imback82 commented on a change in pull request #29328:
URL: https://github.com/apache/spark/pull/29328#discussion_r473566629
##########
File path: docs/sql-migration-guide.md
##########
@@ -36,6 +36,8 @@ license: |
- In Spark 3.1, NULL elements of structures, arrays and maps are converted
to "null" in casting them to strings. In Spark 3.0 or earlier, NULL elements
are converted to empty strings. To restore the behavior before Spark 3.1, you
can set `spark.sql.legacy.castComplexTypesToString.enabled` to `true`.
+ - In Spark 3.1, when loading a dataframe, `path` option cannot coexist with
`load()`'s path parameters. For example,
`spark.read.format("csv").option("path", "/tmp").load("/tmp2")` or
`spark.read.option("path", "/tmp").csv("/tmp2")` will throw
`org.apache.spark.sql.AnalysisException`. In Spark version 3.0 and below,
`path` option is overwritten if one path parameter is passed to `load()`, or
`path` option is added to the overall paths if multiple path parameters are
passed to `load()`.
Review comment:
I added `paths` as well.
##########
File path: docs/sql-migration-guide.md
##########
@@ -36,6 +36,8 @@ license: |
- In Spark 3.1, NULL elements of structures, arrays and maps are converted
to "null" in casting them to strings. In Spark 3.0 or earlier, NULL elements
are converted to empty strings. To restore the behavior before Spark 3.1, you
can set `spark.sql.legacy.castComplexTypesToString.enabled` to `true`.
+ - In Spark 3.1, when loading a dataframe, `path` option cannot coexist with
`load()`'s path parameters. For example,
`spark.read.format("csv").option("path", "/tmp").load("/tmp2")` or
`spark.read.option("path", "/tmp").csv("/tmp2")` will throw
`org.apache.spark.sql.AnalysisException`. In Spark version 3.0 and below,
`path` option is overwritten if one path parameter is passed to `load()`, or
`path` option is added to the overall paths if multiple path parameters are
passed to `load()`.
Review comment:
I mentioned `paths` as well.
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