Recent questions tagged big-data

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Does map/reduce merge output files after reduce phase?

Sep 25, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,054 views
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How to configure Hosts file for Hadoop Eco-System?

Sep 25, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,602 views
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In Hadoop what does dfs replicate mean?

Sep 25, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,458 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 • 1,697 views
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Hadoop: intervals and JOIN

Sep 24, 2018 in Big Data Hadoop by digger
 • 26,740 points • 877 views
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How to create smaller table from big table in HIVE?

Sep 24, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,993 views
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What is Dumbo MapReduce in Hadoop?

Sep 23, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,242 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 • 2,853 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 • 1,007 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 • 11,676 views
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How to Query hdfs with Spark Sql

Sep 20, 2018 in Blockchain by digger
 • 26,740 points • 2,348 views
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Hadoop Java Error: java.lang.NoClassDefFoundError: WordCount (wrong name: org/myorg/WordCount)

Sep 19, 2018 in Big Data Hadoop by digger
 • 26,740 points • 6,521 views
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How to execute python script in hadoop file system (hdfs)?

Sep 19, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 13,959 views
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How does the HDFS architecture provide redundancy?

Sep 19, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,231 views
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How to discover missing or corrupt HDFS data?

Sep 19, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 2,045 views
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How does Avro schema evolution work?

Sep 19, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 8,467 views
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What is Modeling data in Hadoop and how to do it?

Sep 19, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,032 views
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Where are Hadoop's task log files stored?

Sep 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,279 views
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How to access different directories in a Hadoop cluster?

Sep 18, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 1,005 views
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What additional capability does Ganglia provide to monitor Hadoop?

Sep 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,160 views
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How to achieve maximum memory to disk I/O ratio?

Sep 18, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 939 views
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How to install Sqoop with Hadoop 2.2.0?

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,218 views
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Hadoop fs mkdir and testing existence FileSystem.exists

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 3,592 views
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How to choose between Cassandra, Membase, Hadoop, MongoDB and RDBMS?

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,041 views
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submitJob method in JobClient of Hadoop throws null pointer

Sep 18, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 991 views
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What is Custom partitioner in Hadoop? How to write partition function ?

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,812 views
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Logical and Physical Plan : PIG Script

Sep 12, 2018 in Database by shams
 • 3,670 points • 3,742 views
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Debugging tools: PIG

Sep 12, 2018 in Database by shams
 • 3,670 points • 1,608 views
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What is the difference between Hadoop MapReduce and built-in MapReduce?

Sep 11, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,951 views
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Hadoop Documentation for Eclipse.

Sep 11, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,163 views
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How should I provide a URL for hdfs file system?

Sep 10, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 3,826 views
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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 • 16,556 views
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What are the basic concepts for video data structure and processing?

Sep 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 786 views
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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 • 868 views
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Understanding Hadoop Master Node, Slave Node and Data Node.

Sep 6, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,899 views
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What is Network Topology in Hadoop?

Sep 6, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,331 views
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Clarification of some Hadoop Concepts.

Sep 5, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 665 views
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How to format the output being written by MapReduce in Hadoop?

Sep 5, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,896 views
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How to access Hadoop Data using REST service?

Sep 5, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,762 views
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Will hadoop(sqoop) load oracle faster than SQL loader?

Sep 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,072 views
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Which Operating system is more preferable for data node?

Sep 4, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 902 views
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Which Windows client is used for Cloudera Hadoop Cluster?

Sep 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,098 views
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Which is the Real Time Monitoring tool/API for Hadoop?

Sep 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,467 views
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What is the best functional language to do Hadoop Map-Reduce?

Sep 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,105 views
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What is the Data format and database choices in Hadoop and Spark?

Sep 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,210 views
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2 answers

Not able to run Hive queries.

Aug 30, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,880 views
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Hadoop Pipe: shared libraries, No such file or directory error

Aug 30, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,256 views
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1 answer

Hive with JSON: getting EOF exception while querying

Aug 30, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 2,111 views
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1 answer

Hbase REST API: Timerange scan

Aug 30, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 2,082 views
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1 answer

different schedulers in Hadoop

Aug 28, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,638 views
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