gianm commented on code in PR #17170:
URL: https://github.com/apache/druid/pull/17170#discussion_r1887579340
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server/src/main/java/org/apache/druid/segment/realtime/appenderator/SinkQuerySegmentWalker.java:
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@@ -193,6 +205,12 @@ public <T> QueryRunner<T> getQueryRunnerForSegments(final
Query<T> query, final
final List<SinkSegmentReference> allSegmentReferences = new ArrayList<>();
final Map<SegmentDescriptor, SegmentId> segmentIdMap = new HashMap<>();
final LinkedHashMap<SegmentDescriptor, List<QueryRunner<T>>> allRunners =
new LinkedHashMap<>();
+ final ConcurrentHashMap<String, ConcurrentHashMap<String, AtomicLong>>
segmentMetricsAccumulator = new ConcurrentHashMap<>();
Review Comment:
The performance looks to be within the margin of error. IMO, it's ok to
leave it as a Map. Thanks for checking.
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