FrankChen021 commented on code in PR #20173:
URL: https://github.com/apache/druid/pull/20173#discussion_r3889566309
##########
indexing-service/src/main/java/org/apache/druid/indexing/common/task/batch/parallel/PartialSegmentMergeTask.java:
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@@ -295,13 +296,17 @@ private DataSegmentsWithSchemas mergeAndPushSegments(
), "version for interval[%s]", interval),
0
);
+ try (QueryableIndex index =
toolbox.getIndexIO().loadIndex(mergedFileAndDimensionNames.lhs)) {
Review Comment:
`BatchAppenderator` provides precedent, but it loads the index because it
also needs dimensions and cluster metadata. This new code loads it only for the
row count.
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