cryptoe commented on code in PR #15965:
URL: https://github.com/apache/druid/pull/15965#discussion_r1502352006
##########
extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/exec/ControllerImpl.java:
##########
@@ -1715,12 +1725,95 @@ private void publishSegmentsIfNeeded(
{
if (queryKernel.isSuccess() &&
MSQControllerTask.isIngestion(task.getQuerySpec())) {
final StageId finalStageId =
queryKernel.getStageId(queryDef.getFinalStageDefinition().getStageNumber());
+ queryDef.getFinalStageDefinition().getClusterBy();
//noinspection unchecked
@SuppressWarnings("unchecked")
final Set<DataSegment> segments = (Set<DataSegment>)
queryKernel.getResultObjectForStage(finalStageId);
+ DataSchema dataSchema = ((SegmentGeneratorFrameProcessorFactory)
queryKernel.getStageDefinition(finalStageId)
+
.getProcessorFactory()).getDataSchema();
+
+ ShardSpec shardSpec = segments.isEmpty()
+ ? null
+ : segments.stream()
+ .findFirst()
+ .get()
+
.getShardSpec();
+ List<String> partitionDimensions = Collections.emptyList();
+
+ if (shardSpec != null && (Objects.equals(shardSpec.getType(),
ShardSpec.Type.SINGLE)
+ || Objects.equals(shardSpec.getType(),
ShardSpec.Type.RANGE))) {
+ partitionDimensions = ((DimensionRangeShardSpec)
shardSpec).getDimensions();
+ }
+
+ Function<Set<DataSegment>, Set<DataSegment>>
compactionStateAnnotateFunction = compactionStateAnnotateFunction(
+ task(),
+ context.jsonMapper(),
+ dataSchema,
+ partitionDimensions
+ );
log.info("Query [%s] publishing %d segments.", queryDef.getQueryId(),
segments.size());
- publishAllSegments(segments);
+ publishAllSegments(compactionStateAnnotateFunction.apply(segments));
+ }
+ }
+
+ public static Function<Set<DataSegment>, Set<DataSegment>>
compactionStateAnnotateFunction(
+ MSQControllerTask task,
+ ObjectMapper jsonMapper,
+ DataSchema dataSchema,
+ List<String> partitionDimensions
+ )
+ {
+ final boolean storeCompactionState = task.getContextValue(
+ Tasks.STORE_COMPACTION_STATE_KEY,
+ Tasks.DEFAULT_STORE_COMPACTION_STATE
+ );
+
+ if (storeCompactionState) {
+ IndexSpec indexSpec =
task.getQuerySpec().getTuningConfig().getIndexSpec();
+ GranularitySpec granularitySpec = dataSchema.getGranularitySpec();
+ DimensionsSpec dimensionsSpec = dataSchema.getDimensionsSpec();
+ Map<String, Object> transformSpec = dataSchema.getTransformSpec() == null
+ ||
TransformSpec.NONE.equals(dataSchema.getTransformSpec())
+ ? null
+ : new
ClientCompactionTaskTransformSpec(dataSchema.getTransformSpec()
+
.getFilter()).asMap(
+ jsonMapper);
+ List<Object> metricsSpec = dataSchema.getAggregators() == null
+ ? null
+ : jsonMapper.convertValue(
+ dataSchema.getAggregators(),
+ new TypeReference<List<Object>>()
+ {
+ }
+ );
+
+ // Even if partition dimensions is empty, use
DimensionRangePartitionsSpec to record other info
+ // such as rowsPerSegment
+
+ PartitionsSpec partitionSpec = new DimensionRangePartitionsSpec(
Review Comment:
```
https://github.com/apache/druid/blob/aeaf41f7d08172451dce78875750ee2fd93267ef/extensions-core/multi-stage-query/src/main/java/org/apache/druid/msq/exec/ControllerImpl.java#L1150
```
MSQ also generates numberedShardSpecs in a replace statement if clustered by
is null.
A good test case to debug :
https://github.com/apache/druid/blob/aeaf41f7d08172451dce78875750ee2fd93267ef/extensions-core/multi-stage-query/src/test/java/org/apache/druid/msq/exec/MSQReplaceTest.java#L95-L96
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