Recent questions tagged big-data

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How to exit name node from safe mode?

Sep 26, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,239 views
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How to write a file in hdfs with Java?

Sep 26, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 4,576 views
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Spark - load CSV file as DataFrame?

Sep 25, 2018 in Big Data Hadoop by digger
 • 26,740 points • 7,024 views
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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 • 1,015 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 • 4,540 views
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In Hadoop what does dfs replicate mean?

Sep 25, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,421 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 • 1,662 views
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Hadoop: intervals and JOIN

Sep 24, 2018 in Big Data Hadoop by digger
 • 26,740 points • 844 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 • 1,958 views
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What is Dumbo MapReduce in Hadoop?

Sep 23, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,206 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 • 2,817 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 • 959 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 • 11,607 views
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How to Query hdfs with Spark Sql

Sep 20, 2018 in Blockchain by digger
 • 26,740 points • 2,299 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 • 6,476 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 • 13,901 views
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How does the HDFS architecture provide redundancy?

Sep 19, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,187 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 • 2,008 views
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How does Avro schema evolution work?

Sep 19, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 8,423 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 • 1,990 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 • 1,232 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 • 971 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 • 1,131 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 • 891 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 • 1,193 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 • 3,543 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 • 1,001 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 • 951 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 • 1,778 views
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Logical and Physical Plan : PIG Script

Sep 12, 2018 in Database by shams
 • 3,670 points • 3,702 views
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Debugging tools: PIG

Sep 12, 2018 in Database by shams
 • 3,670 points • 1,555 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 • 1,906 views
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Hadoop Documentation for Eclipse.

Sep 11, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,129 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 • 3,774 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 • 16,414 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 • 757 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 • 837 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 • 2,865 views
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What is Network Topology in Hadoop?

Sep 6, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,287 views
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Clarification of some Hadoop Concepts.

Sep 5, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 624 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 • 2,845 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 • 4,723 views
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How to write examples to test whether the installation is validated or not?

Sep 5, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 937 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 • 2,036 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 • 872 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 • 1,065 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 • 1,424 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 • 1,069 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 • 1,174 views
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Not able to run Hive queries.

Aug 30, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,841 views
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