dot stuff

gistfile1.txt

Simple:

digraph G {
    rankdir = BT
    node [shape = "box"]

    HDFS -> Event -> Schema
}

More complex:

digraph G {
    subgraph SequenceFile {
        rankdir = BT

        "file" [
            label = "Header|<f1>Record|Record|Sync|Record|Record|Record|Sync|Record"
            shape = "record"
        ];

        "record" [
            label = "<f1>Key length (5)|Serialized event length|TBooleanWritable(true)|Event#getData()"
            shape = "record"
        ];

        "recordcompressed" [
            label = "Number of pairs (uncompressed)|Size of the keys (compressed)|Keys (compressed)|Size of the events (compressed)|Events (compressed)"
            shape = "record"
        ];

        file:f1 -> record:f1 [arrowhead = dot]
        record -> recordcompressed
    }
}

With style:

digraph g {
    "tevent_writer" [
        label = "{ThresholdEventWriter| |<f1>write (Event) : void\l|<f2>commit (event) : void\l}"
        shape = "record"
    ];
    
    "disk_writer" [
        label = "{DiskSpoolEventWriter| |<f1>write (Event) : void\l|<f2>commit (event) : void\l|<f3>flushToPersistentWriter () : void\l}"
        shape = "record"
    ];
    
    "hadoop_writer" [
        label = "{HadoopFileEventWriter| |<f1>write (Event) : void\l|<f2>commit (event) : void\l|<f3>forceCommit () : void\l}"
        shape = "record"
    ];
    
    disk_writer:f3 -> hadoop_writer:f1 [arrowhead = dot, label = "ScheduledExecutorService (corePoolSize = maximumPoolSize = 2)"]
    disk_writer:f3 -> hadoop_writer:f3 [arrowhead = dot]
}