Recent questions tagged bigdata

+1 vote
1 answer

Client not able to connect to cluster

Sep 21, 2019 in Big Data Hadoop by raghavendra
 • 160 points • 849 views
0 votes
1 answer

How to run Hadoop 2.1.0 in Windows System?

Sep 11, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,061 views
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1 answer

Warning: unable to load hadoop native library

Sep 9, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,445 views
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1 answer

When do Reduce tasks start in Hadoop?

Aug 9, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 677 views
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1 answer

Error: ERROR security.UserGroupInformation: PriviledgedActionException as:root (auth:SIMPLE)

Aug 7, 2019 in Big Data Hadoop by Nashima
 • 1,646 views
0 votes
1 answer

Error: Zookeeper address not found from MapRFilesystem

Aug 5, 2019 in Big Data Hadoop by Risha
 • 1,344 views
0 votes
1 answer

Hadoop: error: Cannot lock storage /app/hadoop/tmp/dfs/name. The directory is already locked.

Aug 5, 2019 in Big Data Hadoop by Jina
 • 2,172 views
0 votes
1 answer

DJOB TRACKER : Can not start task tracker because java.lang.IllegalArgumentException: Does not contain a valid host:port authority: 127.0.0.1:9001

Aug 5, 2019 in Big Data Hadoop by Nisha
 • 728 views
0 votes
1 answer

Spark Null Pointer Exception.

Jul 19, 2019 in Apache Spark by nitinrawat895
 • 11,380 points • 6,246 views
0 votes
1 answer

What data format for large files in R?

Jul 16, 2019 in Python by ana1504.k
 • 7,910 points • 791 views
0 votes
2 answers

How to set up Map and Reduce Tasks?

Jul 12, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,182 views
0 votes
1 answer

Relationship between Hadoop and Database

Jul 4, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 579 views
0 votes
1 answer

error: identifier expected but ']' found.

Jul 3, 2019 in Apache Spark by tara
 • 5,504 views
0 votes
1 answer

Why Partitions are immutable in Spark?

Jul 3, 2019 in Apache Spark by neha
 • 1,942 views
0 votes
1 answer

What is Piping in Spark?

Jul 3, 2019 in Apache Spark by Diana
 • 3,122 views
0 votes
1 answer

What is persist() in Spark?

Jul 2, 2019 in Apache Spark by Tina
 • 705 views
0 votes
1 answer

What is a Parquet file in Spark?

Jul 2, 2019 in Apache Spark by Anindit
 • 1,300 views
0 votes
1 answer

What is GraphX in Spark?

Jul 2, 2019 in Big Data Hadoop by Nitin
 • 1,088 views
0 votes
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what are the commonly used Spark ecosystem?

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

what is Hive on spark?

Jul 2, 2019 in Big Data Hadoop by Nikhil
 • 1,171 views
0 votes
2 answers

How to execute a function in apache-scala?

Jul 1, 2019 in Apache Spark by zunaid
 • 976 views
0 votes
1 answer

How to calculate the result of formula with Scala?

Jul 1, 2019 in Apache Spark by Himanshu
 • 1,229 views
0 votes
1 answer

By which components spark ecosystem libraries are composed of?

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

What is polyglot in spark?

Jul 1, 2019 in Apache Spark by Lisa
 • 2,536 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 • 6,129 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
 • 2,843 views
0 votes
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
 • 875 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
 • 936 views
0 votes
1 answer

What are the properties that have to be mentioned in . properties in Oozie?

Jun 26, 2019 in Big Data Hadoop by Naina
 • 710 views
0 votes
0 answers

How to Execute job in oozie?

Jun 26, 2019 in Big Data Hadoop by ritam
 • 618 views
0 votes
2 answers

What is the relationship between Hadoop and Database?

Jun 25, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,293 views
0 votes
1 answer

What is the syntax for HiveQL SELECT Statement?

Jun 25, 2019 in Big Data Hadoop by Sandip
 • 555 views
0 votes
1 answer

How to check the directory is present in shell script or not?

Jun 25, 2019 in Big Data Hadoop by Mugdha
 • 641 views
0 votes
1 answer

ERROR: Stop Oozie first.

Jun 25, 2019 in Big Data Hadoop by Sumit
 • 806 views
0 votes
2 answers

E0901: Namenode [localhost:8020] not allowed, not in Oozies whitelist

Jun 24, 2019 in Big Data Hadoop by ria
 • 2,134 views
0 votes
1 answer

What Oozie CLI retries connection used for?

Jun 24, 2019 in Big Data Hadoop by Monika
 • 602 views
0 votes
2 answers

Explain to me the difference between Name Node and Secondary Name Node

Jun 21, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 4,030 views
0 votes
1 answer

What is the use of Apache Kafka in a Big Data Cluster?

Jun 21, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 905 views
0 votes
1 answer

Differentiate between FileSink and FileRollSink

Jun 20, 2019 in Big Data Hadoop by Navnit
 • 535 views
0 votes
1 answer

ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'oozie'

Jun 19, 2019 in Big Data Hadoop by Roshni
 • 13,459 views
0 votes
1 answer

Error: Tasktracker is not starting

Jun 18, 2019 in Big Data Hadoop by Jishnu
 • 648 views
0 votes
1 answer

How to submit bundle features in Oozie?

Jun 17, 2019 in Big Data Hadoop by leela
 • 636 views
0 votes
1 answer

Namenode stops automatically after a while when started Hadoop.

Jun 17, 2019 in Big Data Hadoop by Janosh
 • 982 views
0 votes
1 answer

Error: Operation not permitted, starting namenode logging to usr/local/hadoop, while starting Hadoop cluster.

Jun 17, 2019 in Big Data Hadoop by Remie
 • 1,127 views
0 votes
1 answer

Is it possible to run Apache Spark without Apache Hadoop?

Jun 17, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 918 views
0 votes
1 answer

Error: permission denied locoalhost: chown: cannot access /usr/local/hadoop/ No such file or directory

Jun 17, 2019 in Big Data Hadoop by sanju
 • 2,694 views
0 votes
0 answers

How to execute job In Oozie?

Jun 17, 2019 in Big Data Hadoop by rena
 • 469 views
0 votes
1 answer

What is fork Keyword in Oozie? How Fork and Join keyword are related t o each other in Oozie?

Jun 12, 2019 in Big Data Hadoop by Chetna
 • 2,890 views
0 votes
1 answer

What is the necessity of slave node in Oozie workflow?

Jun 12, 2019 in Big Data Hadoop by Narayan
 • 532 views
0 votes
1 answer

What start node does in Oozie?

Jun 11, 2019 in Big Data Hadoop by Govind
 • 544 views
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