[jira] [Comment Edited] (SPARK-18016) Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
[
https://issues.apache.org/jira/browse/SPARK-18016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16345551#comment-16345551
]
Kazuaki Ishizaki edited comment on SPARK-18016 at 1/30/18 6:27 PM:
---
[~gaurav.garg] Thank you for your confirmation. I am running a program that has
{{Statistics.corr(vec, "pearson")}}. It takes some time until the program stops.
I would appreciate it if you could share a log file that includes the generated
Java code.
was (Author: kiszk):
[~gaurav.garg] Thank you for your confirmation. I am running a program that has
\{{Statistics.corr(vec, "pearson"})}}. It takes some time until the program
stops.
I would appreciate it if you could share a log file that includes the generated
Java code.
> Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
> -
>
> Key: SPARK-18016
> URL: https://issues.apache.org/jira/browse/SPARK-18016
> Project: Spark
> Issue Type: Bug
> Components: SQL
>Affects Versions: 2.1.0
>Reporter: Aleksander Eskilson
>Assignee: Kazuaki Ishizaki
>Priority: Major
> Fix For: 2.3.0
>
>
> When attempting to encode collections of large Java objects to Datasets
> having very wide or deeply nested schemas, code generation can fail, yielding:
> {code}
> Caused by: org.codehaus.janino.JaninoRuntimeException: Constant pool for
> class
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
> has grown past JVM limit of 0x
> at
> org.codehaus.janino.util.ClassFile.addToConstantPool(ClassFile.java:499)
> at
> org.codehaus.janino.util.ClassFile.addConstantNameAndTypeInfo(ClassFile.java:439)
> at
> org.codehaus.janino.util.ClassFile.addConstantMethodrefInfo(ClassFile.java:358)
> at
> org.codehaus.janino.UnitCompiler.writeConstantMethodrefInfo(UnitCompiler.java:4)
> at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java:4547)
> at org.codehaus.janino.UnitCompiler.access$7500(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3774)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3762)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compileGet(UnitCompiler.java:3762)
> at
> org.codehaus.janino.UnitCompiler.compileGetValue(UnitCompiler.java:4933)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:3180)
> at org.codehaus.janino.UnitCompiler.access$5000(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3151)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3139)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:3139)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:2112)
> at org.codehaus.janino.UnitCompiler.access$1700(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1377)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1370)
> at org.codehaus.janino.Java$ExpressionStatement.accept(Java.java:2558)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:1370)
> at
> org.codehaus.janino.UnitCompiler.compileStatements(UnitCompiler.java:1450)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:2811)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1262)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1234)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:538)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:890)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:894)
> at org.codehaus.janino.UnitCompiler.access$600(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$2.visitMemberClassDeclaration(UnitCompiler.java:377)
> at
> org.codehaus.janino.UnitCompiler$2.visitMemberClassDeclaration(UnitCompiler.java:369)
> at
> org.codehaus.janino.Java$MemberClassDeclaration.accept(Java.java:1128)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:369)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMemberTypes(UnitCompiler.java:1209)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:564)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:420)
> at
[jira] [Comment Edited] (SPARK-18016) Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
[
https://issues.apache.org/jira/browse/SPARK-18016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16342949#comment-16342949
]
Gaurav Garg edited comment on SPARK-18016 at 1/30/18 12:48 PM:
---
Thanks [~kiszk], this code works fine with me also. But when I tried creating
correlation matrix, throws constant pool exception, using the following code
after creating vector of the wide dataframe
Statistics.corr(vec, {color:#008000}"pearson"{color})
[~kiszk], Shall I share you my log file for the same?
was (Author: gaurav.garg):
It also throws the same "*constant pool*" exception when creating correlation
matrix of these wide Dataframes. :( using the following code.
