HyukjinKwon commented on a change in pull request #26227:
[SPARK-29444][FOLLOWUP] add doc and python parameter for ignoreNullFields in
json generating
URL: https://github.com/apache/spark/pull/26227#discussion_r338405153
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala
##########
@@ -1189,9 +1189,10 @@ object SQLConf {
val JSON_GENERATOR_IGNORE_NULL_FIELDS =
buildConf("spark.sql.jsonGenerator.ignoreNullFields")
- .doc("If false, JacksonGenerator will generate null for null fields in
Struct.")
- .stringConf
- .createWithDefault("true")
+ .doc("Whether to ignore null fields in column/struct during json
generating. " +
Review comment:
I would just write like this:
```
Whether to ignore null fields when generating JSON objects in JSON data
source and
JSON functions such as to_json.
If false, it generates null for null fields in JSON objects.
```
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