Explain how do ‘map’ and ‘reduce’ work?
No Answer is Posted For this Question
Be the First to Post Answer
Why Mapper runs in heavy weight process and not in a thread in MapReduce?
What are the data components used by Hadoop?
What are combiners? When should I use a combiner in my MapReduce Job?
What platform and Java version is required to run Hadoop?
For a job in Hadoop, is it possible to change the number of mappers to be created?
Write a Mapreduce Program for Character Count ?
Explain what is shuffling in mapreduce?
What can be optimum value for Reducer?
what are the three modes in which Hadoop can be run?
Define the purpose of the partition function in mapreduce framework
How to handle record boundaries in Text files or Sequence files in MapReduce InputSplits?
How can you add the arbitrary key-value pairs in your mapper?
Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)
Apache Spark (991)
Apache HBase (164)
Apache Flume (95)
Apache Impala (72)
Apache Cassandra (392)
Apache Mahout (35)
Apache Sqoop (82)
Apache ZooKeeper (65)
Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)
Apache Avro (26)
Apache Presto (15)
Apache Tajo (26)
Hadoop General (407)