I have converted these dataframes into vector and then tried calculating its
correlation matrices
Statistics.corr(vec, {color:#008000}"pearson"{color})
> Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
> -
>
> Key: SPARK-18016
> URL: https://issues.apache.org/jira/browse/SPARK-18016
> Project: Spark
> Issue Type: Bug
> Components: SQL
>Affects Versions: 2.1.0
>Reporter: Aleksander Eskilson
>Assignee: Kazuaki Ishizaki
>Priority: Major
> Fix For: 2.3.0
>
>
> When attempting to encode collections of large Java objects to Datasets
> having very wide or deeply nested schemas, code generation can fail, yielding:
> {code}
> Caused by: org.codehaus.janino.JaninoRuntimeException: Constant pool for
> class
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
> has grown past JVM limit of 0x
> at
> org.codehaus.janino.util.ClassFile.addToConstantPool(ClassFile.java:499)
> at
> org.codehaus.janino.util.ClassFile.addConstantNameAndTypeInfo(ClassFile.java:439)
> at
> org.codehaus.janino.util.ClassFile.addConstantMethodrefInfo(ClassFile.java:358)
> at
> org.codehaus.janino.UnitCompiler.writeConstantMethodrefInfo(UnitCompiler.java:4)
> at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java:4547)
> at org.codehaus.janino.UnitCompiler.access$7500(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3774)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3762)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compileGet(UnitCompiler.java:3762)
> at
> org.codehaus.janino.UnitCompiler.compileGetValue(UnitCompiler.java:4933)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:3180)
> at org.codehaus.janino.UnitCompiler.access$5000(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3151)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3139)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:3139)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:2112)
> at org.codehaus.janino.UnitCompiler.access$1700(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1377)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1370)
> at org.codehaus.janino.Java$ExpressionStatement.accept(Java.java:2558)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:1370)
> at
> org.codehaus.janino.UnitCompiler.compileStatements(UnitCompiler.java:1450)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:2811)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1262)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1234)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:538)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:890)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:894)
> at org.codehaus.janino.UnitCompiler.access$600(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$2.visitMemberClassDeclaration(UnitCompiler.java:377)
> at
> org.codehaus.janino.UnitCompiler$2.visitMemberClassDeclaration(UnitCompiler.java:369)
> at
> org.codehaus.janino.Java$MemberClassDeclaration.accept(Java.java:1128)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:369)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMemberTypes(UnitCompiler.java:1209)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:564)
> at
[jira] [Comment Edited] (SPARK-18016) Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
[
https://issues.apache.org/jira/browse/SPARK-18016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16336957#comment-16336957
]
Kazuaki Ishizaki edited comment on SPARK-18016 at 1/24/18 5:49 AM:
---
I cannot reproduce this issue using the following program with the master
branch. Do I make any mistake?
{code:java}
test("SPARK-18016") {
withSQLConf("spark.sql.pivotMaxValues" -> "20") {
val df = (1 to 9).map(i => (i.toString, i.toString)).toDF("col1",
"col2")
val df2 = df
.groupBy("col1")
.pivot("col2")
.agg(count("col2"))
.na.fill(0)
.drop("col1")
val c = df2.count
print(s"c = $c\n")
}
}{code}
was (Author: kiszk):
I cannot reproduce this issue using the following program with the master
branch.
