Recent questions tagged hadoop

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How Namenode handles data node failures?

Jul 11, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 6,450 views
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Bucketing vs Partitioning in HIve

Jul 9, 2018 in Big Data Hadoop by shams
 • 3,670 points • 27,263 views
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Are there any Limitations of Pig?

Jul 6, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,845 views
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MapFile in Pig

Jul 6, 2018 in Big Data Hadoop by shams
 • 3,670 points • 727 views
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Checkpointing in Hadoop

Jul 3, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,441 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 • 2,049 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 • 1,049 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 • 1,400 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 • 1,022 views
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1 answer

NameNode Status Check

Jun 18, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 2,379 views
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1 answer

What is Speculative Execution?

Jun 18, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 611 views
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1 answer

Is it mandatory to start Hadoop to run spark application?

Jun 14, 2018 in Apache Spark by kurt_cobain
 • 9,350 points • 898 views
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Different Hadoop Modes

Jun 13, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 13,175 views
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2 answers

Hadoop fs -stat command

Jun 13, 2018 in Big Data Hadoop by shams
 • 3,670 points • 11,672 views
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NameNode & DataNode memory

Jun 12, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,486 views
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1 answer

NAS and HDFS Comparison

Jun 11, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,728 views
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Replication and Calculations

Jun 11, 2018 in Big Data Hadoop by shams
 • 3,670 points • 866 views
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1 answer

JobTracker Task Scheduling

Jun 5, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 971 views
+5 votes
2 answers

Hive to HDFS transfer

Jun 5, 2018 in Big Data Hadoop by shams
 • 3,670 points • 4,067 views
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InputSplit vs HDFS Block

Jun 1, 2018 in Big Data Hadoop by shams
 • 3,670 points • 4,504 views
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Hadoop mandatory for Spark?

Jun 1, 2018 in Apache Spark by shams
 • 3,670 points • 624 views
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1 answer

Sqoop vs distCP

May 30, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,385 views
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What is Shuffle Phase?

May 30, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,806 views
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1 answer

NameNode without any data

May 29, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,368 views
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1 answer

Is it possible to run Spark and Mesos along with Hadoop?

May 29, 2018 in Apache Spark by shams
 • 3,670 points • 909 views
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1 answer

What is new in Hadoop 3?

May 28, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 553 views
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1 answer

Is it better to have one large parquet file or lots of smaller parquet files?

May 23, 2018 in Apache Spark by Shubham
 • 13,490 points • 13,880 views
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1 answer

out of Memory Error in Hadoop

May 22, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,875 views
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1 answer

When is the reduce tasks start in Hadoop?

May 22, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 3,815 views
0 votes
1 answer

Is a HDFS block sequential ?

May 21, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,718 views
0 votes
1 answer

Is there any way to pull data from Mainframe to Hadoop?

May 21, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 2,631 views
0 votes
1 answer

Sqoop vs Oracle Hadoop Connectors

May 18, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,012 views
0 votes
1 answer

Can we use Apache Mahout without Hadoop dependency?

May 17, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,143 views
0 votes
1 answer

How to install Hadoop in Ubuntu?

May 17, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 719 views
0 votes
1 answer

Hadoop combiners with aggregator functions

May 16, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 660 views
0 votes
1 answer

Visualization Tool in Cloudera CDH

May 16, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,227 views
0 votes
1 answer

How can anyone recover deleted HDFS data?

May 16, 2018 in Big Data Hadoop by code799
 • 11,071 views
0 votes
1 answer

Disabling Kerberos authentication in Hadoop

May 16, 2018 in Big Data Hadoop by code799
 • 1,922 views
0 votes
1 answer

Getting error in JAVA_HOME variable.

May 11, 2018 in Big Data Hadoop by punk100
 • 2,325 views
0 votes
1 answer

How to change the checkpointing duration in Hadoop

May 11, 2018 in Big Data Hadoop by punk100
 • 1,571 views
0 votes
1 answer

How to change the replication factor of specific directory in Hadoop?

May 11, 2018 in Big Data Hadoop by vardy_hero
 • 3,770 views
0 votes
1 answer

Hadoop Command to merge edit logs with fsimage

May 11, 2018 in Big Data Hadoop by us0101
 • 2,150 views
0 votes
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Is there any way to include a python package with Hadoop streaming job?

May 10, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 2,289 views
0 votes
10 answers

Difference between single node & pseudo-distributed mode in Hadoop?

May 10, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 19,437 views
0 votes
1 answer

Sqoop version compatible with Hadoop 0.20?

May 9, 2018 in Big Data Hadoop by hack01
 • 1,061 views
0 votes
1 answer

Java MapReduce error saying No FileSystem for scheme:hdfs

May 9, 2018 in Big Data Hadoop by nitinrawat895
 • 11,380 points • 2,841 views
0 votes
1 answer

“no such file or directory" in case of hadoop fs -ls

May 9, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 8,429 views
0 votes
1 answer

Is there any way to access Hadoop web UI in linux?

May 9, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 4,379 views
0 votes
2 answers

Difference between HDFS and NFS

May 8, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 15,217 views
+1 vote
1 answer

How can we list files in HDFS directory as per timestamp?

May 8, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 12,223 views
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