Fail incorrectly constructed join queries (#9830)

* Fail incorrectly constructed join queries

* wip annotation for equals implementations

* Add equals tests

* fix tests

* Actually fix the tests

* Address review comments

* prohibit Pattern.hashCode()

.idea/inspectionProfiles/Druid.xml

@@ -69,7 +69,6 @@
       </option>
       <option name="IGNORE_FIELDS_USED_IN_MULTIPLE_METHODS" value="true" />
     </inspection_tool>
-    <inspection_tool class="FieldMayBeFinal" enabled="true" level="WARNING" enabled_by_default="true" />
     <inspection_tool class="FinalStaticMethod" enabled="true" level="ERROR" enabled_by_default="true" />
     <inspection_tool class="FlowJSError" enabled="false" level="Non-TeamCity Error" enabled_by_default="false" />
     <inspection_tool class="ForCanBeForeach" enabled="true" level="WARNING" enabled_by_default="true">
@@ -181,22 +180,22 @@
         <constraint name="y" nameOfExprType="IndexedInts" exprTypeWithinHierarchy="true" within="" contains="" />
       </searchConfiguration>
       <searchConfiguration name="Lists.newArrayList() with a single argument. Use Collections.singletonList() instead" created="1532737126203" text="Lists.newArrayList($x$)" recursive="false" caseInsensitive="true" type="JAVA">
-        <constraint name="x" nameOfExprType="java\.lang\.Iterable|java\.util\.Iterator|Object\[\]" expressionTypes="java.lang.Iterable|java.util.Iterator|Object[]" exprTypeWithinHierarchy="true" negateName="true" negateExprType="true" within="" contains="" />
+        <constraint name="x" nameOfExprType="java\.lang\.Iterable|java\.util\.Iterator|Object\[\]" exprTypeWithinHierarchy="true" negateName="true" negateExprType="true" within="" contains="" />
         <constraint name="__context__" target="true" within="" contains="" />
       </searchConfiguration>
       <searchConfiguration name="Math.abs(rnd.nextInt()) doensn't guarantee positive result. Use nextInt() &amp; Integer.MAX_VALUE or nextInt(Integer.MAX_VALUE)" created="1535067616084" text="$Math$.abs($x$.nextInt())" recursive="false" caseInsensitive="true" type="JAVA">
         <constraint name="__context__" target="true" within="" contains="" />
-        <constraint name="x" nameOfFormalType="java\.util\.Random" exceptedTypes="java.util.Random" exprTypeWithinHierarchy="true" formalTypeWithinHierarchy="true" within="" contains="" />
+        <constraint name="x" nameOfFormalType="java\.util\.Random" exprTypeWithinHierarchy="true" formalTypeWithinHierarchy="true" within="" contains="" />
         <constraint name="Math" within="" contains="" />
       </searchConfiguration>
       <searchConfiguration name="Math.abs(rnd.nextLong()) doesn't guarantee positive result. Use nextLong() &amp; Long.MAX_VALUE" created="1535067616084" text="$Math$.abs($x$.nextLong())" recursive="false" caseInsensitive="true" type="JAVA">
         <constraint name="__context__" target="true" within="" contains="" />
-        <constraint name="x" nameOfFormalType="java\.util\.Random" exceptedTypes="java.util.Random" exprTypeWithinHierarchy="true" formalTypeWithinHierarchy="true" within="" contains="" />
+        <constraint name="x" nameOfFormalType="java\.util\.Random" exprTypeWithinHierarchy="true" formalTypeWithinHierarchy="true" within="" contains="" />
         <constraint name="Math" within="" contains="" />
       </searchConfiguration>
       <searchConfiguration name="Use nextInt(bound) instead" created="1535068047572" text="$x$.nextInt() % $a$" recursive="false" caseInsensitive="true" type="JAVA">
         <constraint name="__context__" target="true" within="" contains="" />
-        <constraint name="x" nameOfFormalType="java\.util\.Random" exceptedTypes="java.util.Random" exprTypeWithinHierarchy="true" formalTypeWithinHierarchy="true" within="" contains="" />
+        <constraint name="x" nameOfFormalType="java\.util\.Random" exprTypeWithinHierarchy="true" formalTypeWithinHierarchy="true" within="" contains="" />
         <constraint name="a" within="" contains="" />
       </searchConfiguration>
       <searchConfiguration name="Use ZKPaths.makePath() with many arguments" created="1537504371779" text="org.apache.curator.utils.ZKPaths.makePath(org.apache.curator.utils.ZKPaths.makePath($x$, $y$), $z$)" recursive="false" caseInsensitive="true" type="JAVA">
@@ -272,29 +271,29 @@
         <constraint name="K" within="" contains="" />
         <constraint name="V" within="" contains="" />
         <constraint name="x" within="" contains="" />
-        <constraint name="y" nameOfExprType="java\.util\.concurrent\.ConcurrentMap" expressionTypes="java.util.concurrent.ConcurrentMap" exprTypeWithinHierarchy="true" within="" contains="" />
+        <constraint name="y" nameOfExprType="java\.util\.concurrent\.ConcurrentMap" exprTypeWithinHierarchy="true" within="" contains="" />
       </searchConfiguration>
       <searchConfiguration name="A ConcurrentHashMap on which compute() is called should be assinged into variables of ConcurrentHashMap type, not ConcurrentMap" text="$x$.compute($y$, $z$)" recursive="true" caseInsensitive="true" type="JAVA">
         <constraint name="__context__" target="true" within="" contains="" />
-        <constraint name="x" nameOfExprType="java\.util\.concurrent\.ConcurrentMap" expressionTypes="java.util.concurrent.ConcurrentMap" within="" contains="" />
