Recent questions tagged developer

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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 • 1,012 views
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1 answer

Sqoop Metastore ?

Jul 19, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,318 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 • 1,363 views
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1 answer

How to avoid a “split-brain” scenario with NameNodes?

Jul 11, 2018 in Big Data Hadoop by Meci Matt
 • 9,460 points • 4,479 views
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1 answer

How Namenode handles data node failures?

Jul 11, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 6,296 views
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1 answer

Kafka topic not being deleted

Jul 9, 2018 in Apache Kafka by Shubham
 • 13,490 points • 3,059 views
+1 vote
8 answers

How to print the contents of RDD in Apache Spark?

Jul 6, 2018 in Apache Spark by Shubham
 • 13,490 points • 61,796 views
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2 answers

How to use RDD filter with other function?

Jul 5, 2018 in Apache Spark by Shubham
 • 13,490 points • 9,674 views
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1 answer

How to add third party java jars for use in PySpark?

Jul 4, 2018 in Apache Spark by Shubham
 • 13,490 points • 8,693 views
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1 answer

Difference between sparkContext, JavaSparkContext, SQLContext, & SparkSession?

Jul 4, 2018 in Apache Spark by Shubham
 • 13,490 points • 5,321 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 • 1,952 views
+1 vote
1 answer

map vs mapValues in Spark

Jun 29, 2018 in Apache Spark by Shubham
 • 13,490 points • 16,035 views
+1 vote
3 answers

Which cluster type should I choose for Spark?

Jun 27, 2018 in Apache Spark by Shubham
 • 13,490 points • 1,568 views
+2 votes
14 answers

How to create new column with function in Spark Dataframe?

Jun 26, 2018 in Apache Spark by coldcode
 • 2,090 points • 88,754 views
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1 answer

Which is better in term of speed, Shark or Spark?

Jun 26, 2018 in Apache Spark by Shubham
 • 13,490 points • 930 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 • 986 views
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1 answer

Spark Driver roles

Jun 21, 2018 in Apache Spark by shams
 • 3,670 points • 1,046 views
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1 answer

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 • 960 views
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1 answer

Spark standalone client mode

Jun 20, 2018 in Apache Spark by shams
 • 3,670 points • 1,000 views
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1 answer

Ways to create RDD in Apache Spark

Jun 19, 2018 in Apache Spark by Shubham
 • 13,490 points • 4,059 views
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3 answers

Lineage Graph in Spark

Jun 19, 2018 in Apache Spark by Data_Nerd
 • 2,390 points • 11,730 views
0 votes
1 answer

Minimizing Data Transfers in Spark

Jun 19, 2018 in Apache Spark by shams
 • 3,670 points • 1,379 views
0 votes
1 answer

How RDD persist the data in Spark?

Jun 18, 2018 in Apache Spark by kurt_cobain
 • 9,350 points • 1,399 views
0 votes
1 answer

What do we mean by an RDD in Spark?

Jun 18, 2018 in Apache Spark by kurt_cobain
 • 9,350 points • 4,046 views
0 votes
1 answer

When running Spark on Yarn, do I need to install Spark on all nodes of Yarn Cluster?

Jun 14, 2018 in Apache Spark by Shubham
 • 13,490 points • 6,257 views
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1 answer

Different Hadoop Modes

Jun 13, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 13,064 views
0 votes
1 answer

SQLInterpreter in Spark

Jun 7, 2018 in Apache Spark by shams
 • 3,670 points • 734 views
0 votes
1 answer

Different Spark Ecosystem

Jun 4, 2018 in Apache Spark by shams
 • 3,670 points • 870 views
0 votes
1 answer

InputSplit vs HDFS Block

Jun 1, 2018 in Big Data Hadoop by shams
 • 3,670 points • 4,403 views
0 votes
1 answer

How does partitioning work in Spark?

May 31, 2018 in Apache Spark by coldcode
 • 2,090 points • 1,215 views
+1 vote
8 answers

How to replace null values in Spark DataFrame?

May 31, 2018 in Apache Spark by kurt_cobain
 • 9,350 points • 75,361 views
0 votes
1 answer

How to convert rdd object to dataframe in spark

May 30, 2018 in Apache Spark by Shubham
 • 13,490 points • 3,952 views
0 votes
1 answer

Is there any way to uncache RDD?

May 30, 2018 in Apache Spark by kurt_cobain
 • 9,350 points • 1,709 views
0 votes
1 answer

Sqoop vs distCP

May 30, 2018 in Big Data Hadoop by shams
 • 3,670 points • 1,327 views
0 votes
1 answer

NameNode without any data

May 29, 2018 in Big Data Hadoop by Data_Nerd
 • 2,390 points • 1,293 views
0 votes
1 answer

What is the difference between Apache Spark SQLContext vs HiveContext?

May 26, 2018 in Apache Spark by Shubham
 • 13,490 points • 4,596 views
0 votes
1 answer

How to find max value in pair RDD?

May 26, 2018 in Apache Spark by kurt_cobain
 • 9,350 points • 7,986 views
0 votes
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 • 13,729 views
0 votes
1 answer

What's the difference between 'filter' and 'where' in Spark SQL?

May 23, 2018 in Apache Spark by kurt_cobain
 • 9,350 points • 34,396 views
0 votes
1 answer

out of Memory Error in Hadoop

May 22, 2018 in Big Data Hadoop by coldcode
 • 2,090 points • 1,823 views
0 votes
1 answer

When is the reduce tasks start in Hadoop?

May 22, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 3,726 views
0 votes
1 answer

Is a HDFS block sequential ?

May 21, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 1,607 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 • 2,540 views
0 votes
1 answer

Sqoop vs Oracle Hadoop Connectors

May 18, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 950 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 • 1,076 views
0 votes
1 answer

How to install Hadoop in Ubuntu?

May 17, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 651 views
0 votes
1 answer

Hadoop combiners with aggregator functions

May 16, 2018 in Big Data Hadoop by Shubham
 • 13,490 points • 605 views
0 votes
1 answer

Visualization Tool in Cloudera CDH

May 16, 2018 in Big Data Hadoop by kurt_cobain
 • 9,350 points • 1,188 views
0 votes
1 answer

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 • 2,195 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 • 19,189 views
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