Recent questions tagged big-data

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What is SparkCore functionalities?

Jul 4, 2019 in Apache Spark by naina
 • 2,009 views
+1 vote
1 answer

Error: value textfile is not a member of org.apache.spark.SparkContext

Jul 4, 2019 in Apache Spark by amrita
 • 5,741 views
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error: identified expected but integer literal found.

Jul 4, 2019 in Apache Spark by NItin
 • 7,556 views
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How to create RDD from an external file source in scala?

Jul 4, 2019 in Apache Spark by Reena
 • 2,801 views
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How to create RDD from existing RDD in scala?

Jul 4, 2019 in Apache Spark by Nihal
 • 2,373 views
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How to create RDD from parallelized collection in scala?

Jul 3, 2019 in Apache Spark by sunny
 • 2,751 views
0 votes
1 answer

error: identifier expected but ']' found.

Jul 3, 2019 in Apache Spark by tara
 • 6,597 views
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1 answer

What is Action in Spark?

Jul 3, 2019 in Apache Spark by roza
 • 13,184 views
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1 answer

What is Map and flatMap in Spark?

Jul 3, 2019 in Apache Spark by Naina
 • 2,978 views
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1 answer

Why Partitions are immutable in Spark?

Jul 3, 2019 in Apache Spark by neha
 • 3,977 views
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How SparkSQL is different from HQL and SQL?

Jul 3, 2019 in Apache Spark by Ranjan
 • 5,074 views
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What is Piping in Spark?

Jul 3, 2019 in Apache Spark by Diana
 • 4,394 views
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What is the difference between persist() and cache() in apache spark?

Jul 3, 2019 in Apache Spark by Nihal
 • 5,602 views
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What is meant by Transformation? Give some examples.

Jul 3, 2019 in Apache Spark by deric
 • 1,694 views
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When we create an RDD, does it bring the data and load it into the memory?

Jul 3, 2019 in Apache Spark by monalisa
 • 2,005 views
+1 vote
2 answers

What is sparkContext?

Jul 3, 2019 in Apache Spark by Liza
 • 3,170 views
+1 vote
1 answer

What is reduce() action in Spark?

Jul 2, 2019 in Apache Spark by amrita
 • 6,941 views
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1 answer

What is persist() in Spark?

Jul 2, 2019 in Apache Spark by Tina
 • 1,821 views
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1 answer

What is a Parquet file in Spark?

Jul 2, 2019 in Apache Spark by Anindit
 • 2,413 views
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1 answer

What is GraphX in Spark?

Jul 2, 2019 in Big Data Hadoop by Nitin
 • 1,933 views
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1 answer

Hadoop security GroupMappingServiceProvider exception for Spark job via Dataproc API

Jul 2, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,776 views
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1 answer

ElasticSearch Hadoop Cluster

Jul 2, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,505 views
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1 answer

failed to start the Namenode format in hadoop generation 2

Jul 2, 2019 in Big Data Hadoop by saroj
 • 150 points • 4,010 views
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what are the commonly used Spark ecosystem?

Jul 2, 2019 in Big Data Hadoop by ranjan
 • 1,121 views
0 votes
1 answer

what is Hive on spark?

Jul 2, 2019 in Big Data Hadoop by Nikhil
 • 2,073 views
0 votes
1 answer

By which components spark ecosystem libraries are composed of?

Jul 1, 2019 in Apache Spark by zaved
 • 1,601 views
0 votes
1 answer

What is polyglot in spark?

Jul 1, 2019 in Apache Spark by Lisa
 • 4,023 views
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1 answer

What is RDD in Apache spark?

Jul 1, 2019 in Apache Spark by Lila
 • 2,527 views
0 votes
1 answer

Currently am working on Hadoop BigTop installation and am getting this particular error which reads, "GPG key retrieval failed: [Errno 14] problem making ssl connection"

Jul 1, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,626 views
0 votes
1 answer

How does Hadoop process data which is split across multiple boundaries in an HDFS?

Jul 1, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,977 views
0 votes
1 answer

Explain to me the installation procedures for RHadoop packages (RMR, RHDFS, RHBase).

Jun 28, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,962 views
0 votes
1 answer

Warning: Unable to load Hadoop Native Library for your platform.

Jun 28, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 7,577 views
0 votes
1 answer

How to connect Relational Database using Sqoop?

Jun 26, 2019 in Big Data Hadoop by Rajan
 • 1,843 views
0 votes
1 answer

How to load data from flat files into different partitions of Hive table?

Jun 26, 2019 in Big Data Hadoop by rakesh
 • 3,195 views
0 votes
1 answer

How to load data from flat files into Hive?

Jun 26, 2019 in Big Data Hadoop by Gandhi
 • 4,622 views
0 votes
1 answer

How to create Hive tables that can be partitioned Using HiveQL?

Jun 26, 2019 in Big Data Hadoop by avijit
 • 1,436 views
0 votes
1 answer

How to execute Pig script from HDFS?

Jun 26, 2019 in Big Data Hadoop by Richa
 • 1,988 views
0 votes
1 answer

When creating a Hive table how can you specify the table creator name in Hive?

Jun 26, 2019 in Big Data Hadoop by Nikita
 • 2,165 views
0 votes
1 answer

Command to see the indexes of a table in Hive?

Jun 26, 2019 in Big Data Hadoop by Ganesh
 • 7,526 views
0 votes
1 answer

Error: Unable to instantiate

Jun 26, 2019 in Big Data Hadoop by Danish
 • 1,539 views
0 votes
1 answer

what is the difference between CREATE TABLE and CREATE EXTERNAL TABLE in Hive?

Jun 26, 2019 in Big Data Hadoop by Tara
 • 2,655 views
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1 answer

Can I run Hadoop with Docker for both DEV and PROD environments?

Jun 26, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,512 views
0 votes
1 answer

Can I run Hadoop with Docker for both DEV and PROD environments?

Jun 26, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,608 views
0 votes
1 answer

Issue with Python Read file as stream from HDFS.

Jun 26, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 4,053 views
0 votes
1 answer

What is the significance of ‘IF EXISTS” clause while dropping a table in Hive?

Jun 26, 2019 in Big Data Hadoop by namita
 • 3,957 views
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1 answer

Which java class handles the output record encoding into files which result from Hive queries?

Jun 26, 2019 in Big Data Hadoop by Gunjan
 • 1,991 views
0 votes
1 answer

Which java class handles the Input record encoding into files which store the tables in Hive?

Jun 26, 2019 in Big Data Hadoop by disha
 • 1,823 views
0 votes
1 answer

How to check if a particular partition exists in Hive?

Jun 26, 2019 in Big Data Hadoop by ria
 • 11,182 views
0 votes
1 answer

Can hive queries be executed from script files? And how?

Jun 26, 2019 in Big Data Hadoop by rekha
 • 1,913 views
0 votes
1 answer

Can a table be renamed in hive?

Jun 26, 2019 in Big Data Hadoop by Rehna
 • 3,472 views
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