org.apache.spark.sql.streaming.StreamingQueryListener
An unique query id that persists across restarts.
An unique query id that persists across restarts. See StreamingQuery.id().
User-specified name of the query, null if not specified.
A query id that is unique for every start/restart.
A query id that is unique for every start/restart. See StreamingQuery.runId().
:: Experimental :: Event representing the start of a query
2.1.0