kriti-sc commented on a change in pull request #6873:
URL: https://github.com/apache/incubator-pinot/pull/6873#discussion_r632098775
##########
File path:
pinot-server/src/main/java/org/apache/pinot/server/api/resources/SegmentMetadataFetcher.java
##########
@@ -63,9 +77,67 @@ public static String getSegmentMetadata(SegmentDataManager
segmentDataManager, L
}
ObjectNode segmentMetadataJson = (ObjectNode)
segmentMetadata.toJson(columnSet);
segmentMetadataJson.set("indexes",
JsonUtils.objectToJsonNode(getIndexesForSegmentColumns(segmentDataManager)));
+ segmentMetadataJson.set(STAR_TREE_INDEX_KEY,
JsonUtils.objectToJsonNode((getStartreeIndexForSegmentColumns(segmentDataManager))));
return JsonUtils.objectToString(segmentMetadataJson);
}
+ /**
+ * Get the JSON object containing star tree index details for a segment.
+ */
+ private static List<Map<String, Object>>
getStartreeIndexForSegmentColumns(SegmentDataManager segmentDataManager) {
+ List<Map<String, Object>> startreeDetails = new ArrayList<>();
+
+ if (segmentDataManager instanceof ImmutableSegmentDataManager) {
Review comment:
This is done.
##########
File path:
pinot-server/src/main/java/org/apache/pinot/server/api/resources/SegmentMetadataFetcher.java
##########
@@ -63,9 +77,67 @@ public static String getSegmentMetadata(SegmentDataManager
segmentDataManager, L
}
ObjectNode segmentMetadataJson = (ObjectNode)
segmentMetadata.toJson(columnSet);
segmentMetadataJson.set("indexes",
JsonUtils.objectToJsonNode(getIndexesForSegmentColumns(segmentDataManager)));
+ segmentMetadataJson.set(STAR_TREE_INDEX_KEY,
JsonUtils.objectToJsonNode((getStartreeIndexForSegmentColumns(segmentDataManager))));
return JsonUtils.objectToString(segmentMetadataJson);
}
+ /**
+ * Get the JSON object containing star tree index details for a segment.
+ */
+ private static List<Map<String, Object>>
getStartreeIndexForSegmentColumns(SegmentDataManager segmentDataManager) {
+ List<Map<String, Object>> startreeDetails = new ArrayList<>();
+
+ if (segmentDataManager instanceof ImmutableSegmentDataManager) {
+ ImmutableSegmentDataManager immutableSegmentDataManager =
(ImmutableSegmentDataManager) segmentDataManager;
+
+ ImmutableSegment immutableSegment =
immutableSegmentDataManager.getSegment();
+
+ if (immutableSegment instanceof ImmutableSegmentImpl) {
+ List<StarTreeV2> starTrees = immutableSegment.getStarTrees();
+
+ if (starTrees == null) {
+ return startreeDetails;
+ }
+
+ startreeDetails = getImmutableSegmentStartreeIndexes(starTrees);
+ }
+ }
+ return startreeDetails;
+ }
+
+ /**
+ * Helper to loop over star trees of a segment to create a map containing
star tree details.
+ */
+ private static List<Map<String, Object>>
getImmutableSegmentStartreeIndexes(List<StarTreeV2> starTrees){
+ List<Map<String, Object>> startreeDetails = new ArrayList<>();
+ for (StarTreeV2 starTree : starTrees) {
+ StarTreeV2Metadata starTreeMetadata = starTree.getMetadata();
+
+ Map<String, Object> starTreeIndexMap = new LinkedHashMap<>();
+
+ List<String> starTreeDimensions =
starTreeMetadata.getDimensionsSplitOrder();
+ starTreeIndexMap.put(STAR_TREE_DIMENSION_COLUMNS, starTreeDimensions);
+
+ List<Map<String, String>> starTreeMetricAggregations = new ArrayList<>();
+ Set<AggregationFunctionColumnPair> functionColumnPairs =
starTreeMetadata.getFunctionColumnPairs();
+ for (AggregationFunctionColumnPair functionColumnPair :
functionColumnPairs) {
Review comment:
This is done.
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