hadoop in Action book based on Hadoop 0.20 API I got the error
I\'m trying to chain maps and reduces phases in one job. The problem is that I\'m running under hadoop 0.20.2 and the package org.apache.hadoop.mapred.lib.Chain seems to be deprecated and replaced by
I\'m currently evaluating HBase as a Datastore, but one question was left unanswered: HBase stores many copies of the same object on many nodes (aka replication). As HBase features so-called strong co
Does Hive support temporary 开发者_如何学Gotables? I can\'t find it in the apache docs. As of Hive 0.14.0 Thanks to @hwrdprkns for commenting. As of Hive 0.14.0 there is support for temporary tables h
I don\'t understand 开发者_运维技巧what types of apps can be used with Hadoop.Does each task have to be tailored for hadoop/mapreduce.For example, can you just associate any long running java processe
I have a problem while trying to extend HBase Put class. I have a code like this public class HBasePut extends Put {
I\'m new to hadoop and I\'ve spent the past couple hours trying to google this issue, but I couldn\'t find anything that helped. My problem is HDFS says the file is still open, even though the process
How do I implement a web search using Hadoop/Hbase. Can anyone please provide me some guidelines or tutorial just to get s开发者_开发知识库tarted?this article is about map-Reduce, and it gives some ex
Suppose I write a java program and i want to run it in Hadoop, then where should 开发者_开发技巧the file be saved?
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