Recent questions tagged bigdata

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1 answer

Getting error while connecting zookeeper in Kafka - Spark Streaming integration

May 24, 2018 in Apache Spark by user-code
 • 2,621 views
+1 vote
1 answer

Can anyone explain what is RDD in Spark?

May 24, 2018 in Apache Spark by coder_jazz
 • 2,457 views
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1 answer

How to set keys & access tokens for Twitter Spark streaming?

May 24, 2018 in Apache Spark by coder_jazz
 • 1,475 views
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1 answer

out of Memory Error in Hadoop

May 22, 2018 in Big Data Hadoop by coldcode
 • 2,080 points • 1,657 views
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1 answer

When is the reduce tasks start in Hadoop?

May 22, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 3,439 views
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1 answer

Is a HDFS block sequential ?

May 21, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,431 views
0 votes
1 answer

Is there any way to pull data from Mainframe to Hadoop?

May 21, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 2,379 views
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1 answer

Sqoop vs Oracle Hadoop Connectors

May 18, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 747 views
0 votes
1 answer

Can we use Apache Mahout without Hadoop dependency?

May 17, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 816 views
0 votes
1 answer

How to install Hadoop in Ubuntu?

May 17, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 482 views
0 votes
3 answers

How to connect Spark to a remote Hive server?

May 17, 2018 in Big Data Hadoop by code799
 • 12,212 views
0 votes
1 answer

What is the command to check the number of cores in Spark?

May 17, 2018 in Big Data Hadoop by code799
 • 6,554 views
0 votes
1 answer

Hadoop combiners with aggregator functions

May 16, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 453 views
0 votes
1 answer

Visualization Tool in Cloudera CDH

May 16, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 1,075 views
0 votes
1 answer

How can anyone recover deleted HDFS data?

May 16, 2018 in Big Data Hadoop by code799
 • 10,387 views
0 votes
1 answer

Disabling Kerberos authentication in Hadoop

May 16, 2018 in Big Data Hadoop by code799
 • 1,663 views
0 votes
1 answer

Getting error in JAVA_HOME variable.

May 11, 2018 in Big Data Hadoop by punk100
 • 2,028 views
0 votes
1 answer

How to change the checkpointing duration in Hadoop

May 11, 2018 in Big Data Hadoop by punk100
 • 1,251 views
0 votes
1 answer

How to change the replication factor of specific directory in Hadoop?

May 11, 2018 in Big Data Hadoop by vardy_hero
 • 3,427 views
0 votes
1 answer

Hadoop Command to merge edit logs with fsimage

May 11, 2018 in Big Data Hadoop by us0101
 • 1,710 views
0 votes
1 answer

Is there any way to include a python package with Hadoop streaming job?

May 10, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 2,003 views
0 votes
10 answers

Difference between single node & pseudo-distributed mode in Hadoop?

May 10, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 18,537 views
0 votes
1 answer

Sqoop version compatible with Hadoop 0.20?

May 9, 2018 in Big Data Hadoop by hack01
 • 849 views
0 votes
1 answer

Java MapReduce error saying No FileSystem for scheme:hdfs

May 9, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,332 views
0 votes
1 answer

Is there any way to access Hadoop web UI in linux?

May 9, 2018 in Big Data Hadoop by coldcode
 • 2,080 points • 3,672 views
0 votes
1 answer

Why does sortBy transformation trigger a Spark job?

May 8, 2018 in Apache Spark by shams
 • 3,670 points • 1,439 views
0 votes
1 answer

How to get the number of elements in partition?

May 8, 2018 in Apache Spark by Data_Nerd
 • 2,390 points • 1,982 views
0 votes
2 answers

Difference between HDFS and NFS

May 8, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 14,367 views
+1 vote
1 answer

How can we list files in HDFS directory as per timestamp?

May 8, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 11,362 views
0 votes
1 answer

Does setup & clean methods in Hadoop MapReduce is executed after each task?

May 8, 2018 in Big Data Hadoop by king_of_code
 • 2,009 views
0 votes
1 answer

Cannot connect to Hive from MicroStrategy BI tool

May 8, 2018 in Big Data Hadoop by mac113
 • 1,024 views
0 votes
1 answer

Where does HDFS stores data on the local file system?

May 8, 2018 in Big Data Hadoop by code799
 • 15,867 views
0 votes
1 answer

Is it compulsory to have the hadoop user as sudo user?

May 8, 2018 in Big Data Hadoop by hack099
 • 2,141 views
0 votes
1 answer

Why Apache Pig is used instead of Hadoop?

May 8, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 2,215 views
0 votes
1 answer

ApplicationMaster in YARN Architecture

May 8, 2018 in Big Data Hadoop by Atul
 • 10,240 points • 1,072 views
0 votes
1 answer

How is Apache Spark different from the Hadoop approach?

May 7, 2018 in Apache Spark by Data_Nerd
 • 2,390 points • 999 views
0 votes
1 answer

start-master and start-all?

May 7, 2018 in Apache Spark by Data_Nerd
 • 2,390 points • 2,041 views
0 votes
1 answer

How to delete a directory from Hadoop cluster which is having comma(,) in its name?

May 7, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,821 views
0 votes
1 answer

Can we use HDFS to store git repositories?

May 7, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 1,222 views
0 votes
1 answer

What is the default location of Hadoop log files & how can I change that location?

May 4, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 20,650 views
0 votes
1 answer

Submitting MapReduce job using jobConf object vs job object

May 4, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,680 views
0 votes
1 answer

Which Data Structure is used in case of Map Reduce?

May 4, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,311 views
0 votes
9 answers

Is there any way to check which Hadoop daemons are running?

May 4, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 45,568 views
0 votes
1 answer

How to find the used cache in HDFS

May 4, 2018 in Big Data Hadoop by coldcode
 • 2,080 points • 2,102 views
0 votes
1 answer

What happend while formatting hadoop namenode?

May 4, 2018 in Big Data Hadoop by Atul
 • 10,240 points • 441 views
0 votes
1 answer

Setting the Number of Map tasks and Reduce Tasks not Working

May 4, 2018 in Big Data Hadoop by Atul
 • 10,240 points • 1,256 views
0 votes
1 answer

Where Big Data tools like Hadoop and Spark comes into picture when we talk about ETL?

May 3, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 430 views
+1 vote
12 answers

How to check size of HDFS directory?

May 3, 2018 in Big Data Hadoop by kurt_cobain
 • 9,390 points • 46,299 views
0 votes
1 answer

After installing Hadoop on Windows7, NameNode failed to start

May 3, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 6,778 views
0 votes
1 answer

Hadoop giving java.io.IOException, in mkdir Java code.

May 3, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,305 views
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