Trending questions in Big Data Hadoop

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Directory not found while using java -classpath

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

3 days ago in Big Data Hadoop by shravanth
12 views
0 votes
1 answer

How to run Hadoop 2.1.0 in Windows System?

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

6 days ago in Big Data Hadoop by ravikiran
• 4,560 points
17 views
+1 vote
1 answer
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
20 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
14 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
31 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
19 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
15 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
37 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
37 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
13 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 47 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
39 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
19 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
25 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 34 views
0 votes
1 answer
0 votes
0 answers
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
74 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
26 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
32 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
33 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
28 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
20 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
58 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
53 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
22 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
25 views
0 votes
1 answer

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

Hi, You can follow the below-given solution. Just enter ...READ MORE

Aug 7 in Big Data Hadoop by Gitika
• 25,340 points

edited Aug 7 by Gitika 29 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
28 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
22 views
0 votes
1 answer
0 votes
1 answer
0 votes
0 answers

ava.sql.SQLException: Error while processing statement:

Hi everyone, I am facing one issue ...READ MORE

Aug 7 in Big Data Hadoop by Hemanth
• 170 points

edited Aug 7 by Omkar 46 views
+1 vote
2 answers

Hadoop Administration

Make the following changes to your configuration ...READ MORE

Aug 5 in Big Data Hadoop by Simran
43 views
0 votes
1 answer
0 votes
1 answer

Unable to create table in Hive

It is looking like your Hadoop daemons ...READ MORE

Aug 6 in Big Data Hadoop by Yogi
20 views
0 votes
1 answer

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

Hi, Check your dfs.name.dir and dfs.data.dir path in hdfs-site.xml. Or ...READ MORE

Aug 5 in Big Data Hadoop by Gitika
• 25,340 points
27 views
0 votes
1 answer

Error: Zookeeper address not found from MapRFilesystem

Hey, Yarn is configured with the "zero-configuration failover". So ...READ MORE

Aug 5 in Big Data Hadoop by Gitika
• 25,340 points
17 views
0 votes
1 answer

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

Hi, You can create the export folder, you will ...READ MORE

Aug 5 in Big Data Hadoop by Gitika
• 25,340 points
18 views
0 votes
1 answer

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

Hi, Try this, first delete all contents from ...READ MORE

Aug 5 in Big Data Hadoop by Gitika
• 25,340 points
20 views