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How can one copy a file into HDFS with a different block size to that of existing block size configuration?
46Post New Apache HDFS Hadoop Distributed File System Questions
What are problems with small files and hdfs?
How to restart NameNode or all the daemons in Hadoop HDFS?
Does HDFS allow a client to read a file which is already opened for writing?
What do you mean by metadata in Hadoop?
What is a block in Hadoop HDFS? What should be the block size to get optimum performance from the Hadoop cluster?
Differentiate HDFS & HBase?
Replication causes data redundancy then why is is pursued in HDFS?
Suppose there is file of size 514 mb stored in hdfs (hadoop 2.x) using default block size configuration and default replication factor. Then, how many blocks will be created in total and what will be the size of each block?
Why ‘Reading‘ is done in parallel and ‘Writing‘ is not in HDFS?
Explain how are file systems checked in hdfs?
What is secondary namenode?
What is the difference between namenode, backup node and checkpoint namenode?
What are the main hdfs-site.xml properties?
Explain about the indexing process in hdfs?
How data or a file is written into hdfs?
