# 🔍 Description
## Issue References 🔗
-
## Describe Your Solution 🔧
Fix the memory leak on server caused by `Files.deleteOnExit`.
For long-running Kyuubi server instances, some operation log files and batch job upload files are marked for deletion at exit using `Files.deleteOnExit`. However, the `files` list within the `DeleteOnExitHook` by `Files.deleteOnExit` method continuously accumulates file paths without being cleaned up, leading to a memory leak issue.
This PR fix this issue by:
1. introduce a new util `FileExpirationUtils` for similar use of `Files.deleteOnExit`, with exposed method for evict file path from the list to prevent accumulative path list
2. adding a service `TempFileService ` in server module, periodical clean-up the files for operation logging path, uploaded resources and etc. And it evict the paths in `TempFileCleanupUtils` instance after cleanup.
3. add the new config `kyuubi.server.tempFile.expireTime` with a default value of 7 days, to control How often to trigger a file expiration clean-up for stale files
## Types of changes 🔖
- [ ] Bugfix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to change)
## Test Plan 🧪
#### Behavior Without This Pull Request ⚰️
#### Behavior With This Pull Request 🎉
#### Related Unit Tests
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# Checklist 📝
- [ ] This patch was not authored or co-authored using [Generative Tooling](https://www.apache.org/legal/generative-tooling.html)
**Be nice. Be informative.**
Closes#6587 from bowenliang123/file-expiration.
Closes#6587
e23b72e08 [liangbowen] change to P14D
acaf370e7 [liangbowen] change config name to kyuubi.server.tempFile.expireTime
6c7ddd527 [liangbowen] import
ed1e4d76f [liangbowen] comment: ConcurrentHashMap.newKeySet
fbf73ccb4 [liangbowen] update
34d3fc71c [liangbowen] add guava to common module's dep
49c10e5ef [Bowen Liang] file expiration
Lead-authored-by: Bowen Liang <liangbowen@gf.com.cn>
Co-authored-by: liangbowen <liangbowen@gf.com.cn>
Co-authored-by: Bowen Liang <liangbowen@gf.com.cn>
Signed-off-by: liangbowen <liangbowen@gf.com.cn>
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