krishan1390 commented on code in PR #15563:
URL: https://github.com/apache/pinot/pull/15563#discussion_r2052306825
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pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/realtime/PinotLLCRealtimeSegmentManager.java:
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@@ -1651,13 +1655,17 @@ private void createNewConsumingSegment(TableConfig
tableConfig, StreamConfig str
}
private Map<Integer, StreamPartitionMsgOffset>
fetchPartitionGroupIdToSmallestOffset(
- List<StreamConfig> streamConfigs) {
+ List<StreamConfig> streamConfigs, IdealState idealState) {
Map<Integer, StreamPartitionMsgOffset> partitionGroupIdToSmallestOffset =
new HashMap<>();
for (StreamConfig streamConfig : streamConfigs) {
+
+ List<PartitionGroupConsumptionStatus>
currentPartitionGroupConsumptionStatusList =
+ getPartitionGroupConsumptionStatusList(idealState, streamConfigs);
+
OffsetCriteria originalOffsetCriteria = streamConfig.getOffsetCriteria();
streamConfig.setOffsetCriteria(OffsetCriteria.SMALLEST_OFFSET_CRITERIA);
List<PartitionGroupMetadata> partitionGroupMetadataList =
- getNewPartitionGroupMetadataList(streamConfigs,
Collections.emptyList());
+ getNewPartitionGroupMetadataList(streamConfigs,
currentPartitionGroupConsumptionStatusList);
Review Comment:
if we send empty list to getNewPartitionGroupMetadataList, the function
assumes that no shards are currently being consumed.
for kinesis, we need to completely consume a parent shard before starting
consumption for a child shard.
so if parent shard doesn't exist, the function doesn't return child shards
because it asks us to consume parent shard first.
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