+        <constraint name="x" nameOfExprType="java\.util\.concurrent\.ConcurrentMap" within="" contains="" />
         <constraint name="y" within="" contains="" />
         <constraint name="z" within="" contains="" />
       </searchConfiguration>
       <searchConfiguration name="A ConcurrentHashMap on which computeIfAbsent() is called should be assigned into variables of ConcurrentHashMap type, not ConcurrentMap" text="$x$.computeIfAbsent($y$, $z$)" recursive="true" caseInsensitive="true" type="JAVA">
         <constraint name="__context__" target="true" within="" contains="" />
-        <constraint name="x" nameOfExprType="java\.util\.concurrent\.ConcurrentMap" expressionTypes="java.util.concurrent.ConcurrentMap" within="" contains="" />
+        <constraint name="x" nameOfExprType="java\.util\.concurrent\.ConcurrentMap" within="" contains="" />
         <constraint name="y" within="" contains="" />
         <constraint name="z" within="" contains="" />
       </searchConfiguration>
       <searchConfiguration name="A ConcurrentHashMap on which computeIfPresent() is called should be assigned into variables of ConcurrentHashMap type, not ConcurrentMap" text="$x$.computeIfPresent($y$, $z$)" recursive="true" caseInsensitive="true" type="JAVA">
         <constraint name="__context__" target="true" within="" contains="" />
-        <constraint name="x" nameOfExprType="java\.util\.concurrent\.ConcurrentMap" expressionTypes="java.util.concurrent.ConcurrentMap" within="" contains="" />
+        <constraint name="x" nameOfExprType="java\.util\.concurrent\.ConcurrentMap" within="" contains="" />
         <constraint name="y" within="" contains="" />
         <constraint name="z" within="" contains="" />
       </searchConfiguration>
       <searchConfiguration name="A ConcurrentHashMap on which merge() is called should be assigned into variables of ConcurrentHashMap type, not ConcurrentMap" text="$x$.merge($a$, $b$, $c$)" recursive="true" caseInsensitive="true" type="JAVA">
         <constraint name="__context__" target="true" within="" contains="" />
-        <constraint name="x" nameOfExprType="java\.util\.concurrent\.ConcurrentMap" expressionTypes="java.util.concurrent.ConcurrentMap" within="" contains="" />
+        <constraint name="x" nameOfExprType="java\.util\.concurrent\.ConcurrentMap" within="" contains="" />
         <constraint name="a" within="" contains="" />
         <constraint name="b" within="" contains="" />
         <constraint name="c" within="" contains="" />
@@ -373,8 +372,27 @@
       </searchConfiguration>
       <searchConfiguration name="Create a simple ExecutorService (not scheduled)" text="$x$ = $y$;" recursive="true" caseInsensitive="true" type="JAVA" pattern_context="default">
         <constraint name="__context__" within="" contains="" />
-        <constraint name="x" nameOfExprType="java\.util\.concurrent\.ExecutorService" expressionTypes="java.util.concurrent.ExecutorService" within="" contains="" />
+        <constraint name="x" nameOfExprType="java\.util\.concurrent\.ExecutorService" within="" contains="" />
-        <constraint name="y" nameOfExprType="java\.util\.concurrent\.ScheduledExecutorService" expressionTypes="java.util.concurrent.ScheduledExecutorService" exprTypeWithinHierarchy="true" within="" contains="" />
+        <constraint name="y" nameOfExprType="java\.util\.concurrent\.ScheduledExecutorService" exprTypeWithinHierarchy="true" within="" contains="" />
+      </searchConfiguration>
+      <searchConfiguration name="Use equals on Pattern.toString()" text="$a$.equals($b$)" recursive="true" caseInsensitive="true" type="JAVA" pattern_context="default">
+        <constraint name="__context__" within="" contains="" />
+        <constraint name="a" nameOfExprType="Pattern" within="" contains="" />
+        <constraint name="b" within="" contains="" />
+      </searchConfiguration>
+      <searchConfiguration name="Use Objects.equals() on Pattern.toString()" text="java.util.Objects.equals($a$, $b$)" recursive="true" caseInsensitive="true" type="JAVA" pattern_context="default">
+        <constraint name="__context__" within="" contains="" />
+        <constraint name="a" nameOfExprType="Pattern" within="" contains="" />
+        <constraint name="b" within="" contains="" />
+      </searchConfiguration>
+      <searchConfiguration name="Use hashCode of Pattern.toString() instead" text="$a$.hashCode()" recursive="true" caseInsensitive="true" type="JAVA" pattern_context="default">
+        <constraint name="__context__" nameOfExprType="java\.util\.regex\.Pattern" within="" contains="" />
+        <constraint name="a" within="" contains="" />
+      </searchConfiguration>
+      <searchConfiguration name="Use Objects.hash() on Pattern.toString() instead" text="java.util.Objects.hash($b$,$a$)" recursive="true" caseInsensitive="true" type="JAVA" pattern_context="default">
+        <constraint name="__context__" within="" contains="" />
+        <constraint name="a" nameOfExprType="java\.util\.regex\.Pattern" within="" contains="" />
+        <constraint name="b" minCount="0" maxCount="2147483647" within="" contains="" />
       </searchConfiguration>
     </inspection_tool>
     <inspection_tool class="SimplifyStreamApiCallChains" enabled="true" level="ERROR" enabled_by_default="true" />

