navina commented on code in PR #10047:
URL: https://github.com/apache/pinot/pull/10047#discussion_r1198182331
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/upsert/ConcurrentMapPartitionUpsertMetadataManager.java:
##########
@@ -53,14 +56,22 @@ public class ConcurrentMapPartitionUpsertMetadataManager
extends BasePartitionUp
@VisibleForTesting
final ConcurrentHashMap<Object, RecordLocation>
_primaryKeyToRecordLocationMap = new ConcurrentHashMap<>();
+ // keep track of all segments that haven't reach stable state to persist
snapshot
Review Comment:
Can you clarify what you mean by a "stable" state of a segment?
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/upsert/PartitionUpsertMetadataManager.java:
##########
@@ -84,6 +84,16 @@ public interface PartitionUpsertMetadataManager extends
Closeable {
*/
GenericRow updateRecord(GenericRow record, RecordInfo recordInfo);
+ /**
+ * Remove from the primary key index when the PK are expired if TTL is
enabled.
+ */
+ void removeExpiredPrimaryKeys(Comparable expiredTimestamp);
+
+ /**
+ * Persist validDocIds snapshot when the validDocIds is stable if TTL is
enabled.
+ */
+ void persistSnapshotForStableSegments(long expiredTimestamp);
+
Review Comment:
Why is the `expiredTimestamp` in `removeExpiredPrimaryKeys` a `Comparable` ,
whereas it is a `long` in `persistSnapshotForStableSegments` ?
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/upsert/ConcurrentMapPartitionUpsertMetadataManager.java:
##########
@@ -181,6 +198,55 @@ protected void removeSegment(IndexSegment segment,
MutableRoaringBitmap validDoc
}
}
+ /**
+ * When TTL is enabled for upsert, this function is used to remove expired
keys from the primary key indexes.
+ *
+ * When committing consuming segment, we replace the consuming segment with
an immutable segments.
+ * After replaceSegment, we iterate over recordInfoIterator to find
validDocIds that are expired (out-of-TTL).
+ * Primarykey expired when the comparison time value of the record is less
or equal to (segmentEndTime - TTL).
+ *
+ * @param expiredTimestamp segmentEndTime - TTLTime (converted ttl time
values in millis time unit)
+ * @return void
+ */
+ @Override
+ public void doRemoveExpiredPrimaryKeys(Comparable expiredTimestamp) {
Review Comment:
+1 to the above. can you please call this out in the javadoc and in the oss
pinot docs (when you get to it)?
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