navina commented on code in PR #18984:
URL: https://github.com/apache/pinot/pull/18984#discussion_r3581906643
##########
pinot-spi/src/main/java/org/apache/pinot/spi/data/FieldSpec.java:
##########
@@ -172,6 +172,14 @@ public enum MaxLengthExceedStrategy {
@Nullable
protected List<String> _aliases;
+ // Optional, free-form per-column metadata. It is additive, excluded from
backward-compatibility
+ // checks, and omitted from serialization when unset/empty. The keys and
their interpretation are
+ // defined by whoever populates it; the core schema attaches no semantics to
it.
+ @JsonProperty("extraMetadata")
Review Comment:
Done — renamed the property (and getter/setter) to `metadata`.
##########
pinot-spi/src/main/java/org/apache/pinot/spi/data/FieldSpec.java:
##########
@@ -270,6 +278,15 @@ public void setAliases(@Nullable List<String> aliases) {
_aliases = aliases == null || aliases.isEmpty() ? null : aliases;
}
+ @Nullable
+ public Map<String, String> getExtraMetadata() {
+ return _extraMetadata;
+ }
+
+ public void setExtraMetadata(@Nullable Map<String, String> extraMetadata) {
+ _extraMetadata = extraMetadata == null || extraMetadata.isEmpty() ? null :
extraMetadata;
Review Comment:
Done. `setMetadata` uses `MapUtils.isEmpty` (it holds a `Map`); `setTags`
and `setAliases` now use `CollectionUtils.isEmpty` for consistency.
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