Recent questions tagged big-data

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1 answer

NameNode & DataNode memory

Jun 12, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,748 views
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1 answer

NAS and HDFS Comparison

Jun 11, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,967 views
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1 answer

Replication and Calculations

Jun 11, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,073 views
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1 answer

JobTracker Task Scheduling

Jun 5, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,214 views
+5 votes
2 answers

Hive to HDFS transfer

Jun 5, 2018 in Big Data Hadoop by shams
 • 3,670 points • 4,407 views
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1 answer

InputSplit vs HDFS Block

Jun 1, 2018 in Big Data Hadoop by shams
 • 3,670 points • 4,801 views
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1 answer

Hadoop mandatory for Spark?

Jun 1, 2018 in Apache Spark by shams
 • 3,670 points • 840 views
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1 answer

Sqoop vs distCP

May 30, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,603 views
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2 answers

What is Shuffle Phase?

May 30, 2018 in Big Data Hadoop by shams
 • 3,670 points • 2,195 views
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1 answer

NameNode without any data

May 29, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,627 views
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1 answer

Is it possible to run Spark and Mesos along with Hadoop?

May 29, 2018 in Apache Spark by shams
 • 3,670 points • 1,193 views
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1 answer

What is new in Hadoop 3?

May 28, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 772 views
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1 answer

Is it better to have one large parquet file or lots of smaller parquet files?

May 23, 2018 in Apache Spark by Shubham
 • 13,490 points • 14,164 views
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1 answer

out of Memory Error in Hadoop

May 22, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 2,131 views
0 votes
1 answer

When is the reduce tasks start in Hadoop?

May 22, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 4,138 views
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1 answer

Is a HDFS block sequential ?

May 21, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,995 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
 • 9,350 points • 2,872 views
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1 answer

Sqoop vs Oracle Hadoop Connectors

May 18, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,250 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 • 1,406 views
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1 answer

How to install Hadoop in Ubuntu?

May 17, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 953 views
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1 answer

Hadoop combiners with aggregator functions

May 16, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 880 views
0 votes
1 answer

Visualization Tool in Cloudera CDH

May 16, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,475 views
0 votes
1 answer

How can anyone recover deleted HDFS data?

May 16, 2018 in Big Data Hadoop by code799
 • 11,464 views
0 votes
1 answer

Disabling Kerberos authentication in Hadoop

May 16, 2018 in Big Data Hadoop by code799
 • 2,252 views
0 votes
1 answer

Getting error in JAVA_HOME variable.

May 11, 2018 in Big Data Hadoop by punk100
 • 2,580 views
0 votes
1 answer

How to change the checkpointing duration in Hadoop

May 11, 2018 in Big Data Hadoop by punk100
 • 1,821 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
 • 4,066 views
0 votes
1 answer

Hadoop Command to merge edit logs with fsimage

May 11, 2018 in Big Data Hadoop by us0101
 • 2,429 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
 • 9,350 points • 2,531 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 • 20,221 views
0 votes
1 answer

Sqoop version compatible with Hadoop 0.20?

May 9, 2018 in Big Data Hadoop by hack01
 • 1,327 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 • 3,151 views
0 votes
1 answer

“no such file or directory" in case of hadoop fs -ls

May 9, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 8,856 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
 • 2,090 points • 4,888 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
 • 9,350 points • 12,729 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
 • 2,662 views
0 votes
1 answer

Cannot connect to Hive from MicroStrategy BI tool

May 8, 2018 in Big Data Hadoop by mac113
 • 1,590 views
0 votes
1 answer

Where does HDFS stores data on the local file system?

May 8, 2018 in Big Data Hadoop by code799
 • 17,461 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 • 2,822 views
0 votes
1 answer

ApplicationMaster in YARN Architecture

May 8, 2018 in Big Data Hadoop by Atul
 • 10,240 points • 1,578 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 • 1,497 views
0 votes
1 answer

Can we use HDFS to store git repositories?

May 7, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,714 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 • 22,347 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 • 2,166 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 • 1,777 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
 • 9,350 points • 48,113 views
0 votes
1 answer

How to find the used cache in HDFS

May 4, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 2,927 views
0 votes
1 answer

What happend while formatting hadoop namenode?

May 4, 2018 in Big Data Hadoop by Atul
 • 10,240 points • 923 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 • 1,863 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 • 868 views
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