Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/20369#discussion_r164025211
--- Diff:
sql/core/src/main/java/org/apache/spark/sql/sources/v2/streaming/writer/StreamWriter.java
---
@@ -37,8 +41,28 @@
*/
void commit(long epochId, WriterCommitMessage[] messages);
--- End diff --
shall we also document the requirement about idempotentï¼
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