wuchong commented on code in PR #2416:
URL: https://github.com/apache/fluss/pull/2416#discussion_r2711847056
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fluss-common/src/main/java/org/apache/fluss/metadata/Schema.java:
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@@ -285,18 +285,21 @@ private Builder() {
/** Adopts all members from the given schema. */
public Builder fromSchema(Schema schema) {
- columns.addAll(schema.columns);
- if (schema.primaryKey != null) {
- primaryKeyNamed(schema.primaryKey.constraintName,
schema.primaryKey.columnNames);
- }
- if (schema.autoIncrementColumnNames != null
- && !schema.autoIncrementColumnNames.isEmpty()) {
- checkState(
- schema.autoIncrementColumnNames.size() == 1,
- "Multiple auto increment columns are not supported
yet.");
- enableAutoIncrement(schema.autoIncrementColumnNames.get(0));
- }
- this.highestFieldId = new AtomicInteger(schema.highestFieldId);
+ // 1. Clear current builder state
+ this.columns.clear();
+ this.autoIncrementColumnNames.clear();
+ this.primaryKey = null;
Review Comment:
I think it's better make sure the `fromSchema` is the first API to be called
on the builder, rather than silently dropping previous columns. Otherwise, it's
hard to debug the problem. You can validate all the members should be empty.
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