core/src/main/java/org/apache/druid/annotations/SubclassesMustOverrideEqualsAndHashCode.java

@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.druid.annotations;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * An annotation that tells all subclasses of the annotated class to not use the default implementation of hashCode
+ * and equals that is provided by {@link Object}.
+ *
+ * This annotation is useful on classes that you expect will be used in equals checks in other parts of the codebase.
+ */
+@Documented
+@Inherited
+@Retention(RetentionPolicy.CLASS)
+@Target(ElementType.TYPE)
+public @interface SubclassesMustOverrideEqualsAndHashCode
+{
+}

core/src/main/java/org/apache/druid/math/expr/Expr.java

@@ -27,6 +27,7 @@ import com.google.common.collect.Sets;
 import com.google.common.math.LongMath;
 import com.google.common.primitives.Ints;
 import org.apache.commons.lang.StringEscapeUtils;
+import org.apache.druid.annotations.SubclassesMustOverrideEqualsAndHashCode;
 import org.apache.druid.common.config.NullHandling;
 import org.apache.druid.java.util.common.IAE;
 import org.apache.druid.java.util.common.ISE;
@@ -46,6 +47,7 @@ import java.util.stream.Collectors;
  * Base interface of Druid expression language abstract syntax tree nodes. All {@link Expr} implementations are
  * immutable.
  */
+@SubclassesMustOverrideEqualsAndHashCode
 public interface Expr
 {
   String NULL_LITERAL = "null";
@@ -522,6 +524,25 @@ class LongExpr extends ConstantExpr
   {
     return ExprEval.ofLong(value);
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    LongExpr longExpr = (LongExpr) o;
+    return Objects.equals(value, longExpr.value);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(value);
+  }
 }
 
