[jira] [Created] (SPARK-18390) Optimized plan tried to use Cartesian join when it is not enabled

["Xiangrui Meng (JIRA)" <ji...@apache.org>]

Xiangrui Meng created SPARK-18390:
-------------------------------------

             Summary: Optimized plan tried to use Cartesian join when it is not enabled
                 Key: SPARK-18390
                 URL: https://issues.apache.org/jira/browse/SPARK-18390
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.0.1
            Reporter: Xiangrui Meng


{code}
val df2 = spark.range(1e9.toInt).withColumn("one", lit(1))
val df3 = spark.range(1e9.toInt)
df3.join(df2, df3("id") === df2("one")).count()
{code}

throws

{noformat}
org.apache.spark.sql.AnalysisException: Cartesian joins could be prohibitively expensive and are disabled by default. To explicitly enable them, please set spark.sql.crossJoin.enabled = true;
{noformat}

This is probably not the right behavior because it was not the user who suggested using cartesian product. SQL picked it while knowing it is not enabled.



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