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Latest Questions for Big Data Tutorial and Training
How to check if ZooKeeper is running or up from command prompt
Hi, I want to see if the ZooKeeper is running or not on my Hadoop cluster. How to check if ZooKeeper is running or up from command prompt? Thanks
May 23, 2018 at 12:28 AM

rename index in elasticsearch
How to rename index in elasticsearch? I have an index with millions of records in it. I want to rename this index to another name. There is some business requirement to rename it. What is the command to rename index in elasticsearch?
May 18, 2018 at 1:17 AM

how to get number of shards in elasticsearch
Hi, I have elastic search server and I want to get the details of shards for each index. how to get number of shards in elasticsearch? Thanks
May 17, 2018 at 1:36 AM

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hadoop_home or hadoop.home.dir are not set eclipse
Hi, I am running an application in Eclipse. I have set HADOOP_HOME correctly in Ubuntu and can see the values with the command: echo $HADOOP_HOME But eclipse is not detection it and
May 16, 2018 at 12:50 AM

Add jars to a Spark Job spark-submit
Add jars to a Spark Job spark-submit I want to submit some dependency jars along with the code jar file with spark-submit. How to add jar to the Spark Job Submit process? Thanks
May 1, 2018 at 4:34 AM

What is a Big Data Hadoop consultant
Hi, What is a Big Data Hadoop consultant? What are there role? Thanks
April 30, 2018 at 10:28 AM

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Will Spark overtake Hadoop
Hi, Will Spark overtake Hadoop? Spark is very popular and much faster then MapReduce. So, can it replace Hadoop? Thanks
April 30, 2018 at 10:06 AM

What is the equivalent of MapReduce reducer in spark
Hi, What to use for MapReduce in Spark? What is the equivalent of MapReduce reducer in spark? Thanks
April 30, 2018 at 9:58 AM

What makes Spark faster than MapReduce?
Hi, What makes Spark faster than MapReduce? Thanks
April 30, 2018 at 9:49 AM

What is RDD in spark
Hi, I am new to Spark programming and when I started learning i encountered RDD first. What is RDD in spark? Thanks
April 30, 2018 at 9:13 AM

is rdd mutable
Hi, I am new to Spark programming and I am not able to see any way to modify the data of RDD. is rdd mutable? Thanks
April 30, 2018 at 9:09 AM

how to create rdd in pyspark
Hi, I am have to create an RDD from a String in PySpark. How to do this? How to create rdd in pyspark?
April 30, 2018 at 9:03 AM

spark-core_2.11 maven dependency
Hi, I want to create Spark Application and need maven dependency to add into pom.xml file of the project. Where can I find spark-core_2.11 maven dependency jar files? What is the way to add spark-core_2.11 maven dependency
April 27, 2018 at 10:26 AM

yarn.scheduler.minimum-allocation-mb
Hi, I am submitting an Java Spark job on yarn cluster. It is throwing error: Can't allocate enough ram as it outside max allowed. yarn.scheduler.minimum-allocation-mb How to solve this? Thanks
April 26, 2018 at 4:39 AM

Allowing only localhost in Elasticsearch
Hi, I have installed Elasticserch on the production platform. Now I want to enable its access only from localhost. How I can allow Elasticseach from localhost only? Thanks
March 19, 2018 at 7:39 AM

Enabling remote access in Elasticsearch
Hi, I have installed Elasticsearch on my server. Now I want to access it from another computer. It not accessible from other computer on port 9200. Its only accessible at http://localhost:9200/ How I can enable its access f
March 19, 2018 at 7:32 AM

What are characteristics of IoT?
Hi, I am new to IoT and want to know more about it. Where it is used and what are the characteristics of Internet of Things? What are career opportunities in IoT? Thanks
March 18, 2018 at 3:24 AM

Features and components of Hadoop
Hi Guys, I am learning Hadoop and just started with the Big Data basic details. I Found Hadoop is most popular Big Data platform and I want to learn Hadoop in very detail. So, I want to know the Features and components of Hadoop to
March 18, 2018 at 12:58 AM

What are Internet of things?
Hi, What is are Internet of Things and why its so popular these days? Is there any job opportunities in Internet of Things? Thanks
March 17, 2018 at 11:11 PM

NameError: name 'SparkConf' is not defined
Hi, What is solution of the error: NameError: name 'SparkConf' is not defined Thanks
March 13, 2018 at 7:29 AM

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