Divij Vaidya created KAFKA-15157:
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Summary: Print startup time for RemoteIndexCache
Key: KAFKA-15157
URL: https://issues.apache.org/jira/browse/KAFKA-15157
Project: Kafka
Issue Type: Sub-task
Reporter: Divij Vaidya
When RemoteIndexCache starts up, it will try to re-build the in-memory cache
using the files already present on the disk in the remote-index-cache
directory. The process involves:
1. deleting existing files which are pending delete i.e. have a .delete suffix
2. read the cached index files, if present.
3. creating the indexes (this step will create a MMapped'buffer)
4. perform sanity check on the indexes
5. add to internal cache
The steps 2-5 are bound by the maximum number of entries in the cache. But step
1 could be arbitrary large.
To debug a slow cache startup, we should add a info statement that prints the
time it took to initialize the cache.
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