yyanyy commented on a change in pull request #2096:
URL: https://github.com/apache/iceberg/pull/2096#discussion_r568292231
##########
File path: api/src/main/java/org/apache/iceberg/Schema.java
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@@ -328,6 +329,24 @@ private Schema internalSelect(Collection<String> names,
boolean caseSensitive) {
return TypeUtil.select(this, selected);
}
+ @Override
+ public boolean equals(Object other) {
+ if (this == other) {
+ return true;
+ } else if (!(other instanceof Schema)) {
+ return false;
+ }
+
+ Schema that = (Schema) other;
+ return struct.equals(that.struct) &&
+ Objects.equals(aliasToId, that.aliasToId);
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(struct, aliasToId);
+ }
Review comment:
In the new change I introduced, we can reuse the old schema ID during
schema update, if the exact same schema already exists in the schema list. I
think in this case we may need to confirm both schemas' aliases should be the
same? Or do you think there shouldn't be a case when schema are the same while
aliases are not?
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