graph G {
    compound="true"
    rankdir="TB"
    bgcolor="white"
    fontname="Tahoma"

    node [
        fixedsize="false"
        fontname="Tahoma"
        color="white"
        fillcolor="deepskyblue2"
        fontcolor="black"
        shape="box"
        style="filled"
        penwidth="1.0"
    ]
    edge [
        fontname="Arial"
        color="#00688b"
        fontcolor="black"
        fontsize="12"
        arrowsize="0.5"
        penwidth="1.0"
    ]




    "parquet-hadoop" -- "parquet-hadoop" [label=" 7 ", penwidth="7", color="#a0a0a0C9"];
    "parquet-hadoop" -- "parquet-column" [label=" 6 ", penwidth="6", color="#00688bB7"];
    "parquet-column" -- "parquet-column" [label=" 5 ", penwidth="5", color="#a0a0a0A5"];
    "parquet-format-structures" -- "parquet-hadoop" [label=" 2 ", penwidth="2", color="#00688b70"];
    "parquet-variant" -- "parquet-variant" [label=" 2 ", penwidth="2", color="#a0a0a070"];
    "parquet-avro" -- "parquet-avro" [label=" 2 ", penwidth="2", color="#a0a0a070"];
    "parquet-thrift" -- "parquet-thrift" [label=" 1 ", penwidth="1", color="#a0a0a05E"];
    "parquet-column" -- "parquet-cli" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "parquet-cli" -- "parquet-cli" [label=" 1 ", penwidth="1", color="#a0a0a05E"];
    "parquet-format-structures" -- "parquet-column" [label=" 1 ", penwidth="1", color="#00688b5E"];

}