Jackie-Jiang commented on a change in pull request #7374:
URL: https://github.com/apache/pinot/pull/7374#discussion_r699583525
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File path:
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java
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@@ -1094,6 +1086,24 @@ public void updateSchema(Schema schema, boolean reload)
}
}
+ /**
+ * Helper method to update the schema, or throw
SchemaBackwardIncompatibleException when the new schema is not
+ * backward-compatible with the existing schema.
+ */
+ private void updateSchema(Schema schema, Schema oldSchema)
+ throws SchemaBackwardIncompatibleException {
+ schema.updateBooleanFieldsIfNeeded(oldSchema);
+ if (schema.equals(oldSchema)) {
+ LOGGER.info("New schema: {} is the same as the existing schema, not
updating it", schema.getSchemaName());
+ return;
+ }
+ if (!schema.isBackwardCompatibleWith(oldSchema)) {
+ throw new SchemaBackwardIncompatibleException(
+ String.format("New schema: %s is not backward-compatible with the
existing schema", schema.getSchemaName()));
Review comment:
We can change the `schema.isBackwardCompatibleWith()` to throw exception
instead of returning a boolean. This is out of the scope of this PR, so added
to TODO to track that
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