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Why do we need hadoop for big data analytics?
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What is the difference between TextinputFormat and KeyValueTextInputFormat class?
What is a record reader?
What are the common types of NOSQL data bases ?
How is security achieved in Hadoop?
What are some typical functions of job tracker in hadoop?
How do you overwrite replication factor?
What is the characteristic of streaming API that makes it flexible run MapReduce jobs in languages like Perl, Ruby, Awk etc.?
Web-ui shows that half of the datanodes are in decommissioning mode. What does that mean? Is it safe to remove those nodes from the network?
Why Hadoop performs replication, although it results in data redundancy?
What are the configuration files in Hadoop?
Explain the core methods of the reducer?
What are the Features of Hadoop?
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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)