{code:java}
test("SPARK-18016") {
withSQLConf("spark.sql.pivotMaxValues" -> "20") {
val df = (1 to 9).map(i => (i.toString, i.toString)).toDF("col1",
"col2")
val df2 = df
.groupBy("col1")
.pivot("col2")
.agg(count("col2"))
.na.fill(0)
.drop("col1")
val c = df2.count
print(s"c = $c\n")
}
}{code}
> Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
> -
>
> Key: SPARK-18016
> URL: https://issues.apache.org/jira/browse/SPARK-18016
> Project: Spark
> Issue Type: Bug
> Components: SQL
>Affects Versions: 2.1.0
>Reporter: Aleksander Eskilson
>Assignee: Kazuaki Ishizaki
>Priority: Major
> Fix For: 2.3.0
>
>
> When attempting to encode collections of large Java objects to Datasets
> having very wide or deeply nested schemas, code generation can fail, yielding:
> {code}
> Caused by: org.codehaus.janino.JaninoRuntimeException: Constant pool for
> class
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
> has grown past JVM limit of 0x
> at
> org.codehaus.janino.util.ClassFile.addToConstantPool(ClassFile.java:499)
> at
> org.codehaus.janino.util.ClassFile.addConstantNameAndTypeInfo(ClassFile.java:439)
> at
> org.codehaus.janino.util.ClassFile.addConstantMethodrefInfo(ClassFile.java:358)
> at
> org.codehaus.janino.UnitCompiler.writeConstantMethodrefInfo(UnitCompiler.java:4)
> at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java:4547)
> at org.codehaus.janino.UnitCompiler.access$7500(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3774)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3762)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compileGet(UnitCompiler.java:3762)
> at
> org.codehaus.janino.UnitCompiler.compileGetValue(UnitCompiler.java:4933)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:3180)
> at org.codehaus.janino.UnitCompiler.access$5000(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3151)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3139)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:3139)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:2112)
> at org.codehaus.janino.UnitCompiler.access$1700(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1377)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1370)
> at org.codehaus.janino.Java$ExpressionStatement.accept(Java.java:2558)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:1370)
> at
> org.codehaus.janino.UnitCompiler.compileStatements(UnitCompiler.java:1450)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:2811)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1262)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1234)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:538)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:890)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:894)
> at org.codehaus.janino.UnitCompiler.access$600(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$2.visitMemberClassDeclaration(UnitCompiler.java:377)
> at
> org.codehaus.janino.UnitCompiler$2.visitMemberClassDeclaration(UnitCompiler.java:369)
> at
>
[jira] [Comment Edited] (SPARK-18016) Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
[
https://issues.apache.org/jira/browse/SPARK-18016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16333917#comment-16333917
]
Gaurav Garg edited comment on SPARK-18016 at 1/22/18 6:32 AM:
--
[~Tagar], it is workiing fine with me when pivoting around 20K columns of
dataframe, when using above snippet of code.
was (Author: gaurav.garg):
[~Tagar], it is workiing fine with me when pivoting around 10K columns of
dataframe, when using above snippet of code.
> Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
> -
>
> Key: SPARK-18016
> URL: https://issues.apache.org/jira/browse/SPARK-18016
> Project: Spark
> Issue Type: Bug
> Components: SQL
>Affects Versions: 2.1.0
>Reporter: Aleksander Eskilson
>Assignee: Kazuaki Ishizaki
>Priority: Major
> Fix For: 2.3.0
>
>
> When attempting to encode collections of large Java objects to Datasets
> having very wide or deeply nested schemas, code generation can fail, yielding:
> {code}
> Caused by: org.codehaus.janino.JaninoRuntimeException: Constant pool for
> class
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
> has grown past JVM limit of 0x
> at
> org.codehaus.janino.util.ClassFile.addToConstantPool(ClassFile.java:499)
> at
> org.codehaus.janino.util.ClassFile.addConstantNameAndTypeInfo(ClassFile.java:439)
> at
> org.codehaus.janino.util.ClassFile.addConstantMethodrefInfo(ClassFile.java:358)
> at
> org.codehaus.janino.UnitCompiler.writeConstantMethodrefInfo(UnitCompiler.java:4)
> at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java:4547)
> at org.codehaus.janino.UnitCompiler.access$7500(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3774)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3762)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compileGet(UnitCompiler.java:3762)
> at
> org.codehaus.janino.UnitCompiler.compileGetValue(UnitCompiler.java:4933)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:3180)
> at org.codehaus.janino.UnitCompiler.access$5000(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3151)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3139)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:3139)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:2112)
> at org.codehaus.janino.UnitCompiler.access$1700(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1377)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1370)
> at org.codehaus.janino.Java$ExpressionStatement.accept(Java.java:2558)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:1370)
> at
> org.codehaus.janino.UnitCompiler.compileStatements(UnitCompiler.java:1450)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:2811)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1262)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1234)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:538)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:890)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:894)
