Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/15975#discussion_r89087942 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JDBCRelation.scala --- @@ -137,7 +137,8 @@ private[sql] case class JDBCRelation( } override def toString: String = { + val partitioningInfo = if (parts.nonEmpty) s" [numPartitions=${parts.length}]" // credentials should not be included in the plan output, table information is sufficient. - s"JDBCRelation(${jdbcOptions.table})" + s"JDBCRelation(${jdbcOptions.table})" + partitioningInfo --- End diff -- If parts is empty, this string looks weird like "JDBCRelation(.....)()" as I tried locally.
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