Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?
No Answer is Posted For this Question
Be the First to Post Answer
What are advantages of Spark over MapReduce?
What is the inputsplit in map reduce software?
In MapReduce, ideally how many mappers should be configured on a slave?
What is the need of MapReduce in Hadoop?
What is partitioner and its usage?
If reducers do not start before all mappers finish then why does the progress on mapreduce job shows something like map(50%) reduce(10%)? Why reducers progress percentage is displayed when mapper is not finished yet?
What is mapper in map reduce?
List the network requirements for using Hadoop ?
Does mapreduce programming model provide a way for reducers to communicate with each other? In a mapreduce job can a reducer communicate with another reducer?
What is the need of key-value pair to process the data in MapReduce?
Compare Pig vs Hive vs Hadoop MapReduce?
How can we assure that the values regarding a particular key goes to the same reducer?
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)