> at org.codehaus.janino.UnitCompiler.access$600(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$2.visitMemberClassDeclaration(UnitCompiler.java:377)
> at
> org.codehaus.janino.UnitCompiler$2.visitMemberClassDeclaration(UnitCompiler.java:369)
> at
> org.codehaus.janino.Java$MemberClassDeclaration.accept(Java.java:1128)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:369)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMemberTypes(UnitCompiler.java:1209)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:564)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:420)
> at org.codehaus.janino.UnitCompiler.access$400(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$2.visitPackageMemberClassDeclaration(UnitCompiler.java:374)
> at
> org.codehaus.janino.UnitCompiler$2.visitPackageMemberClassDeclaration(UnitCompiler.java:369)
> at
>
[jira] [Comment Edited] (SPARK-18016) Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
[
https://issues.apache.org/jira/browse/SPARK-18016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16333857#comment-16333857
]
Gaurav Garg edited comment on SPARK-18016 at 1/22/18 4:27 AM:
--
In sequence,
df
.groupBy({color:#008000}"col1"{color})
.pivot({color:#008000}"col2"{color})
.agg(count({color:#008000}"col2"{color}))
.na.fill({color:#ff}0{color})
.drop({color:#008000}"col1"{color})
Each "col1" and "col2" have around 80K distinct enteries, which makes this
pivot a dataframe of size around "80K * 80K". After this, when I am trying to
save this dataframe or manipulate this dataframe, gives the following error:
*Caused by: org.codehaus.janino.JaninoRuntimeException: Constant pool for class
org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
has grown past JVM limit of 0x*
*at org.codehaus.janino.util.ClassFile.addToConstantPool(ClassFile.java:499)*
was (Author: gaurav.garg):
In sequence,
df
.groupBy({color:#008000}"col1"{color})
.pivot({color:#008000}"col2"{color})
.agg(count({color:#008000}"col2"{color}))
.na.fill({color:#ff}0{color})
.drop({color:#008000}"col1"{color})
Each "col1" and "col2" have around 80K distinct enteries, which makes this
pivot a dataframe of size around "80K * 80K". After this, while I am trying to
save this dataframe or manipulate this dataframe, gives the following error:
*Caused by: org.codehaus.janino.JaninoRuntimeException: Constant pool for class
org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
has grown past JVM limit of 0x*
*at org.codehaus.janino.util.ClassFile.addToConstantPool(ClassFile.java:499)*
> Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
> -
>
> Key: SPARK-18016
> URL: https://issues.apache.org/jira/browse/SPARK-18016
> Project: Spark
> Issue Type: Bug
> Components: SQL
>Affects Versions: 2.1.0
>Reporter: Aleksander Eskilson
>Assignee: Kazuaki Ishizaki
>Priority: Major
> Fix For: 2.3.0
>
>
> When attempting to encode collections of large Java objects to Datasets
> having very wide or deeply nested schemas, code generation can fail, yielding:
> {code}
> Caused by: org.codehaus.janino.JaninoRuntimeException: Constant pool for
> class
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
> has grown past JVM limit of 0x
> at
> org.codehaus.janino.util.ClassFile.addToConstantPool(ClassFile.java:499)
> at
> org.codehaus.janino.util.ClassFile.addConstantNameAndTypeInfo(ClassFile.java:439)
> at
> org.codehaus.janino.util.ClassFile.addConstantMethodrefInfo(ClassFile.java:358)
> at
> org.codehaus.janino.UnitCompiler.writeConstantMethodrefInfo(UnitCompiler.java:4)
> at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java:4547)
> at org.codehaus.janino.UnitCompiler.access$7500(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3774)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3762)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compileGet(UnitCompiler.java:3762)
> at
> org.codehaus.janino.UnitCompiler.compileGetValue(UnitCompiler.java:4933)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:3180)
> at org.codehaus.janino.UnitCompiler.access$5000(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3151)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3139)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:3139)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:2112)
> at org.codehaus.janino.UnitCompiler.access$1700(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1377)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1370)
> at org.codehaus.janino.Java$ExpressionStatement.accept(Java.java:2558)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:1370)
> at
> org.codehaus.janino.UnitCompiler.compileStatements(UnitCompiler.java:1450)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:2811)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1262)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1234)
> at
[jira] [Comment Edited] (SPARK-18016) Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
[
https://issues.apache.org/jira/browse/SPARK-18016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16331847#comment-16331847
]
Gaurav edited comment on SPARK-18016 at 1/19/18 7:31 AM:
-
saving DataFrame having 4 columns in snappy.parquet format in HDFS still
giving Constant pool exception using "Spark-core 2.4.0-SNAPSHOT" jar mentioned
below:
*Caused by: org.codehaus.janino.JaninoRuntimeException: Constant pool for class
org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
has grown past JVM limit of 0x*
*at org.codehaus.janino.util.ClassFile.addToConstantPool(ClassFile.java:499)*
I have requirement where i am having more than 60K columns wide DataFrame of
which correlation has to be calculated.
