Most voted questions under tag hadoop

+8 votes

0 answers

Hadoop native and snappy library?

posted Feb 11, 2014 by Abhay Kulkarni

+6 votes

0 answers

Backup NameNode metadata in HA configuration

posted Jan 31, 2014 by Dewang Chaudhary

+4 votes

1 answer

Please explain Hadoop Architecture?

posted Dec 20, 2016 by Karthick.c

+4 votes

0 answers

Hadoop / HBase hotspotting / overloading specific nodes

posted Oct 9, 2014 by anonymous

+4 votes

0 answers

Hadoop Datanode configuration RAM and Cores

posted Oct 7, 2014 by anonymous

+4 votes

0 answers

How can I modify socket limit in linux with hadoop?

posted Apr 23, 2014 by Kiran Kumar

+4 votes

2 answers

Add few record(s) to a Hive table or a HDFS file on a daily basis

posted Feb 10, 2014 by Tarun Singhal

+4 votes

0 answers

Hadoop upgrading/migrating downtime from Apache Hadoop 1.x to 2.x

posted Jan 16, 2014 by Deepti Singh

+3 votes

0 answers

Explain the difference between HBase and Hive?

posted Jun 30, 2017 by Karthick.c

+3 votes

1 answer

Why Hadoop doesn’t support Updates and append?

posted Nov 29, 2016 by Shyam

+3 votes

0 answers

Hadoop client setup to access remote cluster

posted Oct 7, 2015 by anonymous

+3 votes

1 answer

Is there a way to run Mapreduce with mongodb as input and output to HDFS?

posted Oct 1, 2015 by anonymous

+3 votes

0 answers

How to find execution time of a MapReduce job?

posted May 15, 2015 by Sudhakar Singh

+3 votes

0 answers

Can we control data distribution and load balancing in Hadoop Cluster?

posted May 3, 2015 by Sudhakar Singh

+3 votes

2 answers

Hadoop: How reduce tasks know which partition they should read?

posted Mar 9, 2015 by anonymous

+3 votes

0 answers

Problems installing Hadoop on Windows 7 enterprise N

posted Mar 9, 2015 by anonymous

+3 votes

0 answers

How to partition a file to smaller size for performing KNN in hadoop mapreduce

posted Jan 15, 2015 by Deepak Dasgupta

+3 votes

0 answers

Support multiple block placement policies for HDFS?

posted Sep 15, 2014 by anonymous

+3 votes

2 answers

Is it possible to access a hadoop 1 file system (hdfs) via the hadoop 2.2.0 command line tools?

posted Feb 1, 2014 by Majula Joshi

+3 votes

0 answers

Hadoop 2.2.0 YARN isolation and Windows

posted Jan 9, 2014 by Sheetal Chauhan

+3 votes

1 answer

Ways to manage user accounts on hadoop cluster when using kerberos security

posted Jan 7, 2014 by Ahmed Patel

+3 votes

2 answers

Unable to compile hadoop source code

posted Jan 7, 2014 by Mandeep Sehgal

+3 votes

0 answers

accessing hadoop filesystem from Tomcat

posted Jan 6, 2014 by Deepti Singh

+3 votes

1 answer

multiusers in hadoop through LDAP

posted Dec 10, 2013 by Deepankar Dubey

+3 votes

1 answer

Hadoop:Name node and data node replacement

posted Dec 9, 2013 by Satish Mishra

+3 votes

0 answers

Hadoop Multi-tenant cluster setUp

posted Dec 5, 2013 by Abhay Kulkarni

+3 votes

1 answer

Hadoop-2.2.0 "mapred.child.java.opts"

posted Dec 4, 2013 by Luv Kumar

+2 votes

0 answers

What are the different types of tombstone markers in HBase for deletion?

posted Jul 26, 2017 by Karthick.c

+2 votes

0 answers

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

+2 votes

0 answers

Explain about the partitioning, shuffle and sort phase in Hadoop?

posted Jun 30, 2017 by Karthick.c

+2 votes

0 answers

What is the best hardware configuration to run Hadoop?

posted Jun 22, 2017 by Karthick.c

+2 votes

1 answer

What is the process to change the files at arbitrary locations in HDFS?

posted Jan 11, 2017 by Jdk

+2 votes

1 answer

How can you overwrite the replication factors in HDFS?

posted Jan 11, 2017 by Jdk

+2 votes

1 answer

Explain about the process of inter cluster data copying?

posted Dec 22, 2016 by Karthick.c

+2 votes

1 answer

What is Hadoop Ecosystem?

posted Nov 29, 2016 by Shyam

+2 votes

0 answers

Can technology in Database engines like MySQL, Oracle be changed so they work like Hadoop?

posted May 27, 2016 by Abhay

+2 votes

0 answers

How to include hadoop jars in oozie package

posted May 18, 2016 by anonymous

+2 votes

0 answers

MongoDB Hadoop Connector Set-up on EC2?

posted Apr 18, 2016 by Deepti Singh

+2 votes

0 answers

How do I customize data placement on DataNodes (DN) of Hadoop cluster?

posted Oct 27, 2015 by Sudhakar Singh

+2 votes

0 answers

How to find min, max and mean of wordcount from text file in hadoop mapreduce?

posted Oct 16, 2015 by Sathish

+2 votes

0 answers

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

posted Jul 13, 2015 by anonymous

+2 votes

1 answer

How to access value of variable in Driver class which has been declared and modified inside Mapper class?

posted May 12, 2015 by Sudhakar Singh

+2 votes

0 answers

Hadoop: Filtering by value in Reducer

posted May 11, 2015 by Kumar Mitrasen

+2 votes

0 answers

Hive LOAD DATA INPATH imports all records twice?

posted May 8, 2015 by Ramakrishnan

+2 votes

2 answers

What is Hadoop and Where did Hadoop come from?

posted Apr 10, 2015 by Vrije Mani Upadhyay

+2 votes

0 answers

Run my own application master on a specific node in a YARN cluster

posted Mar 30, 2015 by anonymous

+2 votes

0 answers

Hadoop: got Java.lang.NullPointerException on two node when I restart cluster

posted Mar 17, 2015 by anonymous

+2 votes

0 answers

How to run hive on windows 7?

posted Mar 9, 2015 by anonymous

+2 votes

0 answers

What skills to Learn to become Hadoop Admin

posted Mar 7, 2015 by Sridharan

+2 votes

0 answers

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

posted Feb 27, 2015 by anonymous