Most voted questions under tag hadoop

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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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1 answer

Why can FSDataInputStream.read() only read 2^17 bytes in hadoop2.0?

posted Mar 7, 2014 by Meenal Mishra

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2 answers

Best practice of migrating hadoop 1.0.1 to hadoop 2.2.3

posted Mar 6, 2014 by Amit Mishra

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1 answer

Streaming data access in HDFS: Design Feature

posted Mar 5, 2014 by Abhay Kulkarni

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1 answer

Hadoop: jobtracker.jsp doesnot work?

posted Mar 3, 2014 by Sanketi Garg

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1 answer

Client and NN communication in Hadoop?

posted Feb 27, 2014 by Mandeep Sehgal

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1 answer

How to set heartbeat in Hadoop?

posted Feb 27, 2014 by Tarun Singhal

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3 answers

Is there any benchmarks or 'performance heuristics' for Hadoop?

posted Feb 24, 2014 by Dewang Chaudhary

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1 answer

Hadoop YARN 2.2.0 Streaming Memory Limitation?

posted Feb 24, 2014 by Jagan Mishra

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2 answers

HDFS data transfer is faster than SCP based transfer?

posted Jan 24, 2014 by Deepti Singh

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0 answers

HDFS federation configuration

posted Jan 23, 2014 by Bob Wise

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1 answer

How to install Snappy for Hadoop

posted Jan 1, 2014 by Deepak Dasgupta

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1 answer

Hadoop vs Ceph and GlusterFS

posted Dec 28, 2013 by Sanketi Garg

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2 answers

multinode hadoop cluster on vmware

posted Dec 18, 2013 by Jagan Mishra

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HDFS Data Integrity in copyToLocal

posted Dec 18, 2013 by Ahmed Patel

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0 answers

How to set the environment variables in Hadoop 2.2.0

posted Dec 16, 2013 by Bob Wise

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2 answers

How to set hadoop.tmp.dir if I have multiple disks per node?

posted Dec 16, 2013 by Sheetal Chauhan

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Issue about datanode memory usage with Hadoop?

posted Dec 10, 2013 by Garima Jain

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1 answer

Execute hadoop job remotely and programmatically

posted Dec 9, 2013 by Meenal Mishra

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1 answer

Setting the HADOOP_HOME_DIR

posted Dec 8, 2013 by Anderson

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1 answer

How to set up a hadoop cluster?

posted Dec 8, 2013 by Sumit Pokharna

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1 answer

Operating with Hadoop ?

posted Aug 11, 2013 by Sudhakar Singh

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Hadoop UI Web Interface

posted May 9, 2018 by Bargavi Kalla

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Which demon is responsible for replication of data in Hadoop? [MCQ]

posted Nov 30, 2017 by anonymous

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The archive file created in Hadoop always has the extension of [MCQ]

posted Nov 30, 2017 by anonymous

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The inter process communication between different nodes in Hadoop uses [MCQ]

posted Nov 30, 2017 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

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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

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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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Define DataNode and how does NameNode tackle DataNode failures in HADOOP?

posted Jul 11, 2017 by Karthick.c

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

posted Dec 22, 2016 by anonymous

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1 answer

Windows and Linux hadoop cluster

posted Jul 20, 2016 by anonymous

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1 answer

Is it possible to turn on data node encryption without kerberos?

posted Apr 6, 2016 by anonymous

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What happens to a read operation when the file is moved to trash in HDFS?

posted Mar 8, 2016 by Naveena Garg

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1 answer

Can the blocks be broken in HDFS file system?

posted Nov 25, 2015 by anonymous

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1 answer

Unable to use ./hdfs dfsadmin -report with HDFS Federation

posted Aug 24, 2015 by Bob Wise

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HDFS ls command pretty slow

posted Jul 28, 2015 by anonymous

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1 answer

Can anyone provide me steps to grant a particular user access equivalnent to that of "hdfs" user in hadoop.

posted Jul 7, 2015 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

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What does mean by TaskInstance in Hadoop?

posted Apr 8, 2015 by Amit Kumar Pandey

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1 answer

How does speculative execution work in Hadoop?

posted Dec 2, 2014 by Kali Mishra

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1 answer

Hadoop on Windows 8 with Java 8

posted Aug 28, 2014 by Naveena Garg

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1 answer

When I submit a map reduce job, would it only work on the files present at that point?

posted Aug 27, 2014 by Vijay Shukla

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1 answer

Hadoop: Is it a good idea to delete / move the default configuration xml file ?

posted Jul 21, 2014 by Sanketi Garg

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Where can I find information on Hadoop Security Best Practices?

posted Jul 15, 2014 by Kiran Kumar

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1 answer

HDFS: How quickly can I increase the number of replicas?

posted Jun 30, 2014 by Bob Wise

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2 answers

Hadoop: WholeFileInputFormat takes the entire input file as input or each record(input split) as whole?

posted Jun 28, 2014 by Amit Parthsarthi

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1 answer

How to work on Hadoop platform?

posted Jun 11, 2014 by Joy Dutta

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1 answer

How to upgrade from Hadoop 2.3 to Hadoop 2.4?

posted May 30, 2014 by Meenal Mishra

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HDFS and YARN security and interface impacts

posted Apr 20, 2014 by Sidharth