 class NullLongExpr extends NullNumericConstantExpr
@@ -531,6 +552,18 @@ class NullLongExpr extends NullNumericConstantExpr
   {
     return ExprEval.ofLong(null);
   }
+
+  @Override
+  public final int hashCode()
+  {
+    return NullLongExpr.class.hashCode();
+  }
+
+  @Override
+  public final boolean equals(Object obj)
+  {
+    return obj instanceof NullLongExpr;
+  }
 }
 
 
@@ -569,6 +602,25 @@ class LongArrayExpr extends ConstantExpr
     }
     return StringUtils.format("<LONG>%s", toString());
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    LongArrayExpr that = (LongArrayExpr) o;
+    return Arrays.equals(value, that.value);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Arrays.hashCode(value);
+  }
 }
 
 class StringExpr extends ConstantExpr
@@ -606,6 +658,25 @@ class StringExpr extends ConstantExpr
     // escape as javascript string since string literals are wrapped in single quotes
     return value == null ? NULL_LITERAL : StringUtils.format("'%s'", StringEscapeUtils.escapeJavaScript(value));
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    StringExpr that = (StringExpr) o;
+    return Objects.equals(value, that.value);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(value);
+  }
 }
 
 class StringArrayExpr extends ConstantExpr
@@ -655,6 +726,25 @@ class StringArrayExpr extends ConstantExpr
         )
     );
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    StringArrayExpr that = (StringArrayExpr) o;
+    return Arrays.equals(value, that.value);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Arrays.hashCode(value);
+  }
 }
 
 class DoubleExpr extends ConstantExpr
@@ -683,6 +773,25 @@ class DoubleExpr extends ConstantExpr
   {
     return ExprEval.ofDouble(value);
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    DoubleExpr that = (DoubleExpr) o;
+    return Objects.equals(value, that.value);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(value);
+  }
 }
 
 class NullDoubleExpr extends NullNumericConstantExpr
@@ -692,6 +801,18 @@ class NullDoubleExpr extends NullNumericConstantExpr
   {
     return ExprEval.ofDouble(null);
   }
+
+  @Override
+  public final int hashCode()
+  {
+    return NullDoubleExpr.class.hashCode();
+  }
+
+  @Override
+  public final boolean equals(Object obj)
+  {
+    return obj instanceof NullDoubleExpr;
+  }
 }
 
 class DoubleArrayExpr extends ConstantExpr
@@ -729,6 +850,25 @@ class DoubleArrayExpr extends ConstantExpr
     }
     return StringUtils.format("<DOUBLE>%s", toString());
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    DoubleArrayExpr that = (DoubleArrayExpr) o;
+    return Arrays.equals(value, that.value);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Arrays.hashCode(value);
+  }
 }
 
 /**
@@ -837,6 +977,25 @@ class IdentifierExpr implements Expr
   {
     return shuttle.visit(this);
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    IdentifierExpr that = (IdentifierExpr) o;
+    return Objects.equals(identifier, that.identifier);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(identifier);
+  }
 }
 
 class LambdaExpr implements Expr
@@ -921,6 +1080,26 @@ class LambdaExpr implements Expr
     BindingDetails bodyDetails = expr.analyzeInputs();
     return bodyDetails.removeLambdaArguments(lambdaArgs);
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    LambdaExpr that = (LambdaExpr) o;
+    return Objects.equals(args, that.args) &&
+           Objects.equals(expr, that.expr);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(args, expr);
+  }
 }
 
 /**
@@ -989,6 +1168,26 @@ class FunctionExpr implements Expr
                       .withArrayInputs(function.hasArrayInputs())
                       .withArrayOutput(function.hasArrayOutput());
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    FunctionExpr that = (FunctionExpr) o;
+    return args.equals(that.args) &&
+           name.equals(that.name);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(args, name);
+  }
 }
 
