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What are the primary phases of the reducer?
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Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?
Explain about Hadoop file system and processing framework?
Explain the common input formats in hadoop?
Explain InputSplit in Hadoop?
Mention what are the three modes in which hadoop can be run?
What is a udf?
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?
What is namenode?
Define a record reader?
Can hadoop handle streaming data?
What does hadoop-metrics.properties file do?
What are the port numbers of job tracker?
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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)
