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Date: Fri, 14 Jul 2017 04:19:00 +0000 (UTC)
From: "Hyukjin Kwon (JIRA)" <jira@apache.org>
To: issues@spark.apache.org
Message-ID: <JIRA.13087083.1500005566000.245371.1500005940118@Atlassian.JIRA>
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References: <JIRA.13087083.1500005566000@Atlassian.JIRA> <JIRA.13087083.1500005566043@jira-lw-us.apache.org>
Subject: [jira] [Updated] (SPARK-21413) Multiple projections with CASE WHEN
 fails to execute generated codes
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archived-at: Fri, 14 Jul 2017 04:19:10 -0000


     [ https://issues.apache.org/jira/browse/SPARK-21413?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyukjin Kwon updated SPARK-21413:
---------------------------------
    Summary: Multiple projections with CASE WHEN fails to execute generated codes  (was: Multiple projections with CASE WHEN fails to generate codes)

> Multiple projections with CASE WHEN fails to execute generated codes
> --------------------------------------------------------------------
>
>                 Key: SPARK-21413
>                 URL: https://issues.apache.org/jira/browse/SPARK-21413
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.3.0
>            Reporter: Hyukjin Kwon
>
> Scala codes to reproduce
> {code}
> import org.apache.spark.sql.functions._
> import org.apache.spark.sql.types._
> import org.apache.spark.sql.Row
> val schema = StructType(StructField("fieldA", IntegerType) :: Nil)
> var df = spark.createDataFrame(spark.sparkContext.parallelize(Seq(Row(1))), schema)
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df.show()
> {code}
> Note that, I could not reproduce this with local relation.
> {code}
> import org.apache.spark.sql.functions._
> var df = Seq(1).toDF("fieldA")
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df = df.withColumn("fieldA", when($"fieldA" === 0, null).otherwise($"fieldA"))
> df.show()
> {code}
> Calling {{explain()}} on the dataframe in the former case shows a huge case-when projection and {{show()}} fails with the exception as below:
> {code}
> ...
> Caused by: org.codehaus.janino.JaninoRuntimeException: Code of method "apply_0$(Lorg/apache/spark/sql/catalyst/expressions/GeneratedClass$SpecificUnsafeProjection;Lorg/apache/spark/sql/catalyst/InternalRow;)V" of class "org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection" grows beyond 64 KB
>   at org.codehaus.janino.CodeContext.makeSpace(CodeContext.java:949)
>   at org.codehaus.janino.CodeContext.write(CodeContext.java:839)
>   at org.codehaus.janino.UnitCompiler.writeOpcode(UnitCompiler.java:11081)
>   at org.codehaus.janino.UnitCompiler.pushConstant(UnitCompiler.java:9674)
>   at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java:4911)
>   at org.codehaus.janino.UnitCompiler.access$7700(UnitCompiler.java:206)
>   at org.codehaus.janino.UnitCompiler$12.visitIntegerLiteral(UnitCompiler.java:3776)
> ...
> {code}


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