Questions by kurt_cobain

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1 answer

Is there any way to setup Hadoop nodes (data nodes/namenodes) to use multiple volumes/disks?

Jun 20, 2018 in Big Data Hadoop • 786 views
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1 answer

How RDD persist the data in Spark?

Jun 18, 2018 in Apache Spark • 1,203 views
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1 answer

What do we mean by an RDD in Spark?

Jun 18, 2018 in Apache Spark • 3,830 views
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1 answer

Is it mandatory to start Hadoop to run spark application?

Jun 14, 2018 in Apache Spark • 697 views
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8 answers

How to replace null values in Spark DataFrame?

May 31, 2018 in Apache Spark • 74,334 views
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1 answer

Akka in Spark

May 31, 2018 in Apache Spark • 1,932 views
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1 answer

Is there any way to uncache RDD?

May 30, 2018 in Apache Spark • 1,510 views
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1 answer

How to find max value in pair RDD?

May 26, 2018 in Apache Spark • 7,690 views
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1 answer

What's the difference between 'filter' and 'where' in Spark SQL?

May 23, 2018 in Apache Spark • 33,875 views
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1 answer

When is the reduce tasks start in Hadoop?

May 22, 2018 in Big Data Hadoop • 3,418 views
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1 answer

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

May 21, 2018 in Big Data Hadoop • 2,367 views
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1 answer

Sqoop vs Oracle Hadoop Connectors

May 18, 2018 in Big Data Hadoop • 743 views
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1 answer

How to install Hadoop in Ubuntu?

May 17, 2018 in Big Data Hadoop • 474 views
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1 answer

Visualization Tool in Cloudera CDH

May 16, 2018 in Big Data Hadoop • 1,070 views
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1 answer

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

May 10, 2018 in Big Data Hadoop • 1,993 views
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1 answer

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

May 9, 2018 in Big Data Hadoop • 7,861 views
+1 vote
1 answer

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

May 8, 2018 in Big Data Hadoop • 11,338 views
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1 answer

Can we use HDFS to store git repositories?

May 7, 2018 in Big Data Hadoop • 1,214 views
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9 answers

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

May 4, 2018 in Big Data Hadoop • 45,506 views
+1 vote
12 answers

How to check size of HDFS directory?

May 3, 2018 in Big Data Hadoop • 46,207 views
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1 answer

How to extract only few lines of data from HDFS?

May 2, 2018 in Big Data Hadoop • 10,858 views
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1 answer

Can we use apache Mahout without Hadoop dependency?

Apr 26, 2018 in Big Data Hadoop • 793 views
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1 answer

HortonWorks Hadoop encryption tools and data security

Apr 20, 2018 in Big Data Hadoop • 869 views
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1 answer

How to find Hadoop version in CDH?

Apr 19, 2018 in Big Data Hadoop • 8,420 views
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1 answer

Changing Column position in spark dataframe

Apr 19, 2018 in Apache Spark • 13,295 views
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1 answer

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

Apr 17, 2018 in Big Data Hadoop • 7,586 views
+1 vote
1 answer

http://localhost:50070 not working in HADOOP

Apr 16, 2018 in Big Data Hadoop • 39,087 views
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1 answer

How do I connect my Spark based HDInsight cluster to my blob storage?

Apr 15, 2018 in Big Data Hadoop • 1,946 views
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1 answer

How can we transfer a PDF file to HDFS?

Apr 13, 2018 in Big Data Hadoop • 871 views
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1 answer

Is there any way to increase Java Heap size in Hadoop?

Apr 12, 2018 in Big Data Hadoop • 4,583 views
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12 answers

What is Zookeeper? What is the purpose of Zookeeper in Hadoop Ecosystem?

Apr 12, 2018 in Big Data Hadoop • 28,548 views
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1 answer

Difference between Application Master and Application Manager?

Apr 10, 2018 in Big Data Hadoop • 13,937 views
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1 answer

What are the hardware requirements for installing Hadoop on my Laptop?

Apr 10, 2018 in Big Data Hadoop • 7,641 views
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5 answers

What is the HDFS command to list all the files in HDFS according to the timestamp?

Apr 10, 2018 in Big Data Hadoop • 71,303 views
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2 answers

Difference between Action and Actions in Selenium

Apr 9, 2018 in Selenium • 51,303 views
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1 answer

What does Context mean in Hadoop MapR terms ?

Apr 6, 2018 in Big Data Hadoop • 1,423 views
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1 answer

which one to choose for log analysis?

Apr 6, 2018 in Big Data Hadoop • 558 views
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1 answer

Avro - Getting Started

Apr 4, 2018 in Big Data Hadoop • 488 views
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1 answer

When is an identity mapper/reducer used?

Apr 3, 2018 in Big Data Hadoop • 2,008 views
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1 answer

Maven pom.xml file issue USING SELEINUM WebDriver using Firfox

Apr 3, 2018 in Selenium • 1,366 views
+1 vote
1 answer

Is it necessary to use Zookeeper in Hadoop Stack?

Mar 27, 2018 in Big Data Hadoop • 635 views
+1 vote
2 answers

Finding number of missing values and removing those missing values from a data-frame

Mar 27, 2018 in Data Analytics • 880 views
+1 vote
2 answers

Custom Function to replace missing values in a vector with the mean of values

Mar 27, 2018 in Data Analytics • 1,667 views
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1 answer

Plotting multiple graphs on the same page in R

Mar 27, 2018 in Data Analytics • 1,214 views
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1 answer

Left Join and Right Join using "dplyr"

Mar 27, 2018 in Data Analytics • 871 views
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1 answer

Using "dplyr" to summarise multiple columns

Mar 27, 2018 in Data Analytics • 1,489 views
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1 answer

Types of Hadoop Clusters

Mar 26, 2018 in Big Data Hadoop • 3,596 views
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1 answer

Which latest Hadoop version is stable?

Mar 26, 2018 in Big Data Hadoop • 4,964 views
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1 answer

Relationship between Spark, Hadoop and Cassandra?

Mar 26, 2018 in Big Data Hadoop • 2,040 views
+1 vote
1 answer

Cassandra and Hadoop - realtime vs batch

Mar 26, 2018 in Big Data Hadoop • 1,516 views
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