dongjoon-hyun commented on a change in pull request #1205:
URL: https://github.com/apache/iceberg/pull/1205#discussion_r454735418
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File path: site/docs/spark.md
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@@ -432,6 +444,13 @@ Spark 3 introduced the new `DataFrameWriterV2` API for
writing to tables using d
- `df.writeTo(t).append()` is equivalent to `INSERT INTO`
- `df.writeTo(t).overwritePartitions()` is equivalent to dynamic `INSERT
OVERWRITE`
+The v1 DataFrame `write` API is still supported, but is not recommended.
+
+!!! Warning
+ When writing with the v1 DataFrame API in Spark 3, use `saveAsTable` or
`insertInto` to load tables with a catalog.
+ Using `format("iceberg")` loads an isolated table reference that will not
automatically refresh tables used by queries.
Review comment:
Thanks, @rdblue !
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