Low latency data access. It is not optimized for low latency data access it trades latency to increase the throughput of the data. ● Lots of small files. Since block size is 64 MB and lots of small files(will waste blocks) will increase the memory requirements of namenode. ● Multiple writers and arbitrary modification. There is no support for multiple writers in HDFS and files are written to by a single writer after end of each file.
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