Recent questions tagged hadoop

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How to write a file in HDFS using Java Programming language?

Sep 28, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 3,575 views
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When I try to connect to Hadoop, I get a error as -"Connecting to Resource Manager failed".

Sep 28, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,943 views
+3 votes
5 answers

Hadoop DistributedCache is deprecated - what is the preferred API?

Sep 27, 2018 in Big Data Hadoop by digger
 • 26,740 points • 3,475 views
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1 answer

Permission denied at hdfs

Sep 27, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 3,114 views
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Is Hadoop a good open-source project to join?

Sep 27, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,490 views
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Where can I find older versions of Hadoop?

Sep 27, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,304 views
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How to exit name node from safe mode?

Sep 26, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,609 views
0 votes
1 answer

How to write a file in hdfs with Java?

Sep 26, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 5,062 views
0 votes
1 answer

Spark - load CSV file as DataFrame?

Sep 25, 2018 in Big Data Hadoop by digger
 • 26,740 points • 7,358 views
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1 answer

Does map/reduce merge output files after reduce phase?

Sep 25, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,342 views
0 votes
1 answer

How to configure Hosts file for Hadoop Eco-System?

Sep 25, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 5,079 views
0 votes
1 answer

In Hadoop what does dfs replicate mean?

Sep 25, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,821 views
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How to pass large records to map/reduce tasks?

Sep 25, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,107 views
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Integration of Hadoop with Mongo DB concept

Sep 25, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,317 views
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1 answer

Hadoop: intervals and JOIN

Sep 24, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,278 views
0 votes
1 answer

How to create smaller table from big table in HIVE?

Sep 24, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 2,359 views
0 votes
1 answer

What is Dumbo MapReduce in Hadoop?

Sep 23, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,566 views
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What is the standard way to create files in your hdfs file-system?

Sep 23, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 3,241 views
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Why Hadoop is not implemented using Message Passing Interface (MPI)?

Sep 21, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,373 views
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How to add user in supergroup of hdfs in linux?

Sep 21, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 12,073 views
0 votes
1 answer

How to Query hdfs with Spark Sql

Sep 20, 2018 in Blockchain by digger
 • 26,740 points • 2,639 views
0 votes
1 answer

Hadoop Java Error: java.lang.NoClassDefFoundError: WordCount (wrong name: org/myorg/WordCount)

Sep 19, 2018 in Big Data Hadoop by digger
 • 26,740 points • 6,937 views
0 votes
1 answer

How to execute python script in hadoop file system (hdfs)?

Sep 19, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 14,438 views
0 votes
1 answer

How does the HDFS architecture provide redundancy?

Sep 19, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,538 views
0 votes
1 answer

How to discover missing or corrupt HDFS data?

Sep 19, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 2,402 views
0 votes
1 answer

How does Avro schema evolution work?

Sep 19, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 8,825 views
0 votes
1 answer

What is Modeling data in Hadoop and how to do it?

Sep 19, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,419 views
0 votes
1 answer

Where are Hadoop's task log files stored?

Sep 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,689 views
0 votes
1 answer

How to access different directories in a Hadoop cluster?

Sep 18, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 1,357 views
0 votes
1 answer

What additional capability does Ganglia provide to monitor Hadoop?

Sep 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,462 views
0 votes
1 answer

How to achieve maximum memory to disk I/O ratio?

Sep 18, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 1,244 views
0 votes
1 answer

How to install Sqoop with Hadoop 2.2.0?

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,521 views
0 votes
1 answer

Hadoop fs mkdir and testing existence FileSystem.exists

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 3,961 views
0 votes
1 answer

How to choose between Cassandra, Membase, Hadoop, MongoDB and RDBMS?

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,373 views
0 votes
2 answers

Is there a .NET equivalent to Apache Hadoop?

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,568 views
0 votes
1 answer

submitJob method in JobClient of Hadoop throws null pointer

Sep 18, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,275 views
0 votes
1 answer

What is Custom partitioner in Hadoop? How to write partition function ?

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,144 views
0 votes
1 answer

Logical and Physical Plan : PIG Script

Sep 12, 2018 in Database by shams
 • 3,670 points • 4,091 views
0 votes
1 answer

Debugging tools: PIG

Sep 12, 2018 in Database by shams
 • 3,670 points • 1,987 views
0 votes
1 answer

What is the difference between Hadoop MapReduce and built-in MapReduce?

Sep 11, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,494 views
0 votes
1 answer

Hadoop Documentation for Eclipse.

Sep 11, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,441 views
0 votes
1 answer

How should I provide a URL for hdfs file system?

Sep 10, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,243 views
0 votes
1 answer

Why am I getting error as hdfs dfs -mkdir, No such file or directory when I create a directory?

Sep 10, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 17,309 views
0 votes
1 answer

What are the basic concepts for video data structure and processing?

Sep 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,104 views
0 votes
1 answer

How to upgrade Apache Hadoop from 2.4.1 to 2.6.0?

Sep 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,160 views
0 votes
1 answer

Understanding Hadoop Master Node, Slave Node and Data Node.

Sep 6, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 3,187 views
0 votes
1 answer

What is Network Topology in Hadoop?

Sep 6, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,760 views
0 votes
1 answer

Clarification of some Hadoop Concepts.

Sep 5, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 953 views
0 votes
1 answer

How to format the output being written by MapReduce in Hadoop?

Sep 5, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 3,328 views
0 votes
1 answer

How to access Hadoop Data using REST service?

Sep 5, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 5,106 views
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