Recent questions tagged big-data

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1 answer

How do I connect to a HIVE Meta store through a program in SparkSQL?

Sep 5, 2019 in Apache Spark by nitinrawat895
 • 11,380 points • 5,572 views
0 votes
1 answer

How to call MapReduce program using a simple Java Program?

Sep 4, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,589 views
+1 vote
1 answer

sql exception when exporting

Sep 4, 2019 in Big Data Hadoop by Hemanth
 • 250 points • 4,747 views
+1 vote
1 answer

What are all the Data quality checks we do in our real time Big Data projects.

Sep 4, 2019 in Big Data Hadoop by Madhan
 • 130 points • 3,231 views
+1 vote
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i tried to run hdfs namenode -format but i got this instead, -classpath and D:\Hadoop isn't recognized. Anyone can help? Thank you.

Sep 3, 2019 in Big Data Hadoop by Fuad
 • 2,946 views
0 votes
1 answer

which one is better bigdata or devops for career

Aug 26, 2019 in Big Data Hadoop by SS
 • 3,650 views
+1 vote
1 answer

How to convert JSON file to AVRO file and vise versa

Aug 24, 2019 in Apache Spark by Prashant
 • 4,733 views
+1 vote
1 answer

How to extract record from one RDD using another RDD

Aug 23, 2019 in Apache Spark by anonymous
 • 3,567 views
0 votes
0 answers

HIve query data dates issue

Aug 22, 2019 in Big Data Hadoop by anonymous
 • 2,638 views
0 votes
0 answers

How to replicate task so that a task will be computed by two mappers? Or each task will be done twice.

Aug 21, 2019 in Big Data Hadoop by dodo aly
 • 1,254 views
+2 votes
1 answer

Type mismatch error in scala

Aug 16, 2019 in Apache Spark by anonymous
 • 14,765 views
+1 vote
0 answers

Output of dump command has empty records

Aug 10, 2019 in Big Data Hadoop by Manju Bhargavi
 • 1,939 views
0 votes
1 answer

Sqoop - moving data from DB2 to HDFS ( hive partition table)

Aug 9, 2019 in Big Data Hadoop by Tina
 • 5,740 views
0 votes
1 answer

Exception in thread "main" java.lang.NoClassDefFoundError

Aug 9, 2019 in Big Data Hadoop by Reshma
 • 3,802 views
+1 vote
2 answers

Spark: Can we add column to dataframe?

Aug 9, 2019 in Apache Spark by Chirag
 • 6,031 views
0 votes
1 answer

Unable to find Java and eclipse installation on my webconsole.

Aug 9, 2019 in Big Data Hadoop by Nisha
 • 1,617 views
0 votes
1 answer

Load data into teradata using sqoop export

Aug 9, 2019 in Big Data Hadoop by Prateek
 • 5,281 views
0 votes
1 answer

Monitoring Spark application

Aug 9, 2019 in Apache Spark by Rishi
 • 2,018 views
0 votes
1 answer

Exception in thread "main" java.lang.UnsupportedClassVersionError: has been compiled by a more recent version of the Java Runtime

Aug 9, 2019 in Big Data Hadoop by Sushma
 • 2,555 views
0 votes
1 answer

When do Reduce tasks start in Hadoop?

Aug 9, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 1,699 views
0 votes
1 answer

Fastest way to load bulk data in to HBase through a program

Aug 8, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,705 views
0 votes
1 answer

Difference between Text and String in Hadoop

Aug 8, 2019 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 3,335 views
0 votes
1 answer

Hadoop: ERROR: namenode.NameNode: Could not initialize shared edits dir java.io.IOException: Cannot start an HA namenode with name dirs that need recovery.

Aug 8, 2019 in Big Data Hadoop by Ramisha
 • 2,601 views
0 votes
1 answer

Error: Hive show tables does not display table "sqooptest" , which was imported by SQOOP

Aug 7, 2019 in Big Data Hadoop by Sheena
 • 2,427 views
0 votes
1 answer

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

Aug 7, 2019 in Big Data Hadoop by Nashima
 • 2,909 views
0 votes
1 answer

Hadoop: ERROR1070: Could not resolve count using imports: [, java.lang., org.apache.pig.builtin., org.apache.pig.impl.builtin.]

