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https://issues.apache.org/jira/browse/FLINK-2576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14908086#comment-14908086
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ASF GitHub Bot commented on FLINK-2576:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1138#discussion_r40434856
--- Diff:
flink-optimizer/src/main/java/org/apache/flink/optimizer/dag/MatchNode.java ---
@@ -22,15 +22,16 @@
import java.util.Collections;
import java.util.List;
+import org.apache.flink.api.common.operators.base.AbstractJoinOperatorBase;
import org.apache.flink.api.common.operators.base.JoinOperatorBase;
-import
org.apache.flink.api.common.operators.base.JoinOperatorBase.JoinHint;
+import
org.apache.flink.api.common.operators.base.AbstractJoinOperatorBase.JoinHint;
import org.apache.flink.optimizer.CompilerException;
import org.apache.flink.optimizer.DataStatistics;
import org.apache.flink.optimizer.Optimizer;
import org.apache.flink.optimizer.operators.HashJoinBuildFirstProperties;
import org.apache.flink.optimizer.operators.HashJoinBuildSecondProperties;
import org.apache.flink.optimizer.operators.OperatorDescriptorDual;
-import org.apache.flink.optimizer.operators.SortMergeJoinDescriptor;
--- End diff --
You completely remove the `MatchNode`. It is not referenced in the source
code.
> Add outer joins to API and Optimizer
> ------------------------------------
>
> Key: FLINK-2576
> URL: https://issues.apache.org/jira/browse/FLINK-2576
> Project: Flink
> Issue Type: Sub-task
> Components: Java API, Optimizer, Scala API
> Reporter: Ricky Pogalz
> Priority: Minor
> Fix For: pre-apache
>
>
> Add left/right/full outer join methods to the DataSet APIs (Java, Scala) and
> to the optimizer of Flink.
> Initially, the execution strategy should be a sort-merge outer join
> (FLINK-2105) but can later be extended to hash joins for left/right outer
> joins.
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