Hello,
I have recently come across a case where the _read_cache() function calls it's self so many times the nesting level is reached.
I tried to rebuild the table with s3fs-refresh-cache but this failed as well with about 2 million files in S3.
Here's a patch that solves both problems for me so may be useful for someone else as well.
Closed: outdated
2.2
Code
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Drupal 7 end-of-life triage:
Drupal 7 reached end of life on January 5th.
The 7.x branches of S3FS do not have any additional planned releases.
The requests in this issue do not appear to exist in the 8.x-3.x and newer branches.