Answers by nitinrawat895

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Storing collection of images in HDFS

answered Aug 9, 2018 in Big Data Hadoop • 1,003 views
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When a reduce class also serve as a combiner?

answered Aug 9, 2018 in Big Data Hadoop • 527 views
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Increasing HFile block size

answered Aug 6, 2018 in Big Data Hadoop • 721 views
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Designing Schema in HBase

answered Aug 6, 2018 in Big Data Hadoop • 632 views
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What is the difference between rdd and dataframes in Apache Spark ?

answered Aug 3, 2018 in Apache Spark • 42,492 views
+1 vote

groupByKey vs reduceByKey in Apache Spark.

answered Aug 3, 2018 in Apache Spark • 75,977 views
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Can anyone explain fold() operation in Spark?

answered Aug 3, 2018 in Apache Spark • 12,059 views
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Is there any way to make Apache Commons Math Library available to MapReducer job at runtime?

answered Aug 3, 2018 in Big Data Hadoop • 968 views
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Reading the file and populating the associative array

answered Aug 2, 2018 in Big Data Hadoop • 954 views
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What happens in a MapReduce job when you set the number of reducers to one?

answered Jul 31, 2018 in Big Data Hadoop • 1,859 views
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HDFS for customer information file

answered Jul 31, 2018 in Big Data Hadoop • 453 views
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How a client reads a file from HDFS?

answered Jul 31, 2018 in Big Data Hadoop • 2,367 views
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Passing keys and values to the reducers during a standard sort and shuffle phase of MapReduce

answered Jul 27, 2018 in Big Data Hadoop • 2,186 views
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when i tried to run the hdfs namenode -format command...its failed to run..can anyone help me with this???

answered Jul 26, 2018 in Big Data Hadoop • 11,576 views
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Reading Performance in Hadoop Cluster

answered Jul 25, 2018 in Big Data Hadoop • 555 views
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Difference between a failed task attempt and a killed task attempt

answered Jul 24, 2018 in Big Data Hadoop • 2,890 views
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What metadata is stored on a DataNode when a block is written to it?

answered Jul 23, 2018 in Big Data Hadoop • 2,792 views
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Importing a portion of Relational Database to HDFS

answered Jul 20, 2018 in Big Data Hadoop • 1,603 views
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How can Hadoop discover missing or corrupt HDFS data?

answered Jul 19, 2018 in Big Data Hadoop • 1,301 views
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How the FIFO Scheduler arbitrates the cluster resources for a job and its tasks?

answered Jul 19, 2018 in Big Data Hadoop • 854 views
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