Recent questions tagged big-data

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Access HFile without using Hbase

Aug 9, 2018 in Database by Data_Nerd
 • 2,390 points • 556 views
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Thrift in Hbase

Aug 9, 2018 in Database by shams
 • 3,670 points • 681 views
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When a reduce class also serve as a combiner?

Aug 9, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 521 views
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Storing collection of images in HDFS

Aug 9, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 998 views
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Operation to simulate a Hadoop Production Cluster

Aug 9, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 660 views
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Determining how many mappers will run?

Aug 9, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 2,287 views
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Example or Use Case of Big Data

Aug 8, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 702 views
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How to assess and compare Hadoop for Business Intelligence?

Aug 8, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 433 views
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How to run Map Reduce program using Ubuntu terminal?

Aug 7, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 3,683 views
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I get an error stating- Hadoop: «ERROR : JAVA_HOME is not set». How to resolve this?

Aug 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 5,286 views
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How should I connect Hadoop in C#?

Aug 7, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,666 views
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2 answers

How does Hadoop/Spark is used for building large analytics report?

Aug 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 606 views
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Increasing HFile block size

Aug 6, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 717 views
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Designing Schema in HBase

Aug 6, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 630 views
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What are the security guidelines for Impala?

Aug 6, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 537 views
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1 answer

Cloudera Managing and Compatibality

Aug 6, 2018 in Big Data Hadoop by shams
 • 3,670 points • 388 views
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1 answer

What are the different ways of Installing Hadoop into our local machine?

Aug 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 4,726 views
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Which is the most preferable language for Hadooop Map-Reduce programs?

Aug 4, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 3,323 views
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Is there any way to make Apache Commons Math Library available to MapReducer job at runtime?

Aug 3, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 964 views
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Reading the file and populating the associative array

Aug 2, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 951 views
0 votes
1 answer

What happens in a MapReduce job when you set the number of reducers to one?

Jul 31, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,855 views
0 votes
1 answer

HDFS for customer information file

Jul 31, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 448 views
0 votes
1 answer

How a client reads a file from HDFS?

Jul 31, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,361 views
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1 answer

Mappers in Hadoop

Jul 31, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 343 views
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1 answer

Backup and Checkpoint Node

Jul 31, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 2,599 views
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1 answer

Checkpoint Node in Hadoop

Jul 31, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,193 views
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1 answer

Block Scanner HDFS

Jul 31, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 2,235 views
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1 answer

Filters in HBase

Jul 31, 2018 in Database by Data_Nerd
 • 2,390 points • 6,496 views
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1 answer

Compaction HBase

Jul 31, 2018 in Database by Data_Nerd
 • 2,390 points • 478 views
0 votes
1 answer

Passing keys and values to the reducers during a standard sort and shuffle phase of MapReduce

Jul 27, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 2,176 views
0 votes
1 answer

Hortonworks vs Cloudera Architecture Difference

Jul 27, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 685 views
0 votes
1 answer

How to create a project for the first time in Hadoop.?

Jul 27, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 965 views
0 votes
1 answer

When do reduce tasks start in Hadoop?

Jul 27, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 834 views
0 votes
1 answer

What makes Spark faster than MapReduce?

Jul 27, 2018 in Apache Spark by Neha
 • 6,300 points • 1,245 views
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1 answer

How compression works in Hadoop?

Jul 27, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,819 views
+1 vote
1 answer

Reading Performance in Hadoop Cluster

Jul 25, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 547 views
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1 answer

GROUP and COGROUP in PIG

Jul 25, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 3,753 views
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1 answer

Use of MapReduce in PIG

Jul 25, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,994 views
0 votes
1 answer

Difference between a failed task attempt and a killed task attempt

Jul 24, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 2,882 views
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1 answer

Delete row in HBase

Jul 24, 2018 in Database by Data_Nerd
 • 2,390 points • 1,599 views
0 votes
1 answer

Key Components of HBase

Jul 24, 2018 in Database by shams
 • 3,670 points • 1,389 views
0 votes
1 answer

What metadata is stored on a DataNode when a block is written to it?

Jul 23, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 2,786 views
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Importing a portion of Relational Database to HDFS

Jul 20, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 1,600 views
0 votes
1 answer

How can Hadoop discover missing or corrupt HDFS data?

Jul 19, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,295 views
0 votes
1 answer

How the FIFO Scheduler arbitrates the cluster resources for a job and its tasks?

Jul 19, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 851 views
0 votes
1 answer

Synchronizing sqoop imported data in HDFS

Jul 19, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,011 views
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1 answer

Sqoop Metastore ?

Jul 19, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,152 views
+1 vote
1 answer

When I try to execute any Hadoop commands error pops up saying unable to find or load main class M

Jul 17, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,662 views
0 votes
1 answer

Data model operations in Hbase

Jul 16, 2018 in Database by shams
 • 3,670 points • 614 views
0 votes
1 answer

HLog and WAL in Hbase.

Jul 16, 2018 in Database by shams
 • 3,670 points • 3,628 views
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