Jackie-Jiang commented on code in PR #10905:
URL: https://github.com/apache/pinot/pull/10905#discussion_r1239394345
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/startree/v2/builder/MultipleTreesBuilder.java:
##########
@@ -81,9 +84,10 @@ public MultipleTreesBuilder(List<StarTreeV2BuilderConfig>
builderConfigs, File i
_builderConfigs = builderConfigs;
_buildMode = buildMode;
_segmentDirectory = SegmentDirectoryPaths.findSegmentDirectory(indexDir);
+ _indexDirectory = indexDir;
_metadataProperties =
CommonsConfigurationUtils.fromFile(new File(_segmentDirectory,
V1Constants.MetadataKeys.METADATA_FILE_NAME));
-
Preconditions.checkState(!_metadataProperties.containsKey(MetadataKey.STAR_TREE_COUNT),
"Star-tree already exists");
+ _existingStarTrees = getExistingStarTrees();
Review Comment:
Oh I see the point. Basically we need to first move the existing files into
a temporary location, then delete it when the new trees are created
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