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https://issues.apache.org/jira/browse/SPARK-8782?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Apache Spark reassigned SPARK-8782:
-----------------------------------
Assignee: Apache Spark (was: Josh Rosen)
> GenerateOrdering fails for NullType (i.e. ORDER BY NULL crashes)
> ----------------------------------------------------------------
>
> Key: SPARK-8782
> URL: https://issues.apache.org/jira/browse/SPARK-8782
> Project: Spark
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 1.5.0
> Reporter: Josh Rosen
> Assignee: Apache Spark
> Priority: Blocker
>
> Queries containing ORDER BY NULL currently result in a code generation
> exception:
> {code}
> public SpecificOrdering
> generate(org.apache.spark.sql.catalyst.expressions.Expression[] expr) {
> return new SpecificOrdering(expr);
> }
> class SpecificOrdering extends
> org.apache.spark.sql.catalyst.expressions.codegen.BaseOrdering {
> private org.apache.spark.sql.catalyst.expressions.Expression[]
> expressions = null;
> public
> SpecificOrdering(org.apache.spark.sql.catalyst.expressions.Expression[] expr)
> {
> expressions = expr;
> }
> @Override
> public int compare(InternalRow a, InternalRow b) {
> InternalRow i = null; // Holds current row being evaluated.
>
> i = a;
> final Object primitive1 = null;
> i = b;
> final Object primitive3 = null;
> if (true && true) {
> // Nothing
> } else if (true) {
> return -1;
> } else if (true) {
> return 1;
> } else {
> int comp = primitive1.compare(primitive3);
> if (comp != 0) {
> return comp;
> }
> }
>
> return 0;
> }
> }
> org.codehaus.commons.compiler.CompileException: Line 29, Column 43: A method
> named "compare" is not declared in any enclosing class nor any supertype, nor
> through a static import
> at
> org.codehaus.janino.UnitCompiler.compileError(UnitCompiler.java:10174)
> {code}
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