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September 20, 2018 at 4:52 pm #5982DataFlair TeamSpectator
- In order to manage data on computer, one has to interact with the File System directly or indirectly.
- When we install Hadoop on our computer, actually there are two file system exists on machine
(1) Local File System ,
(2) HDFS (Hadoop Distributed File System) - HDFS is sits top on of Local File System.
Following are the genera functions of File System (be it Local or HDFS)
- Control the data access mechanism (i.e how data stored and retrived)
- Manages the metadata about the Files / Folders (i.e. created date, size etc)
- Grants the access permission and manage the securities
- Efficiently manage the storage space
For more details, please follow: HDFS
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September 20, 2018 at 4:53 pm #5983DataFlair TeamSpectator
- File system manages user data that is how data is read, write and accessed.
- FS is the structure behind how our system stores and organizes data.
- FS stores all the information bout the file (metadata) like file name, the length of the contents of a file, and the location of the file in the folder hierarchy—separate from the contents of the file.
- The main role of FS is to make sure that what/whoever is accessing the data and whatever action is taken the structure remains consistent.
For more details, please follow: HDFS
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