Did you ever ran into a lop sided job that resulted in out of memory error

1281

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What is the communication channel between client and namenode/datanode?

1773

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What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?

1220

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What is the problem with HDFS and streaming data like logs

1069

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What is the Use of SSH in Hadoop ?

1000

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What infrastructure do we need to process 100 TB data using Hadoop?

1052

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What is the difference between a Hadoop and Relational Database and Nosql?

1118

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What is Schema on Read and Schema on Write?

956

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What is the difference between traditional RDBMS and Hadoop?

1210

---

What is the main purpose of HDFS fsck command?

1852

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What is safe mode in Hadoop?

1015

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What is MapFile?

1003

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What do you understand from Node redundancy and is it exist in hadoop cluster?

1277

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What happens to a NameNode that has no data?

1624

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What is a heartbeat in HDFS?

977

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