How to restart NameNode or all the daemons in Hadoop?
No Answer is Posted For this Question
Be the First to Post Answer
Give me an example of document database ?
What do you understand by standalone (or local) mode?
Hadoop achieves parallelism by dividing the tasks across many nodes, it is possible for a few slow nodes to rate-limit the rest of the program and slow down the program. What mechanism Hadoop provides to combat this?
Explain the key benefits of using storm for real time processing?
What are the core methods of a Reducer?
What is the problem with small files in Hadoop?
What are some typical functions of Job Tracker?
What are the most common OutputFormat in Hadoop?
Ideally what should be the replication factor in hadoop?
What happen if number of reducer is set to 0 in Hadoop?
What is Mapper in Hadoop?
How often do you need to reformat the namenode?
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)