Aug 7, 2019 in Big Data Hadoop by Nikitha
 • 3,740 views
0 votes
1 answer

Hadoop: Error: Exception in thread "main" java.lang.IncompatibleClassChangeError: Found interface org.apache.hadoop.mapreduce.JobContext, but class was expected

Aug 7, 2019 in Big Data Hadoop by Tanurima
 • 3,099 views
0 votes
1 answer

Hadoop:Error: Network is unreachable; Host Details : local host is: "localhost/127.0.0.1"; destination host is: "boss":32939;

Aug 7, 2019 in Big Data Hadoop by Shrinivash
 • 2,464 views
0 votes
1 answer

Hadoop: Error: Hadoop Master cannot start the Slave with different user (or) Slave with different user failed to start by Hadoop Master node.

Aug 7, 2019 in Big Data Hadoop by Karthik
 • 2,807 views
0 votes
1 answer

Hadoop: Error: slave: bash: line 0: cd: /opt/hadoop-1.1.0/libexec/..: No such file or directory

Aug 7, 2019 in Big Data Hadoop by Sunny
 • 2,956 views
0 votes
0 answers

ava.sql.SQLException: Error while processing statement:

Aug 7, 2019 in Big Data Hadoop by Hemanth
 • 250 points • 4,166 views
+1 vote
1 answer

How to read a data from text file in Spark?

Aug 6, 2019 in Apache Spark by Dipshika
 • 6,408 views
0 votes
1 answer

How to start spark history server?

Aug 6, 2019 in Apache Spark by Sunita
 • 1,761 views
0 votes
1 answer

What is Spark UI and how to monitor a spark job?

Aug 6, 2019 in Apache Spark by Dhanus
 • 4,121 views
0 votes
1 answer

How to handle data shuffle in Spark

Aug 6, 2019 in Apache Spark by Dinisha
 • 2,505 views
0 votes
1 answer

Zookeeper: client.HConnnectionManager HConbectionImplementation: Cant get connection to Zookeeper:KeeperErrorCode

Aug 6, 2019 in Big Data Hadoop by Banshee
 • 1,646 views
0 votes
1 answer

Unable to create table in Hive

Aug 6, 2019 in Big Data Hadoop by Tina
 • 1,761 views
0 votes
1 answer

Error: Zookeeper address not found from MapRFilesystem

Aug 5, 2019 in Big Data Hadoop by Risha
 • 2,574 views
+1 vote
2 answers

Error: com/eng/mr/WordCountDriver : Unsupported major.minor version 52.0

Aug 5, 2019 in Big Data Hadoop by Disha
 • 1,947 views
+1 vote
2 answers

Hadoop: Error: Exception in thread “main” java.lang.UnsupportedClassVersionError: a

Aug 5, 2019 in Big Data Hadoop by Trina
 • 3,376 views
0 votes
1 answer

How to assign server access to client(s) through NFS export file?

Aug 5, 2019 in Big Data Hadoop by Ratan
 • 1,597 views
0 votes
1 answer

Hadoop: ERROR: datanode.DataNode: java.io.IOException: Datanode state: LV = -32 CTime = 1377582559943 is newer than the namespace state: LV = -32 CTime = 0

Aug 5, 2019 in Big Data Hadoop by pavitra
 • 2,161 views
0 votes
1 answer

Hadoop: ERROR: datanode.DataNode: java.io.IOException: Incompatible namespaceIDs in /app/hadoop/tmp/dfs/data: namenode namespaceID = 1580775695; datanode namespaceID = 1494801914

Aug 5, 2019 in Big Data Hadoop by Sudarshan
 • 2,275 views
0 votes
1 answer

Hadoop: ERROR datanode.DataNode: All directories in dfs.data.dir are invalid.

Aug 5, 2019 in Big Data Hadoop by Jigar
 • 3,194 views
0 votes
1 answer

ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesystem: FSNamesystem initialization failed. java.io.FileNotFoundException: /app/hadoop/tmp/dfs/name/in_use.lock

Aug 5, 2019 in Big Data Hadoop by Rashmi
 • 3,027 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
 • 3,633 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
 • 1,777 views
+1 vote
2 answers

Hadoop Administration

Aug 4, 2019 in Big Data Hadoop by saroj
 • 150 points • 2,122 views
0 votes
1 answer

Setting up checkpoint dir: PySpark Data Science

Aug 2, 2019 in Data Analytics by Sophie may
 • 10,620 points • 7,391 views
0 votes
1 answer

Data Science: Integrating RStudio to DashDB

Aug 2, 2019 in Data Analytics by Sophie may
 • 10,620 points • 1,903 views
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