Reactive spark reader
Given a spark object, returns a reactive data source for the contents of the spark object. This function is most useful to read Spark streams.
reactiveSpark(x, intervalMillis = 1000, session = NULL)
x |
An object coercable to a Spark DataFrame. |
intervalMillis |
Approximate number of milliseconds to wait to retrieve updated data frame. This can be a numeric value, or a function that returns a numeric value. |
session |
The user session to associate this file reader with, or NULL if none. If non-null, the reader will automatically stop when the session ends. |
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