 /**
@@ -1080,6 +1279,27 @@ class ApplyFunctionExpr implements Expr
   {
     return bindingDetails;
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ApplyFunctionExpr that = (ApplyFunctionExpr) o;
+    return name.equals(that.name) &&
+           lambdaExpr.equals(that.lambdaExpr) &&
+           argsExpr.equals(that.argsExpr);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(name, lambdaExpr, argsExpr);
+  }
 }
 
 /**
@@ -1120,6 +1340,25 @@ abstract class UnaryExpr implements Expr
     // currently all unary operators only operate on scalar inputs
     return expr.analyzeInputs().withScalarArguments(ImmutableSet.of(expr));
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    UnaryExpr unaryExpr = (UnaryExpr) o;
+    return Objects.equals(expr, unaryExpr.expr);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(expr);
+  }
 }
 
 class UnaryMinusExpr extends UnaryExpr
@@ -1262,6 +1501,27 @@ abstract class BinaryOpExprBase implements Expr
     // currently all binary operators operate on scalar inputs
     return left.analyzeInputs().with(right).withScalarArguments(ImmutableSet.of(left, right));
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    BinaryOpExprBase that = (BinaryOpExprBase) o;
+    return Objects.equals(op, that.op) &&
+           Objects.equals(left, that.left) &&
+           Objects.equals(right, that.right);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(op, left, right);
+  }
 }
 
 /**
@@ -1711,5 +1971,6 @@ class BinOrExpr extends BinaryOpExprBase
     ExprEval leftVal = left.eval(bindings);
     return leftVal.asBoolean() ? leftVal : right.eval(bindings);
   }
+
 }
 

core/src/main/java/org/apache/druid/math/expr/ExprMacroTable.java

@@ -30,6 +30,7 @@ import javax.annotation.Nullable;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Set;
 import java.util.stream.Collectors;
 
@@ -129,6 +130,26 @@ public class ExprMacroTable
       return StringUtils.format("%s(%s)", name, arg.stringify());
     }
 
+    @Override
+    public boolean equals(Object o)
+    {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      BaseScalarUnivariateMacroFunctionExpr that = (BaseScalarUnivariateMacroFunctionExpr) o;
+      return Objects.equals(name, that.name) &&
+             Objects.equals(arg, that.arg);
+    }
+
+    @Override
+    public int hashCode()
+    {
+      return Objects.hash(name, arg);
+    }
+
     private BindingDetails supplyAnalyzeInputs()
     {
       return arg.analyzeInputs().withScalarArguments(ImmutableSet.of(arg));
@@ -178,6 +199,26 @@ public class ExprMacroTable
       return analyzeInputsSupplier.get();
     }
 
+    @Override
+    public boolean equals(Object o)
+    {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      BaseScalarMacroFunctionExpr that = (BaseScalarMacroFunctionExpr) o;
+      return Objects.equals(name, that.name) &&
+             Objects.equals(args, that.args);
+    }
+
+    @Override
+    public int hashCode()
+    {
+      return Objects.hash(name, args);
+    }
+
     private BindingDetails supplyAnalyzeInputs()
     {
       final Set<Expr> argSet = Sets.newHashSetWithExpectedSize(args.size());

