Recent questions tagged big-data

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What are the security guidelines for Impala?

Aug 6, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 902 views
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Cloudera Managing and Compatibality

Aug 6, 2018 in Big Data Hadoop by shams
 • 3,670 points • 542 views
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What are the different ways of Installing Hadoop into our local machine?

Aug 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 5,320 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 • 3,802 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 • 1,125 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 • 1,225 views
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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 • 2,094 views
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HDFS for customer information file

Jul 31, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 631 views
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How a client reads a file from HDFS?

Jul 31, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 2,557 views
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Mappers in Hadoop

Jul 31, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 541 views
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Backup and Checkpoint Node

Jul 31, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 3,685 views
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Checkpoint Node in Hadoop

Jul 31, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,338 views
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Block Scanner HDFS

Jul 31, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 2,493 views
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Filters in HBase

Jul 31, 2018 in Database by Data_Nerd
 • 2,390 points • 7,062 views
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Compaction HBase

Jul 31, 2018 in Database by Data_Nerd
 • 2,390 points • 639 views
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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 • 2,477 views
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Hortonworks vs Cloudera Architecture Difference

Jul 27, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 871 views
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How to create a project for the first time in Hadoop.?

Jul 27, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,200 views
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When do reduce tasks start in Hadoop?

Jul 27, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,064 views
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What makes Spark faster than MapReduce?

Jul 27, 2018 in Apache Spark by Neha
 • 6,300 points • 1,541 views
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How compression works in Hadoop?

Jul 27, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,024 views
+1 vote
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Reading Performance in Hadoop Cluster

Jul 25, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 890 views
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GROUP and COGROUP in PIG

Jul 25, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 4,215 views
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Use of MapReduce in PIG

Jul 25, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 2,316 views
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Difference between a failed task attempt and a killed task attempt

Jul 24, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 3,237 views
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Delete row in HBase

Jul 24, 2018 in Database by Data_Nerd
 • 2,390 points • 1,816 views
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1 answer

Key Components of HBase

Jul 24, 2018 in Database by shams
 • 3,670 points • 1,600 views
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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 • 3,168 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 • 1,922 views
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How can Hadoop discover missing or corrupt HDFS data?

Jul 19, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,466 views
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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 • 1,034 views
0 votes
1 answer

Synchronizing sqoop imported data in HDFS

Jul 19, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,258 views
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1 answer

Sqoop Metastore ?

Jul 19, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,331 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 • 2,056 views
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1 answer

Data model operations in Hbase

Jul 16, 2018 in Database by shams
 • 3,670 points • 921 views
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HLog and WAL in Hbase.

Jul 16, 2018 in Database by shams
 • 3,670 points • 3,960 views
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How does HDFS Federation help HDFS Scale horizontally?

Jul 12, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 1,411 views
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2 answers

How do I integrate Kdb+ and hadoop?

Jul 12, 2018 in Big Data Hadoop by shubham
 • 7,340 points • 1,773 views
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Connection in Hbase

Jul 11, 2018 in Database by shams
 • 3,670 points • 691 views
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1 answer

Standalone Mode in Hbase

Jul 11, 2018 in Database by shams
 • 3,670 points • 1,492 views
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How to avoid a “split-brain” scenario with NameNodes?

Jul 11, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 4,564 views
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How Namenode handles data node failures?

Jul 11, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 6,337 views
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Bucketing vs Partitioning in HIve

Jul 9, 2018 in Big Data Hadoop by shams
 • 3,670 points • 27,130 views
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Are there any Limitations of Pig?

Jul 6, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,771 views
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1 answer

MapFile in Pig

Jul 6, 2018 in Big Data Hadoop by shams
 • 3,670 points • 637 views
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1 answer

Checkpointing in Hadoop

Jul 3, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,339 views
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1 answer

Hadoop Nodes for Multiple Disks

Jul 3, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,984 views
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1 answer

How to analyze block placement on datanodes and rebalancing data across Hadoop nodes?

Jun 21, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,007 views
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2 answers

What is the difference between the Smart Data Access of SAP HANA and SAP HANA Vora?

Jun 21, 2018 in Big Data Hadoop by shelly
 • 120 points • 1,336 views
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Is there any way to setup Hadoop nodes (data nodes/namenodes) to use multiple volumes/disks?

Jun 20, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 981 views
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