HyukjinKwon commented on code in PR #46189:
URL: https://github.com/apache/spark/pull/46189#discussion_r1577575597
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python/pyspark/sql/dataframe.py:
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@@ -4671,13 +4672,20 @@ def observe(
... def onQueryTerminated(self, event):
... pass
...
- >>> spark.streams.addListener(MyErrorListener())
+ >>> error_listener = MyErrorListener()
+ >>> spark.streams.addListener(error_listener)
+ >>> sdf = spark.readStream.format("rate").load().withColumn(
+ ... "error", col("value")
+ ... )
>>> # Observe row count (rc) and error row count (erc) in the
streaming Dataset
- ... observed_ds = df.observe(
+ ... observed_ds = sdf.observe(
... "my_event",
... count(lit(1)).alias("rc"),
- ... count(col("error")).alias("erc")) # doctest: +SKIP
- >>> observed_ds.writeStream.format("console").start() # doctest: +SKIP
+ ... count(col("error")).alias("erc"))
+ >>> q = observed_ds.writeStream.format("console").start()
+ >>> time.sleep(5)
+ >>> q.stop()
Review Comment:
Actually shall we put this in finally
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