Saisai Shao created SPARK-15443:
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Summary: Properly explain the streaming queries
Key: SPARK-15443
URL: https://issues.apache.org/jira/browse/SPARK-15443
Project: Spark
Issue Type: Bug
Components: SQL, Streaming
Affects Versions: 2.0.0
Reporter: Saisai Shao
Priority: Minor
Currently when called `explain()` on streaming dataset, it will only get the
parsed logical plan and exceptions for optimized logical plan and physical
plan, like below:
{code}
scala> res0.explain(true)
== Parsed Logical Plan ==
FileSource[file:///tmp/input]
== Analyzed Logical Plan ==
value: string
FileSource[file:///tmp/input]
== Optimized Logical Plan ==
org.apache.spark.sql.AnalysisException: Queries with streaming sources must be
executed with write.startStream();
== Physical Plan ==
org.apache.spark.sql.AnalysisException: Queries with streaming sources must be
executed with write.startStream();
{code}
The reason is that structure streaming dynamically materialize the plan in the
run-time.
So here we should figure out a way to properly get the streaming plan.
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