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

6 days ago in Big Data Hadoop by Thayanban
• 120 points
15 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
51 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
118 views
0 votes
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 53 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 78 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
13,354 views
0 votes
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
71 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
115 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
110 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
64 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
39 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
33 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
30 views
+1 vote
1 answer
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
40 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
108 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
27 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
80 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
81 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
33 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
30 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
53 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
36 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 150 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
90 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
16,601 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
39 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
36 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 49 views
0 votes
1 answer
0 votes
0 answers
+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
710 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
229 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
136 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
63 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
41 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
499 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
35 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
85 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
39 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
107 views
0 votes
1 answer
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
45 views
0 votes
1 answer

What is the difference between S3n, S3a, and S3?

Your doubt is quite an interesting one. Yes, ...READ MORE

Jul 30 in Big Data Hadoop by ravikiran
• 4,560 points
417 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
• 25,360 points
59 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
• 25,360 points
50 views