tarun11Mavani commented on code in PR #18710:
URL: https://github.com/apache/pinot/pull/18710#discussion_r3421350116
##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/utils/TableConfigUtils.java:
##########
@@ -1603,6 +1604,23 @@ private static void
validateIndexingConfigAndFieldConfigList(TableConfig tableCo
validateMultiColumnTextIndex(indexingConfig.getMultiColumnTextIndexConfig());
+ // OPEN_STRUCT materialized child columns use a reserved separator '$' in
their name. When any
+ // schema field is OPEN_STRUCT, reject user columns whose names contain
'$' to prevent naming
+ // collisions with future per-key materialized columns (col$key) or the
sparse column
+ // (col$__sparse__). This validation runs here (with full schema access)
rather than per-field
+ // because each OpenStructIndexType.validate() call only sees one field at
a time.
+ boolean anyOpenStruct = schema.getAllFieldSpecs().stream()
+ .anyMatch(fs -> fs.getDataType() == DataType.OPEN_STRUCT);
+ if (anyOpenStruct) {
+ for (FieldSpec fieldSpec : schema.getAllFieldSpecs()) {
+ Preconditions.checkState(
+ fieldSpec.getDataType() == DataType.OPEN_STRUCT
Review Comment:
fixed this.
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