core/src/test/java/org/apache/druid/math/expr/ExprTest.java

@@ -0,0 +1,190 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.druid.math.expr;
+
+import nl.jqno.equalsverifier.EqualsVerifier;
+import org.junit.Test;
+
+public class ExprTest
+{
+  @Test
+  public void testEqualsContractForBinOrExpr()
+  {
+    EqualsVerifier.forClass(BinOrExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBinGtExpr()
+  {
+    EqualsVerifier.forClass(BinGtExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBinMinusExpr()
+  {
+    EqualsVerifier.forClass(BinMinusExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBinPowExpr()
+  {
+    EqualsVerifier.forClass(BinPowExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBinMulExpr()
+  {
+    EqualsVerifier.forClass(BinMulExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBinDivExpr()
+  {
+    EqualsVerifier.forClass(BinDivExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBinModuloExpr()
+  {
+    EqualsVerifier.forClass(BinModuloExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBinPlusExpr()
+  {
+    EqualsVerifier.forClass(BinPlusExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBinLtExpr()
+  {
+    EqualsVerifier.forClass(BinLtExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBinGeqExpr()
+  {
+    EqualsVerifier.forClass(BinGeqExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBinEqExpr()
+  {
+    EqualsVerifier.forClass(BinEqExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBinNeqExpr()
+  {
+    EqualsVerifier.forClass(BinNeqExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBinAndExpr()
+  {
+    EqualsVerifier.forClass(BinAndExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForFunctionExpr()
+  {
+    EqualsVerifier.forClass(FunctionExpr.class).usingGetClass().withIgnoredFields("function").verify();
+  }
+
+  @Test
+  public void testEqualsContractForApplyFunctionExpr()
+  {
+    EqualsVerifier.forClass(ApplyFunctionExpr.class)
+                  .usingGetClass()
+                  .withIgnoredFields("function", "bindingDetails", "lambdaBindingDetails", "argsBindingDetails")
+                  .verify();
+  }
+
+  @Test
+  public void testEqualsContractForUnaryNotExpr()
+  {
+    EqualsVerifier.forClass(UnaryNotExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForUnaryMinusExpr()
+  {
+    EqualsVerifier.forClass(UnaryMinusExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForStringExpr()
+  {
+    EqualsVerifier.forClass(StringExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForDoubleExpr()
+  {
+    EqualsVerifier.forClass(DoubleExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForLongExpr()
+  {
+    EqualsVerifier.forClass(LongExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForStringArrayExpr()
+  {
+    EqualsVerifier.forClass(StringArrayExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForLongArrayExpr()
+  {
+    EqualsVerifier.forClass(LongArrayExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForDoubleArrayExpr()
+  {
+    EqualsVerifier.forClass(DoubleArrayExpr.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForIdentifierExpr()
+  {
+    EqualsVerifier.forClass(IdentifierExpr.class).usingGetClass().withIgnoredFields("binding").verify();
+  }
+
+  @Test
+  public void testEqualsContractForLambdaExpr()
+  {
+    EqualsVerifier.forClass(LambdaExpr.class).usingGetClass().verify();
+  }
+  @Test
+  public void testEqualsContractForNullLongExpr()
+  {
+    EqualsVerifier.forClass(NullLongExpr.class).verify();
+  }
+
+  @Test
+  public void testEqualsContractForNullDoubleExpr()
+  {
+    EqualsVerifier.forClass(NullDoubleExpr.class).verify();
+  }
+}

processing/pom.xml

@@ -204,6 +204,12 @@
             <artifactId>equalsverifier</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.reflections</groupId>
+            <artifactId>reflections</artifactId>
+            <version>0.9.12</version>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>pl.pragmatists</groupId>
             <artifactId>JUnitParams</artifactId>

processing/src/main/java/org/apache/druid/collections/spatial/search/Bound.java

@@ -21,6 +21,7 @@ package org.apache.druid.collections.spatial.search;
 
 import com.fasterxml.jackson.annotation.JsonSubTypes;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import org.apache.druid.annotations.SubclassesMustOverrideEqualsAndHashCode;
 import org.apache.druid.collections.spatial.ImmutableNode;
 import org.apache.druid.collections.spatial.ImmutablePoint;
 
@@ -32,6 +33,7 @@ import org.apache.druid.collections.spatial.ImmutablePoint;
     @JsonSubTypes.Type(name = "radius", value = RadiusBound.class),
     @JsonSubTypes.Type(name = "polygon", value = PolygonBound.class)
 })
+@SubclassesMustOverrideEqualsAndHashCode
 public interface Bound
 {
   int getLimit();

processing/src/main/java/org/apache/druid/collections/spatial/search/PolygonBound.java

@@ -27,6 +27,7 @@ import com.google.common.collect.Iterables;
 import org.apache.druid.collections.spatial.ImmutablePoint;
 
 import java.nio.ByteBuffer;
+import java.util.Arrays;
 
