Recent questions tagged bigdata

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How can I access S3/S3n from a local Hadoop 2.6 installation?

Oct 3, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 5,489 views
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What is Hadoop Speculative task execution?

Oct 3, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,255 views
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What is the difference between Writable & WritableComparable in Hadoop?

Oct 3, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 8,004 views
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out of Memory Error in Hadoop

Oct 1, 2018 in Big Data Hadoop by digger
 • 26,740 points • 1,791 views
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Iterate twice on values (MapReduce)

Oct 1, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 2,207 views
+2 votes
5 answers

How to transpose/pivot data in hive?

Sep 28, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 20,221 views
+3 votes
5 answers

Hadoop DistributedCache is deprecated - what is the preferred API?

Sep 27, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,454 views
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1 answer

Permission denied at hdfs

Sep 27, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 2,665 views
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Is Hadoop a good open-source project to join?

Sep 27, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,084 views
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Where can I find older versions of Hadoop?

Sep 27, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 889 views
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How to exit name node from safe mode?

Sep 26, 2018 in Big Data Hadoop by digger
 • 26,740 points • 2,094 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 • 4,395 views
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Spark - load CSV file as DataFrame?

Sep 25, 2018 in Big Data Hadoop by digger
 • 26,740 points • 6,909 views
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1 answer

ISR out of Replica

Sep 24, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 716 views
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Kafka vs Flume

Sep 24, 2018 in Big Data Hadoop by shams
 • 3,670 points • 965 views
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1 answer

Hadoop: intervals and JOIN

Sep 24, 2018 in Big Data Hadoop by digger
 • 26,740 points • 722 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 • 1,839 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 • 844 views
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How to Query hdfs with Spark Sql

Sep 20, 2018 in Blockchain by digger
 • 26,740 points • 2,181 views
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How does the HDFS architecture provide redundancy?

Sep 19, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,069 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 • 1,879 views
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1 answer

What is Modeling data in Hadoop and how to do it?

Sep 19, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,863 views
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1 answer

Where are Hadoop's task log files stored?

Sep 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,090 views
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1 answer

How to access different directories in a Hadoop cluster?

Sep 18, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 855 views
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1 answer

What additional capability does Ganglia provide to monitor Hadoop?

Sep 18, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,023 views
0 votes
1 answer

How to achieve maximum memory to disk I/O ratio?

Sep 18, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 771 views
0 votes
1 answer

Hadoop fs mkdir and testing existence FileSystem.exists

Sep 18, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 3,402 views
0 votes
1 answer

submitJob method in JobClient of Hadoop throws null pointer

Sep 18, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 842 views
0 votes
1 answer

What is the difference between Hadoop MapReduce and built-in MapReduce?

Sep 11, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,734 views
0 votes
1 answer

What are the basic concepts for video data structure and processing?

Sep 7, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 636 views
0 votes
1 answer

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 • 720 views
0 votes
1 answer

How to format the output being written by MapReduce in Hadoop?

Sep 5, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 2,706 views
0 votes
1 answer

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 • 802 views
0 votes
1 answer

Which Operating system is more preferable for data node?

Sep 4, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 761 views
0 votes
1 answer

What is the best functional language to do Hadoop Map-Reduce?

Sep 4, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 948 views
0 votes
2 answers

Not able to run Hive queries.

Aug 30, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,713 views
0 votes
1 answer

Hadoop Pipe: shared libraries, No such file or directory error

Aug 30, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,110 views
0 votes
1 answer

Hive with JSON: getting EOF exception while querying

Aug 30, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,903 views
0 votes
1 answer

Hbase REST API: Timerange scan

Aug 30, 2018 in Big Data Hadoop by Frankie
 • 9,830 points • 1,882 views
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1 answer

Buckets in HIVE

Aug 30, 2018 in Database by Ashish
 • 2,650 points • 932 views
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External and Managed Table : HIVE

Aug 30, 2018 in Database by Ashish
 • 2,650 points • 697 views
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Hcatalog in HIVE

Aug 30, 2018 in Database by Ashish
 • 2,650 points • 1,592 views
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1 answer

Common Hive Services

Aug 30, 2018 in Database by Ashish
 • 2,650 points • 1,038 views
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1 answer

different schedulers in Hadoop

Aug 28, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 1,480 views
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2 answers

Difference between Hadoop 1 and 2

Aug 28, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 20,145 views
0 votes
1 answer

Speculative Execution in Hadoop

Aug 28, 2018 in Big Data Hadoop by Ashish
 • 2,650 points • 8,734 views
0 votes
1 answer

Can we integrate Hadoop with Python?

Aug 23, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,833 views
0 votes
1 answer

What is the prerequisite for BigQuery other than SQL?

Aug 23, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,129 views
0 votes
1 answer

What is the difference between Big Data and Data Mining?

Aug 23, 2018 in Big Data Hadoop by Neha
 • 6,300 points • 1,092 views
+3 votes
4 answers

***IMPORTANT*** Big Data Hadoop Interview Questions.

Aug 22, 2018 in Career Counselling by Omkar
 • 69,220 points • 2,137 views
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