KKcorps commented on code in PR #15831:
URL: https://github.com/apache/pinot/pull/15831#discussion_r2123098296
##########
pinot-core/src/main/java/org/apache/pinot/core/data/manager/realtime/IngestionDelayTracker.java:
##########
@@ -416,16 +502,74 @@ public long getPartitionIngestionOffsetLag(int
partitionId) {
if (ingestionInfo == null) {
return 0;
}
- StreamPartitionMsgOffset currentOffset = ingestionInfo._currentOffset;
- StreamPartitionMsgOffset latestOffset = ingestionInfo._latestOffset;
+ return ingestionInfo._offsetLag;
+ }
+
+ private StreamPartitionMsgOffset fetchStreamOffset(OffsetCriteria
offsetCriteria, long maxWaitTimeMs,
+ StreamMetadataProvider streamMetadataProvider) {
+ try {
+ return streamMetadataProvider.fetchStreamPartitionOffset(offsetCriteria,
maxWaitTimeMs);
+ } catch (Exception e) {
+ LOGGER.debug("Caught exception while fetching stream offset", e);
+ }
+ return null;
+ }
+
+ /**
+ * Creates a new stream metadata provider
+ */
+ private StreamMetadataProvider createPartitionMetadataProvider(String
reason, String clientId, int partitionGroupId) {
+ LOGGER.info("Creating new partition metadata provider, reason: {}",
reason);
+ return _streamConsumerFactory.createPartitionMetadataProvider(clientId,
partitionGroupId);
+ }
+
+ private void updateOffsetLagForAllPartitions() {
+ List<Map.Entry<Integer, IngestionInfo>> entries = new
ArrayList<>(_ingestionInfoMap.entrySet());
Review Comment:
Yep
Unnecessarily adding a lag metric for a transition that has not occurred
doesn't make sense
e.g. post-rebalance and server restart we might genuinely not have any
consuming segments for this partition but we'll unnecessarily keep reporting
lag metrics
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