How to change the replication factor of data which is already stored in HDFS?

37

If a particular file is 50 mb, will the hdfs block still consume 64 mb as the default size?

34

What are file permissions in HDFS and how HDFS check permissions for files or directory?

36

What is a job tracker?

36

Can multiple clients write into a Hadoop HDFS file concurrently?

47

What is a difference between an input split and hdfs block?

72

What is the difference between an hdfs block and input split?

74

Would you be able to change the block size of hdfs files?

43

How HDFS client divide the file into the block while storing inside HDFS?

60

How data or file is written into HDFS?

50

What do you mean by the high availability of a namenode? How is it achieved?

35

Why HDFS stores data using commodity hardware despite the higher chance of failures in hadoop?

35

Can we change the document present in hdfs?

35

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

46

HDFS is used for applications with large data sets, not why Many small files?

38