Github user jose-torres commented on a diff in the pull request:
https://github.com/apache/spark/pull/20752#discussion_r172627199
--- Diff:
sql/core/src/main/java/org/apache/spark/sql/sources/v2/writer/streaming/StreamWriter.java
---
@@ -27,6 +28,9 @@
*
* Streaming queries are divided into intervals of data called epochs,
with a monotonically
* increasing numeric ID. This writer handles commits and aborts for each
successive epoch.
+ *
+ * Note that StreamWriter implementations should provide instances of
+ * {@link StreamingDataWriterFactory}.
--- End diff --
I'm broadly supportive. I'll detail my thoughts in the jira.
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