[cherry-pick][branch-2.10]Fix broker cache eviction of entries read by active cursor #18980
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liangyepianzhou
requested review from
lhotari,
codelipenghui,
eolivelli and
congbobo184
and removed request for
lhotari and
codelipenghui
* Extracted interface for EntryCacheManager * Fixed references * added more methods to the interface * Fixed mocked test * Removed unused import * Fixed wrong casting in reflection access (cherry picked from commit c7faf62)
Fixes #16584 With the `RangeCache`, it is hard to reason about its behavior other than cache hits/misses or the cache's size hitting the limit and triggering a size based eviction. This PR adds 3 new metrics to help provide additional insight into the cache's behavior. It adds `pulsar_ml_cache_inserted_entries_total`, `pulsar_ml_cache_evicted_entries_total`, and `pulsar_ml_cache_entries`. * Add new metrics for cache insertion, eviction, and current number of entries. * Add new methods to the `ManagedLedgerFactoryMXBean` interface. * Update several method return values in the `RangeCache`. * Update tests. This change is covered by modified tests that already existed. There is a breaking change to the `RangeCache` class for the `clear` and the `evictLEntriesBeforeTimestamp` methods. The previous result was a `long`, and now it is a `Pair<Integer, Long>`. The new result matches the same style as `evictLeastAccessedEntries`. Given that this class is only meant for use within the broker, I think it is reasonable to break these methods. I will send a note to the mailing list. - [x] `doc` (cherry picked from commit e3b2540)
…sors (#17273) * [fix][broker] Fix broken build caused by conflict between #17195 and #16605 - #17195 changed the method signature that #16605 depended upon * [fix][broker] Keep sorted list of cursors ordered by read position of active cursors when cacheEvictionByMarkDeletedPosition=false Fixes #16054 - calculate the sorted list of when a read position gets updated - this resolves #9958 in a proper way - #12045 broke the caching solution as explained in #16054 - remove invalid tests - fix tests - add more tests to handle corner cases * Address review comment * Handle durable & non-durable in the correct way * Fix cache tests since now entries get evicted reactively * Address review comment about method names * Change signature for add method so that position must be passed - this is more consistent with cursorUpdated method where the position is passed * Update javadoc for ManagedCursorContainer * Address review comment * Simplify ManagedCursorContainer * Clarify javadoc * Ensure that cursors are tracked by making sure that initial position isn't null unintentionally * Prevent race in updating activeCursors (cherry picked from commit 856ef15)
liangyepianzhou
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Motivation
Cherry-pick #17273
Modifications
Cherry-pick #17273
And it will require directly or indirectly these PRs:
#14985
#17248
#15933
#13679
#14488
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