[calcite] branch master updated: Revert "[CALCITE-3947] AbstractRelOptPlanner.classes should be LinkedHashSet so that rule match order is deterministic across runs"

[hyuan]

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The following commit(s) were added to refs/heads/master by this push:
     new af8c8ef  Revert "[CALCITE-3947] AbstractRelOptPlanner.classes should 
be LinkedHashSet so that rule match order is deterministic across runs"
af8c8ef is described below

commit af8c8efdc465435fa095197ff8365d527147ee7a
Author: Haisheng Yuan <h.y...@alibaba-inc.com>
AuthorDate: Fri Apr 24 20:32:19 2020 -0500

    Revert "[CALCITE-3947] AbstractRelOptPlanner.classes should be 
LinkedHashSet so that rule match order is deterministic across runs"
    
    This reverts commit 53bbd2daff8104f3a1113eaaa01bf58ca3361beb.
---
 core/src/main/java/org/apache/calcite/plan/AbstractRelOptPlanner.java | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git 
a/core/src/main/java/org/apache/calcite/plan/AbstractRelOptPlanner.java 
b/core/src/main/java/org/apache/calcite/plan/AbstractRelOptPlanner.java
index 85b060f..222fcbb 100644
--- a/core/src/main/java/org/apache/calcite/plan/AbstractRelOptPlanner.java
+++ b/core/src/main/java/org/apache/calcite/plan/AbstractRelOptPlanner.java
@@ -38,7 +38,6 @@ import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
-import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
@@ -75,7 +74,7 @@ public abstract class AbstractRelOptPlanner implements 
RelOptPlanner {
 
   protected final AtomicBoolean cancelFlag;
 
-  private final Set<Class<? extends RelNode>> classes = new LinkedHashSet<>();
+  private final Set<Class<? extends RelNode>> classes = new HashSet<>();
 
   private final Set<Convention> conventions = new HashSet<>();