Trending questions in Big Data Hadoop

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Oozie filter all coordinator jobs based on nominalTime

Hi Edureka team. I would like to ...READ MORE

2 days ago in Big Data Hadoop by Thayanban
 • 120 points • 5 views
0 votes
1 answer

how to escape delimiter in hive?

Refer to the below code used to ...READ MORE

Oct 31 in Big Data Hadoop by Kiran
 • 40 views
+1 vote
2 answers

Unable to create external table on HIVE

Hi @Ozer, This error occurred because there is ...READ MORE

Nov 6 in Big Data Hadoop by Richa
 • 108 views
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0 answers

Sqoop could not load db driver class

I am trying to connect postgres with ...READ MORE

Oct 25 in Big Data Hadoop by Ritu
 • 120 points
edited Oct 25 by Ritu • 48 views
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0 answers

Class not found exception in wordcount program in mapreduce

import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.Path; import java.io.IOException; import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; import org.apache.hadoop.mapreduce.*; import org.apache.hadoop.mapreduce.lib.input.FileInputFormat; import ...READ MORE

Oct 3 in Big Data Hadoop by Tarun
 • 120 points
edited Oct 3 by Omkar • 71 views
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0 answers

flume twitter data file not generated in HDFS

I am using Apache Hadoop on Windows ...READ MORE

Sep 26 in Big Data Hadoop by chandanarora
 • 120 points • 69 views
0 votes
1 answer

Client not able to connect to cluster

There could be multiple reasons: Make sure you ...READ MORE

Sep 23 in Big Data Hadoop by Rishi
 • 113 views
0 votes
1 answer

2 datanodes is slower ,how to get those details .what is your approach as hadoop admin

First, enable the detection of slow nodes. ...READ MORE

Sep 23 in Big Data Hadoop by Riya
 • 107 views
+10 votes
11 answers

Hadoop “Unable to load native-hadoop library for your platform” warning

modify the glibc version.CentOS provides safe softwares ...READ MORE

Sep 10, 2018 in Big Data Hadoop by bug_seeker
 • 15,350 points • 13,244 views
0 votes
2 answers

How to find the database daily refresh time / sync up time

I use this code to get the ...READ MORE

Sep 17 in Big Data Hadoop by Raman
 • 58 views
0 votes
1 answer

bash: sbin/hadoop: No such file or directory

The hadoop command is not present in ...READ MORE

Sep 18 in Big Data Hadoop by Omkar
 • 67,660 points • 36 views
0 votes
0 answers

Missing Service request

Hello All, need assistance on one issue. ...READ MORE

Sep 17 in Big Data Hadoop by Hemanth
 • 210 points • 31 views
0 votes
0 answers

Directory not found while using java -classpath

I'm using command java -classpath  ${HADOOP_CLASSPATH} -d '/home/shravanth/Desktop/wordcount/classes' ...READ MORE

Sep 14 in Big Data Hadoop by shravanth
 • 29 views
+1 vote
1 answer

" org.apache.hadoop.yarn.exceptions.YarnRuntimeException: Permissions incorrectly set for dir " problem

This error is caused when hadoop tries ...READ MORE

Sep 9 in Big Data Hadoop by Kumar
 • 92 views
0 votes
1 answer

How to run Hadoop 2.1.0 in Windows System?

Same problem but with recent Hadoop v. ...READ MORE

Sep 11 in Big Data Hadoop by ravikiran
 • 4,560 points • 37 views
0 votes
1 answer

Namenode v/s Secondary namenode

Name Node is a primary node in ...READ MORE

Sep 9 in Big Data Hadoop by ravikiran
 • 4,560 points • 105 views
0 votes
1 answer

Warning: unable to load hadoop native library

Just append word native to your HADOOP_OPTS like ...READ MORE

Sep 9 in Big Data Hadoop by ravikiran
 • 4,560 points • 26 views
0 votes
2 answers

How to use scoop in a Java Program

There is a trick which worked out ...READ MORE

Sep 4 in Big Data Hadoop by ravikiran
 • 4,560 points • 79 views
0 votes
0 answers

hdfs namenode -format not working, not showing anything.

can someone help me with this please, ...READ MORE

Sep 6 in Big Data Hadoop by nar
 • 29 views
0 votes
1 answer

sql exception when exporting

Hello @Hemanth, the error String or binary data ...READ MORE

Sep 4 in Big Data Hadoop by Ramya
 • 75 views
0 votes
1 answer

Secondary Sorting in Hadoop MapReduce

Grouping Comparator Once the data reaches a reducer, ...READ MORE

Sep 5 in Big Data Hadoop by ravikiran
 • 4,560 points • 26 views
0 votes
1 answer

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

You can use a checksum to compare ...READ MORE

Sep 4 in Big Data Hadoop by Tina
 • 51 views
0 votes
1 answer

How to call MapReduce program using a simple Java Program?

