what is "map" and what is "reducer" in Hadoop?
No Answer is Posted For this Question
Be the First to Post Answer
What is a RecordReader in Hadoop MapReduce?
How is reporting controlled in hadoop?
Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.
What is KeyValueTextInputFormat in Hadoop MapReduce?
what job does the conf class do?
What is LazyOutputFormat in MapReduce?
What is Mapper in Hadoop MapReduce?
MapReduce Types and Formats and Setting up a Hadoop Cluster?
What can be optimum value for Reducer?
What is shuffling in mapreduce?
what daemons run on a master node and slave nodes?
What is identity mapper and chain 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)