Database Reference
In-Depth Information
The Job DAG (directed acyclical graph) tab is interesting because it shows both the structure and the state of the
job's actions. Figures
5-8
and 5-9 provide examples of Oozie DAGs. Figure
5-8
has no state or colors shown on it; it is a
job that has been submitted but not run. However, the DAG contains enough detail so that you can read the labels. It
shows the pig-manufacturer and pig-model tasks running in parallel. The triangular pig-fork and pig-join nodes split
the streams of processing. The Hive-based functionality is organized in the same manner, with the manufacturer and
model Hive tasks running in parallel. The workflow begins with a start node and terminates at an end node.
Figure 5-8.
Oozie job DAG with no state information
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