Recent questions tagged hadoop

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How to import data to HBase from SQL server?

Apr 20, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,343 views
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Why minimum 3 Journal Nodes are required in Hadoop HA architecture?

Apr 20, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 12,747 views
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Declaring separator in the MapReduce(Hadoop 0.20)

Apr 20, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,295 views
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Cassandra for datawarehouse

Apr 20, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,533 views
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Difference between Hadoop file system and Linux

Apr 20, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 5,112 views
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HortonWorks Hadoop encryption tools and data security

Apr 20, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,934 views
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2 answers

Hadoop 3 compatibility with older versions of Hive, Pig, Sqoop and Spark

Apr 20, 2018 in Apache Spark by Shubham
 • 13,490 points • 7,784 views
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How to find Hadoop version in CDH?

Apr 19, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 10,342 views
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2 answers

hadoop copy a local file system folder to HDFS

Apr 19, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 26,931 views
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1 answer

Getting error in Custom Input Format

Apr 19, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,310 views
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1 answer

Error in Hadoop Mapreduce

Apr 19, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,946 views
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1 answer

How Hadoop replication works?

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,581 views
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Getting error in Hadoop: Output file already exist

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 10,690 views
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HDFS Location in Hadoop?

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,773 views
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2 answers

Download & Install Cloudera parcels without being connected to internet?

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,722 views
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1 answer

Installing Hive & Hadoop in VM

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 5,556 views
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How to print the content of a file in console present in HDFS?

Apr 19, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 6,937 views
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Hadoop single node cluster set up issues

Apr 19, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,687 views
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Why Hadoop is tightly bound to linux?

Apr 19, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,408 views
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How to upload file to HDFS in Ubuntu

Apr 19, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,558 views
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Map and Reduce task memory settings in Hadoop YARN

Apr 18, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,911 views
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1 answer

Hadoop for data migration

Apr 18, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,104 views
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1 answer

How to set the number of Map & Reduce tasks?

Apr 18, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,884 views
0 votes
1 answer

Setting Hive/Hadoop property using Hive Query

Apr 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,785 views
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1 answer

Getting error in Hadoop Streaming: Type mismatch in Key from Map

Apr 18, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,028 views
0 votes
1 answer

Getting error while building Hadoop core jar using ant.

Apr 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,767 views
0 votes
1 answer

Replication Factor in Hadoop?

Apr 18, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 2,000 views
0 votes
1 answer

How can I use my host machine’s web browser to check my HDFS services running in the VM?

Apr 18, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,539 views
0 votes
1 answer

What are the different ways to load data from Hadoop to Azure Data Lake?

Apr 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,942 views
0 votes
1 answer

How to tune Spark jobs & optimize the performance?

Apr 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,668 views
0 votes
2 answers

Hadoop is not able to find jps command

Apr 18, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 19,341 views
0 votes
1 answer

Why am I not able to see the Hadoop daemons that are running?

Apr 18, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,003 views
0 votes
2 answers

How can I list NameNode & DataNodes from any machine in the Hadoop cluster?

Apr 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 12,676 views
0 votes
1 answer

can't find start-all.sh in hadoop installation

Apr 17, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 10,370 views
0 votes
1 answer

Not able to find HDFS directory on my system?

Apr 17, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 8,631 views
0 votes
1 answer

In which directory Hadoop should be installed?

Apr 17, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,246 views
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2 answers

How to exit NameNode safe mode?

Apr 17, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 5,257 views
0 votes
1 answer

Is there any way to write "map only" Hadoop jobs ?

Apr 16, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,830 views
+1 vote
1 answer

http://localhost:50070 not working in HADOOP

Apr 16, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 46,242 views
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2 answers

Meaning of fs.defaultFS property in core-site.xml in hadoop

Apr 15, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 10,210 views
0 votes
2 answers

Function of “hadoop namenode -format” command

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 23,405 views
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1 answer

Is there a way to rebalance single Datanode in Hadoop.

Apr 15, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,605 views
0 votes
1 answer

Moving files in Hadoop using the Java API?

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 3,653 views
0 votes
1 answer

Deleting a directory with comma throwing an error

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,169 views
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11 answers

What is the command to start Job history server in Hadoop 2.x & how to get its UI?

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 24,554 views
0 votes
1 answer

Hadoop query regarding setJarByClass method of Job class

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 3,473 views
0 votes
1 answer

Best way of starting & stopping the Hadoop daemons with command line

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 12,279 views
0 votes
1 answer

Files for Configuring HDFS in Hadoop 2.2.0?

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,747 views
0 votes
1 answer

Getting error in MapReduce job.setInputFormatClass

Apr 15, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 2,880 views
0 votes
1 answer

How can I put file to HDFS directly without copying it local disk?

Apr 15, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 5,594 views
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