Recent questions tagged big-data

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How to upgrade from Hadoop 1.2 to Hadoop 2.2?

Nov 21, 2018 in Big Data Hadoop by digger
 • 26,740 points • 601 views
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1 answer

How to convert Spark data into CSV?

Nov 21, 2018 in Big Data Hadoop by digger
 • 26,740 points • 4,493 views
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What is the hdfs command to check free space available?

Nov 21, 2018 in Big Data Hadoop by digger
 • 26,740 points • 3,753 views
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What is SerDe in Hadoop Hive?

Nov 21, 2018 in Big Data Hadoop by Haman
 • 650 points • 5,707 views
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1 answer

What is the meaning of Write Ahead Log in Hadoop?

Nov 21, 2018 in Big Data Hadoop by Haman
 • 650 points • 2,137 views
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Hadoop: What does RDD mean?

Nov 21, 2018 in Big Data Hadoop by Haman
 • 650 points • 1,102 views
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What is the difference between Apache ZooKeeper and Apache Oozie?

Nov 21, 2018 in Big Data Hadoop by Haman
 • 650 points • 4,515 views
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Hadoop: How to get the column name along with the output in Hive?

Nov 21, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 4,892 views
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1 answer

Hadoop: Java code to get Hive table properties.

Nov 21, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 921 views
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Hadoop Java: org.apache.hadoop.conf.Configuration does not exist error

Nov 21, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 7,544 views
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1 answer

In Hadoop MapReduce, how can i set an Object as the Value for Map output?

Nov 21, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 978 views
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Hadoop HDFS: Exception in createBlockOutputStream

Nov 21, 2018 in Big Data Hadoop by digger
 • 26,740 points • 5,045 views
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How to open/stream .zip files through Spark?

Nov 20, 2018 in Apache Spark by Neha
 • 6,300 points • 2,490 views
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1 answer

Hadoop: "Caused by: java.lang.ClassNotFoundException" error

Nov 19, 2018 in Big Data Hadoop by digger
 • 26,740 points • 7,010 views
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Hadoop hdfs: How to count number of lines?

Nov 19, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,197 views
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Hadoop: Adding multiple inputs with a different mapper using python

Nov 19, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,568 views
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1 answer

Hadoop HDFS: Java API to move files to hdfs

Nov 19, 2018 in Big Data Hadoop by digger
 • 26,740 points • 4,124 views
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Big Data Architect career as a fresher

Nov 19, 2018 in Career Counselling by Ram
 • 850 points • 1,633 views
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3 answers

Big Data Architect Certifications/ Courses

Nov 19, 2018 in Career Counselling by Ram
 • 850 points • 1,080 views
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What does a Big Data Architect do?

Nov 19, 2018 in Career Counselling by Ram
 • 850 points • 932 views
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2 answers

What are skills required to become a Big Data Architect?

Nov 19, 2018 in Career Counselling by Ram
 • 850 points • 1,121 views
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2 answers

Big Data Solution Architect Salary

Nov 19, 2018 in Career Counselling by Ram
 • 850 points • 948 views
0 votes
2 answers

What are the skills required to become a Chief Data Officer?

Nov 16, 2018 in Career Counselling by Kapoor
 • 1,070 points • 1,948 views
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2 answers

Role of Chief Data Officer in Big Data

Nov 16, 2018 in Career Counselling by Kapoor
 • 1,070 points • 760 views
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3 answers

What is the average Salary of Chief Data Officer?

Nov 16, 2018 in Career Counselling by Kapoor
 • 1,070 points • 2,062 views
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1 answer

how do I run this R program on hadoop.

Nov 16, 2018 in Data Analytics by Ali
 • 11,360 points • 1,029 views
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1 answer

how is apache sqoop different from flume? Can someone explain?

Nov 15, 2018 in Big Data Hadoop by vishal
 • 430 points • 482 views
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4 answers

Data Science Certifications

Nov 15, 2018 in Career Counselling by Max
 • 180 points • 757 views
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2 answers

What is the average Salary for Data Scientist?

Nov 15, 2018 in Career Counselling by Max
 • 180 points • 982 views
0 votes
2 answers

Data Scientist Skills

Nov 15, 2018 in Career Counselling by Max
 • 180 points • 1,036 views
0 votes
5 answers

What are the roles and responsibilities of a Data Scientist?

Nov 15, 2018 in Career Counselling by Max
 • 180 points • 2,962 views
+2 votes
1 answer

Hadoop: Type mismatch in key from map: expected org.apache.hadoop.io.Text, recieved org.apache.hadoop.io.LongWritable

Nov 15, 2018 in Big Data Hadoop by digger
 • 26,740 points • 6,562 views
0 votes
1 answer

Hadoop Hive Hbase: How to insert data into Hbase using Hive (JSON file)?

Nov 15, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,935 views
0 votes
1 answer

Hadoop HDFS: How to delete old files from HDFS?

Nov 15, 2018 in Big Data Hadoop by digger
 • 26,740 points • 14,144 views
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1 answer

Hadoop Spark: __spark_lib.zip does not exist

Nov 15, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,751 views
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1 answer

Hadoop Hive: recursively descending into subdirectories without partitions or editing hive-site.xml

Nov 15, 2018 in Big Data Hadoop by digger
 • 26,740 points • 5,529 views
0 votes
3 answers

Data Warehousing Tools

Nov 14, 2018 in Career Counselling by Vidhyut
 • 1,170 points • 821 views
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2 answers

Data Warehouse Management Certification

Nov 14, 2018 in Career Counselling by Vidhyut
 • 1,170 points • 850 views
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2 answers

Data Warehouse Manager Salary

Nov 14, 2018 in Career Counselling by Vidhyut
 • 1,170 points • 630 views
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2 answers

Skills required to become Data Warehouse Manager

Nov 14, 2018 in Career Counselling by Vidhyut
 • 1,170 points • 1,234 views
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2 answers

Responsibilities of Data Warehouse Manager

Nov 14, 2018 in Career Counselling by Vidhyut
 • 1,170 points • 3,796 views
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1 answer

Hadoop Hive: How to drop a table?

Nov 14, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 2,005 views
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1 answer

Hadoop Hive: How to split a single row into multiple rows?

Nov 14, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 9,357 views
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1 answer

Hadoop Hive: How to convert multiple rows into comma separated values?

Nov 14, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 5,427 views
0 votes
1 answer

Hadoop: RHadoop: packages ‘rmr’, ‘rJava‘, ‘RJSONIO‘, ‘rhdfs’, ‘rhbase’, ‘plyrmr’ are not available

Nov 14, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,073 views
0 votes
2 answers

Certifications for Data Analyst job

Nov 13, 2018 in Career Counselling by Haman
 • 650 points • 1,012 views
+1 vote
3 answers

Data Analyst job for fresher

Nov 13, 2018 in Career Counselling by Haman
 • 650 points • 1,293 views
0 votes
2 answers

Data Analyst Salary

Nov 13, 2018 in Career Counselling by Haman
 • 650 points • 825 views
0 votes
3 answers

What are the skills required to become Data Analyst?

Nov 13, 2018 in Career Counselling by Haman
 • 650 points • 1,366 views
0 votes
3 answers

What are the responsibilities of Data Analyst?

Nov 13, 2018 in Career Counselling by Haman
 • 650 points • 1,712 views
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