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File, Directories, and Handles
Let's explore how Chubby works with files, directories, and handles.
Chubby file system interface is basically a tree of files and directories, where each directory contains a list of child files and directories. Each file or directory is called a node.
Nodes
- Any node can act as an advisory reader/writer lock.
- Nodes may either be ephemeral or permanent.
- Ephemeral files are used as temporary files, and act as an indicator to others that a client is alive.
- Ephemeral files are also deleted if no client has them open.
- Ephemeral directories are also deleted if they are empty.
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