Recent questions and answers in HDFS

Madanswer

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Flume Architecture

asked Jun 20 in HDFS by Robindeniel

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What are the core components of Hadoop?

answered Jun 8 in HDFS by sharadyadav1986

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What are the key features of HDFS?

answered Jun 8 in HDFS by sharadyadav1986

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Explain the HDFS Architecture and list the various HDFS daemons in HDFS cluster?

answered Jun 8 in HDFS by sharadyadav1986

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What is checkpointing in Hadoop?

answered Jun 8 in HDFS by sharadyadav1986

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What is a NameNode in Hadoop?

answered Jun 8 in HDFS by sharadyadav1986

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What is a DataNode in HDFS?

answered Jun 8 in HDFS by sharadyadav1986

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Is Namenode machine same as DataNode machine as in terms of hardware?

answered Jun 8 in HDFS by sharadyadav1986

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What is the difference between NAS (Network Attached Storage) and HDFS?

answered Jun 8 in HDFS by sharadyadav1986

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What is the difference between traditional RDBMS and Hadoop?

answered Jun 8 in HDFS by sharadyadav1986

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What is throughput? How does HDFS provides good throughput?

answered Jun 8 in HDFS by sharadyadav1986

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What is Secondary NameNode? Is it a substitute or back up node for the NameNode?

answered Jun 8 in HDFS by sharadyadav1986

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What is the problem in having lots of small files in HDFS?

answered Jun 8 in HDFS by sharadyadav1986

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What is a heartbeat in HDFS?

answered Jun 8 in HDFS by sharadyadav1986

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How would you check whether your NameNode is working or not?

answered Jun 8 in HDFS by sharadyadav1986

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What is a block in HDFS?

answered Jun 8 in HDFS by sharadyadav1986

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Suppose there is file of size 514 MB stored in HDFS (Hadoop 2.x) using default block size configuration and default replication factor.

answered Jun 8 in HDFS by sharadyadav1986

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How to copy a file into HDFS with a different block size to that of existing block size configuration?

answered Jun 8 in HDFS by sharadyadav1986

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Can you change the block size of HDFS files?

answered Jun 8 in HDFS by sharadyadav1986

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What is a block scanner in HDFS?

answered Jun 8 in HDFS by sharadyadav1986

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HDFS stores data using commodity hardware which has higher chances of failures

answered Jun 8 in HDFS by sharadyadav1986

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Replication causes data redundancy and consume a lot of space, then why is it pursued in HDFS?

answered Jun 8 in HDFS by sharadyadav1986

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Can we have different replication factor of the existing files in HDFS?

answered Jun 8 in HDFS by sharadyadav1986

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What is a rack awareness algorithm and why is it used in Hadoop?

answered Jun 8 in HDFS by sharadyadav1986

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How data or a file is written into HDFS?

answered Jun 8 in HDFS by sharadyadav1986

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Can you modify the file present in HDFS?

answered Jun 8 in HDFS by sharadyadav1986

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Can multiple clients write into an HDFS file concurrently?

answered Jun 8 in HDFS by sharadyadav1986

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Does HDFS allow a client to read a file which is already opened for writing?

answered Jun 8 in HDFS by sharadyadav1986

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Define Data Integrity? How does HDFS ensure data integrity of data blocks stored in HDFS?

answered Jun 8 in HDFS by sharadyadav1986

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What do you mean by the High Availability of a NameNode? How is it achieved?

answered Jun 8 in HDFS by sharadyadav1986

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