was (Author: gaurav.garg):
saving DataFrame having 4 columns in snappy.parquet format in HDFS still
giving Constant pool exception using "Spark-core 2.4.0-SNAPSHOT" jar
I have requirement where i am having more than 60K columns wide DataFrame of
which correlation has to be calculated.
> Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
> -
>
> Key: SPARK-18016
> URL: https://issues.apache.org/jira/browse/SPARK-18016
> Project: Spark
> Issue Type: Bug
> Components: SQL
>Affects Versions: 2.1.0
>Reporter: Aleksander Eskilson
>Assignee: Kazuaki Ishizaki
>Priority: Major
> Fix For: 2.3.0
>
>
> When attempting to encode collections of large Java objects to Datasets
> having very wide or deeply nested schemas, code generation can fail, yielding:
> {code}
> Caused by: org.codehaus.janino.JaninoRuntimeException: Constant pool for
> class
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
> has grown past JVM limit of 0x
> at
> org.codehaus.janino.util.ClassFile.addToConstantPool(ClassFile.java:499)
> at
> org.codehaus.janino.util.ClassFile.addConstantNameAndTypeInfo(ClassFile.java:439)
> at
> org.codehaus.janino.util.ClassFile.addConstantMethodrefInfo(ClassFile.java:358)
> at
> org.codehaus.janino.UnitCompiler.writeConstantMethodrefInfo(UnitCompiler.java:4)
> at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java:4547)
> at org.codehaus.janino.UnitCompiler.access$7500(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3774)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3762)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compileGet(UnitCompiler.java:3762)
> at
> org.codehaus.janino.UnitCompiler.compileGetValue(UnitCompiler.java:4933)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:3180)
> at org.codehaus.janino.UnitCompiler.access$5000(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3151)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3139)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:3139)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:2112)
> at org.codehaus.janino.UnitCompiler.access$1700(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1377)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1370)
> at org.codehaus.janino.Java$ExpressionStatement.accept(Java.java:2558)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:1370)
> at
> org.codehaus.janino.UnitCompiler.compileStatements(UnitCompiler.java:1450)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:2811)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1262)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1234)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:538)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:890)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:894)
> at org.codehaus.janino.UnitCompiler.access$600(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$2.visitMemberClassDeclaration(UnitCompiler.java:377)
> at
> org.codehaus.janino.UnitCompiler$2.visitMemberClassDeclaration(UnitCompiler.java:369)
> at
> org.codehaus.janino.Java$MemberClassDeclaration.accept(Java.java:1128)
> at
[jira] [Comment Edited] (SPARK-18016) Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
[
https://issues.apache.org/jira/browse/SPARK-18016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16331847#comment-16331847
]
Gaurav edited comment on SPARK-18016 at 1/19/18 7:29 AM:
-
saving DataFrame having 4 columns in snappy.parquet format in HDFS still
giving Constant pool exception using "Spark-core 2.4.0-SNAPSHOT" jar
I have requirement where i am having more than 60K columns wide DataFrame of
which correlation has to be calculated.
