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

1209

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

1730

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

1166

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What is the problem with HDFS and streaming data like logs

1015

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What is the Use of SSH in Hadoop ?

957

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

997

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

1072

---

What is Schema on Read and Schema on Write?

914

---

What is the difference between traditional RDBMS and Hadoop?

1163

---

What is the main purpose of HDFS fsck command?

1788

---

What is safe mode in Hadoop?

953

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What is MapFile?

962

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

1226

---

What happens to a NameNode that has no data?

1581

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What is a heartbeat in HDFS?

913

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