Because map and reduce run on different ...READ MORE

Sep 4 in Big Data Hadoop by ravikiran
 • 4,560 points • 35 views
+3 votes
0 answers

How to handle Sqoop failure program and restart the job from failed tables?

When running a Sqoop jobs on a ...READ MORE

Aug 29 in Big Data Hadoop by Kunal
 • 150 points
edited Sep 5 by Kunal • 148 views
0 votes
1 answer

which one is better bigdata or devops for career

I think Big Data will be good ...READ MORE

Aug 26 in Big Data Hadoop by Karan
 • 85 views
0 votes
0 answers

Cloudera Certification

Hi, I want to write CCA-175 (CCA Spark ...READ MORE

Aug 23 in Big Data Hadoop by Nagajyothi
 • 160 points • 35 views
0 votes
1 answer

I want to change the string datatype to timestamp, can anyone help me??

I am not sure if you want ...READ MORE

Aug 22 in Big Data Hadoop by Karan
 • 35 views
0 votes
0 answers

HIve query data dates issue

Hello All, I am facing one issue, my ...READ MORE

Aug 21 in Big Data Hadoop by anonymous
edited Aug 22 by Omkar • 45 views
0 votes
1 answer

whenever i trying to put the data file on hdfs then this types or error ate encountered.

Try -copyFromLocal command READ MORE

Aug 23 in Big Data Hadoop by Nagajyothi
 • 160 points • 56 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.

i want replicate task of mapper but ...READ MORE

Aug 20 in Big Data Hadoop by dodo aly
 • 24 views
0 votes
10 answers

hadoop fs -put command?

put syntax: put <localSrc> <dest> copy syntax: copyFr ...READ MORE

Dec 7, 2018 in Big Data Hadoop by Aditya
 • 16,400 views
+1 vote
1 answer

What is the best way to merge multi-part HDFS files into single file?

1. In order to merge two or ...READ MORE

Jul 29 in Big Data Hadoop by Tina
 • 664 views
0 votes
1 answer

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

sqoop import --driver com.ibm.db2.jcc.DB2Driver --connect jdbc:db2://db2.my.com:50000/databaseName --username ...READ MORE

Aug 9 in Big Data Hadoop by Payal
 • 217 views
0 votes
1 answer

Load data into teradata using sqoop export

The general syntax to do this as ...READ MORE

Aug 9 in Big Data Hadoop by Kunal
 • 129 views
0 votes
1 answer

Exception in thread "main" java.lang.NoClassDefFoundError

As far I can make out from ...READ MORE

Aug 9 in Big Data Hadoop by Arpit
 • 61 views
+1 vote
0 answers

Output of dump command has empty records

this is my input file output_pig_group_education_comma/input_load.txt and its ...READ MORE

Aug 10 in Big Data Hadoop by Manju Bhargavi
 • 39 views
0 votes
1 answer

Unable to find Java and eclipse installation on my webconsole.

You can either install java and eclipse ...READ MORE

Aug 9 in Big Data Hadoop by Isha
 • 34 views
0 votes
1 answer

When do Reduce tasks start in Hadoop?

As much I understand Reduce phase start ...READ MORE

Aug 9 in Big Data Hadoop by ravikiran
 • 4,560 points • 37 views
0 votes
1 answer

Converting CSV files to Parquet

--Create Hive external Table for existing data CREATE ...READ MORE

Jul 30 in Big Data Hadoop by Yogi
 • 470 views
0 votes
1 answer

Difference between Text and String in Hadoop

The binary representation of a Text object ...READ MORE

Aug 8 in Big Data Hadoop by ravikiran
 • 4,560 points • 82 views
+1 vote
2 answers

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

The reason for this error is because ...READ MORE

Aug 6 in Big Data Hadoop by Venkita
 • 240 points • 104 views
0 votes
1 answer

java.lang.IllegalArgumentException: Unable to instantiate SparkSession with Hive support because Hive classes are not found.

 Try using the below build.sbt, code.scala and command ...READ MORE

Jul 30 in Big Data Hadoop by Kishan
 • 452 views
0 votes
1 answer

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

I've gone through a process that is ...READ MORE

Aug 8 in Big Data Hadoop by ravikiran
 • 4,560 points • 43 views
0 votes
1 answer

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

Hi,   In this case, it is searching ...READ MORE

Aug 7 in Big Data Hadoop by Gitika
 • 25,340 points • 55 views
0 votes
1 answer

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

Hey, For me, my Hadoop NameNode was in ...READ MORE

Aug 7 in Big Data Hadoop by Gitika
 • 25,340 points • 47 views
+1 vote
2 answers

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

The reason why you get this error ...READ MORE

Aug 6 in Big Data Hadoop by Venkita
 • 240 points • 38 views
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