was (Author: gaurav.garg):
saving DataFrame having 4 columns in snappy.parquet format in HDFS still
giving Constant pool exception using "Spark-core 2.4.0-SNAPSHOT" jar
> Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
> -
>
> Key: SPARK-18016
> URL: https://issues.apache.org/jira/browse/SPARK-18016
> Project: Spark
> Issue Type: Bug
> Components: SQL
>Affects Versions: 2.1.0
>Reporter: Aleksander Eskilson
>Assignee: Kazuaki Ishizaki
>Priority: Major
> Fix For: 2.3.0
>
>
> When attempting to encode collections of large Java objects to Datasets
> having very wide or deeply nested schemas, code generation can fail, yielding:
> {code}
> Caused by: org.codehaus.janino.JaninoRuntimeException: Constant pool for
> class
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
> has grown past JVM limit of 0x
> at
> org.codehaus.janino.util.ClassFile.addToConstantPool(ClassFile.java:499)
> at
> org.codehaus.janino.util.ClassFile.addConstantNameAndTypeInfo(ClassFile.java:439)
> at
> org.codehaus.janino.util.ClassFile.addConstantMethodrefInfo(ClassFile.java:358)
> at
> org.codehaus.janino.UnitCompiler.writeConstantMethodrefInfo(UnitCompiler.java:4)
> at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java:4547)
> at org.codehaus.janino.UnitCompiler.access$7500(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3774)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3762)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compileGet(UnitCompiler.java:3762)
> at
> org.codehaus.janino.UnitCompiler.compileGetValue(UnitCompiler.java:4933)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:3180)
> at org.codehaus.janino.UnitCompiler.access$5000(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3151)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3139)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:3139)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:2112)
> at org.codehaus.janino.UnitCompiler.access$1700(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1377)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1370)
> at org.codehaus.janino.Java$ExpressionStatement.accept(Java.java:2558)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:1370)
> at
> org.codehaus.janino.UnitCompiler.compileStatements(UnitCompiler.java:1450)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:2811)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1262)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1234)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:538)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:890)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:894)
> at org.codehaus.janino.UnitCompiler.access$600(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$2.visitMemberClassDeclaration(UnitCompiler.java:377)
> at
> org.codehaus.janino.UnitCompiler$2.visitMemberClassDeclaration(UnitCompiler.java:369)
> at
> org.codehaus.janino.Java$MemberClassDeclaration.accept(Java.java:1128)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:369)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMemberTypes(UnitCompiler.java:1209)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:564)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:420)
> at org.codehaus.janino.UnitCompiler.access$400(UnitCompiler.java:206)
> at
>
[jira] [Comment Edited] (SPARK-18016) Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
[
https://issues.apache.org/jira/browse/SPARK-18016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16141616#comment-16141616
]
Nathalie Jeanray edited comment on SPARK-18016 at 8/25/17 1:31 PM:
---
Hello,
I have the following issue : Caused by:
org.codehaus.janino.JaninoRuntimeException: Constant pool for class
org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
has grown past JVM limit of 0x
when I do
^copy_to(sc,df_train_fin,"df_train_fin",overwrite = TRUE)^
with df as 70 lines and 7129 columns (int type) data frame. I use Spark 2.1.1.
and sparklyr. Maximum column number I can process without any error is 1000.
Exactly at the same moment, I have also :
^Error: C stack usage 48349572 is too close to the limit^
Could you please advice ?
was (Author: njeanray):
Hello,
I have the following issue : Caused by:
org.codehaus.janino.JaninoRuntimeException: Constant pool for class
org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
has grown past JVM limit of 0x
when I do
^copy_to(sc,df_train_fin,"df_train_fin",overwrite = TRUE)t^
with df as 70 lines and 7129 columns (int type) data frame. I use Spark 2.1.1.
and sparklyr. Maximum column number I can process without any error is 1000.
Exactly at the same moment, I have also :
-Error: C stack usage 48349572 is too close to the limit-
Could you please advice ?
> Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
> -
>
> Key: SPARK-18016
> URL: https://issues.apache.org/jira/browse/SPARK-18016
> Project: Spark
> Issue Type: Bug
> Components: SQL
>Affects Versions: 2.1.0
>Reporter: Aleksander Eskilson
>Assignee: Aleksander Eskilson
> Fix For: 2.3.0
>
>
> When attempting to encode collections of large Java objects to Datasets
> having very wide or deeply nested schemas, code generation can fail, yielding:
> {code}
> Caused by: org.codehaus.janino.JaninoRuntimeException: Constant pool for
> class
> org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection
> has grown past JVM limit of 0x
> at
> org.codehaus.janino.util.ClassFile.addToConstantPool(ClassFile.java:499)
> at
> org.codehaus.janino.util.ClassFile.addConstantNameAndTypeInfo(ClassFile.java:439)
> at
> org.codehaus.janino.util.ClassFile.addConstantMethodrefInfo(ClassFile.java:358)
> at
> org.codehaus.janino.UnitCompiler.writeConstantMethodrefInfo(UnitCompiler.java:4)
> at org.codehaus.janino.UnitCompiler.compileGet2(UnitCompiler.java:4547)
> at org.codehaus.janino.UnitCompiler.access$7500(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3774)
> at
> org.codehaus.janino.UnitCompiler$12.visitMethodInvocation(UnitCompiler.java:3762)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compileGet(UnitCompiler.java:3762)
> at
> org.codehaus.janino.UnitCompiler.compileGetValue(UnitCompiler.java:4933)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:3180)
> at org.codehaus.janino.UnitCompiler.access$5000(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3151)
> at
> org.codehaus.janino.UnitCompiler$9.visitMethodInvocation(UnitCompiler.java:3139)
> at org.codehaus.janino.Java$MethodInvocation.accept(Java.java:4328)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:3139)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:2112)
> at org.codehaus.janino.UnitCompiler.access$1700(UnitCompiler.java:206)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1377)
> at
> org.codehaus.janino.UnitCompiler$6.visitExpressionStatement(UnitCompiler.java:1370)
> at org.codehaus.janino.Java$ExpressionStatement.accept(Java.java:2558)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:1370)
> at
> org.codehaus.janino.UnitCompiler.compileStatements(UnitCompiler.java:1450)
> at org.codehaus.janino.UnitCompiler.compile(UnitCompiler.java:2811)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1262)
> at
> org.codehaus.janino.UnitCompiler.compileDeclaredMethods(UnitCompiler.java:1234)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:538)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:890)
> at org.codehaus.janino.UnitCompiler.compile2(UnitCompiler.java:894)
> at org.codehaus.janino.UnitCompiler.access$600(UnitCompiler.java:206)
[jira] [Comment Edited] (SPARK-18016) Code Generation: Constant Pool Past Limit for Wide/Nested Dataset
[
https://issues.apache.org/jira/browse/SPARK-18016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16103853#comment-16103853
]
James Conner edited comment on SPARK-18016 at 7/27/17 8:31 PM:
---
The issue does not appear to be completely fixed. I downloaded the master
today (last commit 2ff35a057efd36bd5c8a545a1ec3bc341432a904, Spark
2.3.0-SNAPSHOT), and attempted to perform a Gradient Boosted Tree (GBT)
Regression on a dataframe which contains 2658 columns. I'm still getting the
same constant pool exceeding JVM 0x error. The steps that I'm using to
generate the error are:
{code:java}
// Imports
import org.apache.spark.sql.SparkSession
import org.apache.spark.sql.functions._
import org.apache.spark.ml.regression.{GBTRegressionModel, GBTRegressor}
import org.apache.spark.ml.feature.{VectorAssembler, Imputer, ImputerModel}
import org.apache.spark.ml.linalg.Vectors
import org.apache.spark.ml.Pipeline
import org.apache.spark.ml.evaluation.RegressionEvaluator
