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https://issues.apache.org/jira/browse/FLINK-5159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15703156#comment-15703156
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ASF GitHub Bot commented on FLINK-5159:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/2811#discussion_r89882087
--- Diff:
flink-libraries/flink-table/src/test/scala/org/apache/flink/api/scala/batch/sql/CalcITCase.scala
---
@@ -32,6 +32,7 @@ import org.apache.flink.api.table.functions.ScalarFunction
import org.apache.flink.api.table.{Row, TableEnvironment,
ValidationException}
import
org.apache.flink.test.util.MultipleProgramsTestBase.TestExecutionMode
import org.apache.flink.test.util.TestBaseUtils
+import org.junit.Assert._
--- End diff --
Remove import
> Improve perfomance of inner joins with a single row input
> ---------------------------------------------------------
>
> Key: FLINK-5159
> URL: https://issues.apache.org/jira/browse/FLINK-5159
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: Alexander Shoshin
> Assignee: Alexander Shoshin
> Priority: Minor
>
> All inner joins (including a cross join) can be implemented as a
> {{MapFunction}} if one of their inputs is a single row. This row can be
> passed to a {{MapFunction}} as a {{BroadcastSet}}.
> This approach is going to be more lightweight than the other current
> strategies.
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