Why aggregation cannot be done in Mapper?

Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...

Why aggregation cannot be done in Mapper?

Question Posted / sai dasari

0 Answers
520 Views
I also Faced
E-Mail Answers

No Answer is Posted For this Question
Be the First to Post Answer

Post New Answer

More Hadoop General Interview Questions

What is a record reader?

What are the core components of Hadoop?

Explain map-only job?

Why is Data Block size set to 128 MB in Hadoop?

What is the procedure for namenode recovery?

What happens if the number of reducers is 0 in Hadoop?

What is a Heartbeat in Hadoop?

Explain the Single point of Failure in Hadoop?

What is Identity reducer?

Explain the core methods of the reducer?

Explain Erasure Coding in Hadoop?

Suppose hadoop spawned 100 tasks for a job and one of the tasks failed. What will hadoop do?

For more Hadoop General Interview Questions Click Here

Categories

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)