cryptoe commented on code in PR #18233:
URL: https://github.com/apache/druid/pull/18233#discussion_r2199833206
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processing/src/main/java/org/apache/druid/segment/incremental/OnheapIncrementalIndex.java:
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@@ -143,6 +144,9 @@ private void initializeProjections(IncrementalIndexSchema
incrementalIndexSchema
// initialize them all with 0 rows
AggregateProjectionMetadata.Schema schema =
projectionSpec.toMetadataSchema();
aggregateProjections.add(new AggregateProjectionMetadata(schema, 0));
+ if (projections.containsKey(projectionSpec.getName())) {
+ throw new IAE("Found duplicate projection name[%s].",
projectionSpec.getName());
Review Comment:
Style:nit this should be a druid exception. This might be a user error so we
might need to add a better exception message saying remove the projection and
try to resubmit the ingestion job.
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