poorbarcode opened a new pull request, #24432:
URL: https://github.com/apache/pulsar/pull/24432
### Motivation
**The reproduction steps of the issue:**
- There are `4` ledgers in the ManagedLedger
- `3` ledgers are offloaded.
- The BK ledgers are deleted because they were offloaded.
- Issue:
- Actual behavior: `ManagedLedger.getLedgerHandle(long ledgerId)` returns
BK ledger handles, which have been deleted
- Expected behavior: `ManagedLedger.getLedgerHandle(long ledgerId)`
returns Offloader ledger handles.
**Root cause**
Trimming ledgers, BK ledgers are deleted, and `LedgerCache` of
`ManagedLedger` does not remove the cached ledger handle in memory.
### Modifications
- In scope: Remove cached ledger handles when trimming offloaded ledgers.
- Not in scope: This PR will not solve the issue: Ledger is being deleted,
but a cursor still uses the ledger handle to read entries. This issue will be
resolved automatically because ManagedLedger will recreate the ledger handle
when it receives a failed read entry callback
### Documentation
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- [ ] `doc` <!-- Your PR contains doc changes. -->
- [ ] `doc-required` <!-- Your PR changes impact docs and you will update
later -->
- [x] `doc-not-needed` <!-- Your PR changes do not impact docs -->
- [ ] `doc-complete` <!-- Docs have been already added -->
### Matching PR in forked repository
PR in forked repository: x
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