when do reducers play their role in a mapreduce task?
No Answer is Posted For this Question
Be the First to Post Answer
What is Mapper in Hadoop MapReduce?
In Hadoop what is InputSplit?
Why MapReduce uses the key-value pair to process the data?
What is Distributed Cache in the MapReduce Framework?
What are ‘reduces’?
What are the data components used by Hadoop?
What do you understand by the term Straggler ?
Why is output file name in Hadoop MapReduce part-r-00000?
Mention Hadoop core components?
How can you add the arbitrary key-value pairs in your mapper?
How to create a custom key and custom value in MapReduce Job?
What is a RecordReader in Hadoop MapReduce?
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)