presto-thrift/src/main/java/io/prestosql/plugin/thrift/ThriftIndexPageSource.java/RunningSplitContext/RunningSplitContext
class RunningSplitContext:        public RunningSplitContext(PrestoThriftService client, PrestoThriftSplit split)
        {
            this.client = client;
            this.split = split;
        }