aho135 commented on code in PR #19372:
URL: https://github.com/apache/druid/pull/19372#discussion_r3165031704
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indexing-service/src/main/java/org/apache/druid/indexing/seekablestream/supervisor/SeekableStreamSupervisor.java:
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@@ -4347,6 +4478,179 @@ && checkSourceMetadataMatch(dataSourceMetadata)) {
return Collections.emptyMap();
}
+ /**
+ * Check if all partitions in a task group have reached their bounded end
offsets.
+ * Used to determine if the task group completed successfully vs failed
midway.
+ *
+ * @param groupId The task group ID to check
+ * @return true if all partitions in the group have reached their end
offsets, false otherwise
+ */
+ private boolean hasTaskGroupReachedBoundedEnd(int groupId)
+ {
+ BoundedStreamConfig boundedConfig = ioConfig.getBoundedStreamConfig();
+ Map<PartitionIdType, SequenceOffsetType> endOffsets =
+ convertBoundedConfigMap(boundedConfig.getEndSequenceNumbers());
+ Map<PartitionIdType, SequenceOffsetType> currentOffsets =
getOffsetsFromMetadataStorage();
+
+ log.info(
+ "Bounded mode: checking completion for taskGroup[%d]. Current offsets
from metadata: %s, End offsets: %s",
+ groupId,
+ currentOffsets,
+ endOffsets
+ );
+
+ if (currentOffsets == null || currentOffsets.isEmpty()) {
+ log.debug("No checkpointed offsets found, taskGroup[%d] has not
completed", groupId);
+ return false; // No progress yet, task hasn't completed
+ }
+
+ Set<PartitionIdType> partitionsInGroup = partitionGroups.get(groupId);
+ if (partitionsInGroup == null || partitionsInGroup.isEmpty()) {
+ return false;
+ }
+
+ // Check if ALL partitions in this group have reached their end offsets
+ for (PartitionIdType partition : partitionsInGroup) {
+ SequenceOffsetType endOffset = endOffsets.get(partition);
+ SequenceOffsetType currentOffset = currentOffsets.get(partition);
+
+ if (currentOffset == null) {
+ log.debug(
+ "Partition[%s] in taskGroup[%d] has no checkpointed offset, not
complete",
+ partition,
+ groupId
+ );
+ return false; // Partition hasn't started processing
+ }
+
+ if (!isOffsetAtOrBeyond(currentOffset, endOffset)) {
+ log.debug(
+ "Partition[%s] in taskGroup[%d] at offset[%s], has not reached
end[%s]",
+ partition,
+ groupId,
+ currentOffset,
+ endOffset
+ );
+ return false; // This partition hasn't reached its end
+ }
+ }
+
+ log.info(
+ "All partitions in taskGroup[%d] have reached their end offsets",
+ groupId
+ );
+ return true; // All partitions have reached their end offsets
+ }
+
+ /**
+ * Get current offsets for all partitions in a task group from metadata
storage.
+ */
+ private Map<PartitionIdType, SequenceOffsetType>
getCurrentOffsetsForGroup(int groupId)
+ {
+ Map<PartitionIdType, SequenceOffsetType> allOffsets =
getOffsetsFromMetadataStorage();
+ if (allOffsets == null || allOffsets.isEmpty()) {
+ return Collections.emptyMap();
+ }
+
+ Set<PartitionIdType> partitionsInGroup = partitionGroups.get(groupId);
+ if (partitionsInGroup == null) {
+ return Collections.emptyMap();
+ }
+
+ return partitionsInGroup.stream()
+ .filter(allOffsets::containsKey)
+ .collect(Collectors.toMap(
+ p -> p,
+ allOffsets::get
+ ));
+ }
+
+ /**
+ * Get end offsets for all partitions in a task group from bounded config.
+ */
+ private Map<PartitionIdType, SequenceOffsetType> getEndOffsetsForGroup(int
groupId)
+ {
+ BoundedStreamConfig boundedConfig = ioConfig.getBoundedStreamConfig();
+ Map<PartitionIdType, SequenceOffsetType> endOffsets =
+ convertBoundedConfigMap(boundedConfig.getEndSequenceNumbers());
+ Set<PartitionIdType> partitionsInGroup = partitionGroups.get(groupId);
+
+ if (partitionsInGroup == null) {
+ return Collections.emptyMap();
+ }
+
+ return partitionsInGroup.stream()
+ .filter(endOffsets::containsKey)
+ .collect(Collectors.toMap(
+ p -> p,
+ endOffsets::get
+ ));
+ }
+
+ /**
+ * Check if all bounded tasks have completed.
+ * Called after createNewTasks() in runInternal to ensure tasks have been
created first.
+ *
+ * For bounded supervisors, we determine completion by checking if new tasks
would be created.
+ * In createNewTasks(), bounded mode checks hasTaskGroupReachedBoundedEnd()
before creating tasks.
+ * If that returns true (offsets reached), no new tasks are created.
+ *
+ * So completion is: no active tasks, no pending tasks, and createNewTasks()
chose not to create any.
+ * This is indicated by empty task groups after createNewTasks() has run.
+ *
+ * We do NOT separately check metadata storage here because:
+ * 1. Metadata may contain stale offsets from previous supervisor runs
+ * 2. createNewTasks() already does the offset checking logic
+ * 3. If tasks were killed/failed and work is incomplete, createNewTasks()
will recreate them
+ *
+ * @return true if all bounded work is complete, false otherwise
+ */
+ private boolean isBoundedWorkComplete()
+ {
+ if (!ioConfig.isBounded()) {
+ return false;
+ }
+
+ // Check if task groups are empty (no tasks active or pending)
+ boolean noActiveTasks = activelyReadingTaskGroups.isEmpty();
+ boolean noPendingTasks =
pendingCompletionTaskGroups.values().stream().allMatch(List::isEmpty);
+
+ if (!noActiveTasks || !noPendingTasks) {
+ return false;
+ }
+
+ // At this point, no tasks are running. Since createNewTasks() already ran,
+ // if tasks aren't running it means either:
+ // A) Tasks completed successfully and offset targets were reached (don't
recreate)
+ // B) Tasks failed/killed and haven't reached targets (will recreate next
run)
+ //
+ // To distinguish, we check if createNewTasks() would create new tasks.
+ // If hasTaskGroupReachedBoundedEnd() returns false for any group,
createNewTasks()
+ // will create tasks next iteration, so we're not complete.
+ for (Integer groupId : partitionGroups.keySet()) {
+ if (!hasTaskGroupReachedBoundedEnd(groupId)) {
+ log.debug("TaskGroup[%d] has not reached bounded end, tasks will be
recreated", groupId);
+ return false;
+ }
+ }
+
+ // All groups have reached their end offsets and no tasks are running.
+ // Work is complete!
+ log.info("All bounded tasks completed for supervisor[%s]", supervisorId);
+ return true;
+ }
+
+ /**
+ * Handle bounded processing completion by shutting down the supervisor.
+ * At this point, all task groups are already empty (verified by
isBoundedWorkComplete),
+ * so we just need to mark the supervisor as completed.
+ */
+ private void handleBoundedCompletion()
+ {
+ log.info("Bounded processing complete for supervisor[%s]. Marking as
COMPLETED.", supervisorId);
+ stateManager.maybeSetState(SupervisorStateManager.BasicState.COMPLETED);
Review Comment:
The latest
[commit](https://github.com/apache/druid/pull/19372/changes/4bed6580f659959873a01b1ea926bb8c8c96fa26#diff-ee5ec6696f9263bed19eefcb5f24e25b4141d15aaa4f13853e8790227e52258b)
handles this workflow
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