public Builder clearSize() {
        bitField0_ = (bitField0_ & ~0x00000800);
        size_ = 0L;
        onChanged();
        return this;
      }
<code>optional string ddlSchemaName = 15;</code>

<pre>
* current ddl schemaName *
</pre>
node/etl/src/main/java/com/alibaba/otter/node/etl/model/protobuf/BatchProto.java