vihangk1 opened a new pull request, #41749:
URL: https://github.com/apache/spark/pull/41749
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### What changes were proposed in this pull request?
The `CacheManager` refreshFileIndexIfNecessary logic checks if the fileIndex
root paths starts with the input path. This is problematic if the input path
and root path share the prefixes but the root path is not a subdirectory of the
input path. In such cases, the CacheManager can unnecessarily refresh the
fileIndex which can fail the query if it does not have access to the rootPath
for that SparkSession.
### Why are the changes needed?
Fixes the bug where the queries on cached dataframe APIs can fail if the
cached path shares prefix with the different path.
### Does this PR introduce _any_ user-facing change?
NO
### How was this patch tested?
Unit test
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