Most viewed questions under tag hadoop

+1 vote

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Uneven load balance between hadoop cluster

posted Jan 18, 2016 by anonymous

+1 vote

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Issue about enable UseNUMA flag in hadoop framework

posted Sep 19, 2015 by anonymous

+1 vote

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Hadoop: how to assign unique ID (Long Value) in mapper

posted Jun 25, 2015 by anonymous

+4 votes

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Hadoop Datanode configuration RAM and Cores

posted Oct 7, 2014 by anonymous

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How to write a Job for importing Files from an external Rest API into Hadoop

posted Jul 30, 2017 by anonymous

+2 votes

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Hive LOAD DATA INPATH imports all records twice?

posted May 8, 2015 by Ramakrishnan

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Hadoop UI Web Interface

posted May 9, 2018 by Bargavi Kalla

+1 vote

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Using Slider as a default mechanism for HBase on HDP 2.2

posted Feb 22, 2015 by anonymous

+1 vote

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Image processing with hadoop

posted Jul 28, 2014 by Deepti Singh

+2 votes

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Error while writing to HDFS NFS from windows

posted Nov 7, 2014 by anonymous

+1 vote

1 answer

What is the purpose of RecordReader in Hadoop?

posted Dec 2, 2014 by Kali Mishra

+1 vote

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Getting times for all the jobs run on a YARN cluster

posted Mar 21, 2014 by Kiran Kumar

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Hadoop Java API to get maximum-am-resource-percent?

posted Dec 22, 2016 by anonymous

+3 votes

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accessing hadoop filesystem from Tomcat

posted Jan 6, 2014 by Deepti Singh

+1 vote

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What is the difference between Hadoop and Traditional RDBMS?

posted Jun 21, 2017 by Karthick.c

+1 vote

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DNS pre request for hadoop install

posted Apr 2, 2014 by Dewang Chaudhary

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How to get info about which data in hdfs or file system that a MapReduce job visits?

posted Jul 27, 2017 by anonymous

+1 vote

1 answer

How to set up a hadoop cluster?

posted Dec 8, 2013 by Sumit Pokharna

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What is a rack awareness and on what basis is data stored in a rack?

posted Jul 14, 2017 by Karthick.c

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1 answer

How does speculative execution work in Hadoop?

posted Dec 2, 2014 by Kali Mishra

+1 vote

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How to use docker in Hadoop, with patch of YARN-1964?

posted Aug 12, 2014 by anonymous

+2 votes

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Is it possible to use multi-threaded maven mode to build hadoop?

posted Feb 27, 2015 by anonymous

+1 vote

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Hadoop: Unable to view logs through Web UI + Amazon EC2

posted Jan 19, 2016 by anonymous

+2 votes

0 answers

How hadoop 2.x perform better than hadoop 1.x

posted Dec 6, 2013 by Seema Siddique

+1 vote

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Control rate of preemption in Yarn?

posted Apr 11, 2016 by anonymous

+1 vote

1 answer

Setting the HADOOP_HOME_DIR

posted Dec 8, 2013 by Anderson

+2 votes

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Hadoop: namenode doesn't update block locations when data directories of a datanode is changed?

posted Jul 13, 2015 by anonymous

+2 votes

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What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?

posted Jul 26, 2017 by Karthick.c

+1 vote

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What concept that Hadoop framework works?Please explain with example?

posted Jun 21, 2017 by Karthick.c

+2 votes

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MongoDB Hadoop Connector Set-up on EC2?

posted Apr 18, 2016 by Deepti Singh

+1 vote

1 answer

Client and NN communication in Hadoop?

posted Feb 27, 2014 by Mandeep Sehgal

+2 votes

1 answer

Do I need to start haddop on slave also?

posted Feb 17, 2014 by Amit Mishra

+1 vote

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How to learn hadoop mapReduce on mongodb in java

posted Apr 12, 2016 by anonymous

+3 votes

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Explain the difference between HBase and Hive?

posted Jun 30, 2017 by Karthick.c

+1 vote

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What are the different operational commands in HBase at record level and table level?

posted Dec 26, 2016 by Karthick.c

+1 vote

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Traditional BI (ETL) approach to Hadoop ecosystem

posted Jun 9, 2014 by anonymous

+3 votes

0 answers

Support multiple block placement policies for HDFS?

posted Sep 15, 2014 by anonymous

+6 votes

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Backup NameNode metadata in HA configuration

posted Jan 31, 2014 by Dewang Chaudhary

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HDFS and YARN security and interface impacts

posted Apr 20, 2014 by Sidharth

+1 vote

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Are there any other security tools for security in hadoop

posted Aug 13, 2014 by Honey

+2 votes

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HDFS dfsclient: possible to force storage datanode ?

posted Aug 20, 2014 by anonymous

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How many daemon processes we can run on a Hadoop cluster?

posted Apr 8, 2015 by Amit Kumar Pandey

+2 votes

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What skills to Learn to become Hadoop Admin

posted Mar 7, 2015 by Sridharan

+2 votes

0 answers

How to include hadoop jars in oozie package

posted May 18, 2016 by anonymous

+1 vote

0 answers

Hadoop streaming - Class not found

posted Jul 23, 2014 by Luv Kumar

+1 vote

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Adjusting locality calculation in hadoop?

posted Jun 16, 2014 by Garima Jain

+1 vote

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Joins in Hadoop

posted Jun 24, 2015 by anonymous

+1 vote

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Something kill hadoopuser applications

posted Feb 13, 2016 by anonymous

+2 votes

0 answers

Unit tests on Hadoop Cluster

posted Jan 5, 2015 by anonymous

+1 vote

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Provisioning a physical host into an existing HDFS/Yarn cluster

posted Jan 26, 2016 by anonymous