Jochen Niebuhr created SPARK-21651:
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Summary: Detect MapType in Json InferSchema
Key: SPARK-21651
URL: https://issues.apache.org/jira/browse/SPARK-21651
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 2.2.0, 2.1.1, 2.1.0
Reporter: Jochen Niebuhr
Priority: Minor
When loading Json Files which include a map with very variable keys, the
current schema infer logic might create a very large schema. This will lead to
long load times and possibly out of memory errors.
I've already submitted a pull request to the mongo spark driver which had a
similar problem. Should I port this logic over to the json schema infer class?
The MongoDB Spark pull request mentioned is:
https://github.com/mongodb/mongo-spark/pull/24
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