menghaoranss opened a new issue #12492:
URL: https://github.com/apache/shardingsphere/issues/12492
For current logic, after MetaData is refreshed, the complete
`ShardingSphereSchema` will be posted, however, only the MetaData of some
tables has been modified for `DDL`, therefore, only the TableMetaData of the
part tables needs to be posted.
```
private void refresh(final SQLStatement sqlStatement, final
Collection<String> logicDataSourceNames, final Collection<MetadataRefresher>
refreshers) throws SQLException {
for (MetadataRefresher each : refreshers) {
if (each instanceof SchemaRefresher) {
((SchemaRefresher) each).refresh(schemaMetadata,
logicDataSourceNames, sqlStatement, materials.getProps());
}
if (each instanceof FederateRefresher) {
((FederateRefresher) each).refresh(federateMetadata,
logicDataSourceNames, sqlStatement, materials);
}
}
ShardingSphereEventBus.getInstance().post(new
SchemaAlteredEvent(schemaMetadata.getName(), schemaMetadata.getSchema()));
}
```
- [ ] Rename `MetadataRefreshEngine` to `MetaDataRefreshEngine`
- [ ] Split `SchemaAlteredEvent` into `TableAddedEvent` ,`TableAlteredEvent`
and `TableDroppedEvent`
- [ ] Refactor `SchemaMetaDataRegistrySubscriber` to support partial update
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