Why will an exception be thrown when the schema does not exist?

[sunxiaojian]

Whether an independent interface is provided to check whether the schema exists

Server：

client:

[humkum]

I may not understand your request, but I found that if there didn't throw an exception. It would cause NPE in GetSchemaResponse constructor as follows:

public GetSchemaResponse(QualifiedName name, SchemaRecordInfo schemaRecordInfo) {
        this.subjectFullName = name.subjectFullName();
        this.schemaFullName = schemaRecordInfo.getSchema();
        this.recordId = CommonUtil.getSchemaRecordId(schemaRecordInfo.getSchemaId(),
            schemaRecordInfo.getVersion());
        this.idl = schemaRecordInfo.getIdl();
        this.dependency = schemaRecordInfo.getDependency();
        this.type = schemaRecordInfo.getType();
        this.fields = parse(idl);
    }

[ni-ze]

@humkum, IMO, If the result is empty, return null, or empty list is recommended. We will not construct a GetSchemaResponse with this constructor.