FileCache bootup logic for Composite Directory #17526
Description
Describe the bug
When a node restarts or boots up, the FileCache used by CompositeDirectory for warm indices is not initialized with the local files that already exist. This means the FileCache is unaware of files present on the local system. We need to ensure that the FileCache is properly initialized with information about existing local files during node startup to maintain consistency and correct recovery.
Part of Meta issue: #13149
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Expected behavior
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Additional Details
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- Version [e.g. 22]
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