import org.apache.spark.ml.tuning.{ParamGridBuilder, CrossValidator}
import org.apache.spark.sql.{SQLContext, Row, DataFrame, Column}
// Load data
val mainDF =
spark.read.parquet("/path/to/data/input/main_pqt").repartition(1024)
// Impute data
val inColsMain = mainDF.columns.filter(_ != "ID").filter(_ != "SCORE")
val outColsMain = inColsMain.map(i=>(i+"_imputed"))
val mainImputer = new
Imputer().setInputCols(inColsMain).setOutputCols(outColsMain).setStrategy("mean")
val mainImputerBuild = mainImputer.fit(mainDF)
val imputedMainDF = mainImputerBuild.transform(mainDF)
// Drop original feature columns, retain imputed
val fullData = imputedMainDF.select(imputedMainDF.columns.filter(colName =>
!inColsMain.contains(colName)).map(colName => new Column(colName)): _*)
// Split data for testing & training
val Array(trainDF, testDF) = fullData.randomSplit(Array(0.80, 0.20),seed =
12345)
// Vector Assembler
val arrayName = fullData.columns.filter(_ != "ID").filter(_ != "SCORE")
val assembler = new
VectorAssembler().setInputCols(arrayName).setOutputCol("features")
// GBT Object
val gbt = new
GBTRegressor().setLabelCol("SCORE").setFeaturesCol("features").setMaxIter(5).setSeed(1993).setLossType("squared").setSubsamplingRate(1)
// Pipeline Object
val pipeline = new Pipeline().setStages(Array(assembler, gbt))
// Hyper Parameter Grid Object
val paramGrid = new ParamGridBuilder().addGrid(gbt.maxBins, Array(2, 4,
8)).addGrid(gbt.maxDepth, Array(1, 2, 4)).addGrid(gbt.stepSize, Array(0.1,
0.2)).build()
// Evaluator Object
val evaluator = new
RegressionEvaluator().setLabelCol("SCORE").setPredictionCol("prediction").setMetricName("rmse")
// Cross Validation Object
val cv = new
CrossValidator().setEstimator(pipeline).setEvaluator(evaluator).setEstimatorParamMaps(paramGrid).setNumFolds(5)
// Build the model
val gbtModel = cv.fit(trainDF)
{code}
Upon building the model, it errors out with the following cause:
{code:java}
java.lang.RuntimeException: Error while encoding:
org.codehaus.janino.JaninoRuntimeException: failed to compile:
org.codehaus.janino.JaninoRuntimeException: Constant pool for class
org.apache.spark.sql.catalyst.expressions.GeneratedClass$SpecificUnsafeProjection$NestedClass2
has grown past JVM limit of 0x
{code}
was (Author: jamcon):
The issue does not appear to be completely fixed. I downloaded the master
today (last commit 2ff35a057efd36bd5c8a545a1ec3bc341432a904, Spark
2.3.0-SNAPSHOT), and attempted to perform a Gradient Boosted Tree (GBT)
Regression on a dataframe which contains 2658 columns. I'm still getting the
same constant pool exceeding JVM 0x error. The steps that I'm using to
generate the error are:
{code:scala}
// Imports
import org.apache.spark.sql.SparkSession
import org.apache.spark.sql.functions._
import org.apache.spark.ml.regression.{GBTRegressionModel, GBTRegressor}
import org.apache.spark.ml.feature.{VectorAssembler, Imputer, ImputerModel}
import org.apache.spark.ml.linalg.Vectors
import org.apache.spark.ml.Pipeline
import org.apache.spark.ml.evaluation.RegressionEvaluator
import org.apache.spark.ml.tuning.{ParamGridBuilder, CrossValidator}
import org.apache.spark.sql.{SQLContext, Row, DataFrame, Column}
// Load data
val mainDF =
spark.read.parquet("/path/to/data/input/main_pqt").repartition(1024)
// Impute data
val inColsMain = mainDF.columns.filter(_ != "ID").filter(_ != "SCORE")
val outColsMain = inColsMain.map(i=>(i+"_imputed"))
val mainImputer = new
Imputer().setInputCols(inColsMain).setOutputCols(outColsMain).setStrategy("mean")
val mainImputerBuild = mainImputer.fit(mainDF)
val imputedMainDF = mainImputerBuild.transform(mainDF)
// Drop original feature columns, retain imputed
val fullData = imputedMainDF.select(imputedMainDF.columns.filter(colName =>
!inColsMain.contains(colName)).map(colName => new Column(colName)): _*)
// Split data for testing & training
val Array(trainDF, testDF)
