Which language is more suitable for text analytics? R or python?
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What are input format, input split & record reader and what they do?
Compare Hadoop and RDBMS?
If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?
What is a namenode?
When we send a data to a node, do we allow settling in time, before sending another data to that node?
How Big is ‘Big Data’?
What happen if one of the datanodes has much slower cpu?
Can we change the file cached by distributed cache
What is Distributed Cache in Hadoop?
What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?
Explain edge nodes in hadoop?
Give a brief overview of Hadoop history?
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)