Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/22938#discussion_r232550860 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/json/JsonSuite.scala --- @@ -1813,6 +1817,7 @@ class JsonSuite extends QueryTest with SharedSQLContext with TestJsonData { val path = dir.getCanonicalPath primitiveFieldAndType .toDF("value") + .repartition(1) --- End diff -- why is the `repartition` required?
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