 /**
  */
@@ -195,4 +196,30 @@ public class PolygonBound extends RectangularBound
 
     return cacheKey.array();
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    if (!super.equals(o)) {
+      return false;
+    }
+    PolygonBound that = (PolygonBound) o;
+    return Arrays.equals(abscissa, that.abscissa) &&
+           Arrays.equals(ordinate, that.ordinate);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    int result = super.hashCode();
+    result = 31 * result + Arrays.hashCode(abscissa);
+    result = 31 * result + Arrays.hashCode(ordinate);
+    return result;
+  }
 }

processing/src/main/java/org/apache/druid/collections/spatial/search/RectangularBound.java

@@ -28,6 +28,8 @@ import org.apache.druid.collections.spatial.ImmutableNode;
 import org.apache.druid.collections.spatial.ImmutablePoint;
 
 import java.nio.ByteBuffer;
+import java.util.Arrays;
+import java.util.Objects;
 
 /**
  */
@@ -151,4 +153,29 @@ public class RectangularBound implements Bound
         .put(CACHE_TYPE_ID);
     return cacheKey.array();
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    RectangularBound that = (RectangularBound) o;
+    return limit == that.limit &&
+           numDims == that.numDims &&
+           Arrays.equals(minCoords, that.minCoords) &&
+           Arrays.equals(maxCoords, that.maxCoords);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    int result = Objects.hash(limit, numDims);
+    result = 31 * result + Arrays.hashCode(minCoords);
+    result = 31 * result + Arrays.hashCode(maxCoords);
+    return result;
+  }
 }

processing/src/main/java/org/apache/druid/query/dimension/DimensionSpec.java

@@ -21,6 +21,7 @@ package org.apache.druid.query.dimension;
 
 import com.fasterxml.jackson.annotation.JsonSubTypes;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import org.apache.druid.annotations.SubclassesMustOverrideEqualsAndHashCode;
 import org.apache.druid.java.util.common.Cacheable;
 import org.apache.druid.java.util.common.UOE;
 import org.apache.druid.query.extraction.ExtractionFn;
@@ -43,6 +44,7 @@ import javax.annotation.Nullable;
     @JsonSubTypes.Type(name = "listFiltered", value = ListFilteredDimensionSpec.class),
     @JsonSubTypes.Type(name = "prefixFiltered", value = PrefixFilteredDimensionSpec.class)
 })
+@SubclassesMustOverrideEqualsAndHashCode
 public interface DimensionSpec extends Cacheable
 {
   String getDimension();

processing/src/main/java/org/apache/druid/query/dimension/RegexFilteredDimensionSpec.java

@@ -136,7 +136,6 @@ public class RegexFilteredDimensionSpec extends BaseFilteredDimensionSpec
       return false;
     }
     return pattern.equals(that.pattern);
-
   }
 
   @Override

processing/src/main/java/org/apache/druid/query/expression/TimestampCeilExprMacro.java

@@ -19,6 +19,7 @@
 
 package org.apache.druid.query.expression;
 
+import com.google.common.annotations.VisibleForTesting;
 import org.apache.druid.java.util.common.DateTimes;
 import org.apache.druid.java.util.common.IAE;
 import org.apache.druid.java.util.common.granularity.Granularity;
@@ -30,6 +31,7 @@ import org.joda.time.DateTime;
 
 import javax.annotation.Nonnull;
 import java.util.List;
+import java.util.Objects;
 import java.util.stream.Collectors;
 
 public class TimestampCeilExprMacro implements ExprMacroTable.ExprMacro
@@ -56,7 +58,8 @@ public class TimestampCeilExprMacro implements ExprMacroTable.ExprMacro
     }
   }
 
-  private static class TimestampCeilExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
+  @VisibleForTesting
+  static class TimestampCeilExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
   {
     private final Granularity granularity;
 
@@ -89,6 +92,28 @@ public class TimestampCeilExprMacro implements ExprMacroTable.ExprMacro
       List<Expr> newArgs = args.stream().map(x -> x.visit(shuttle)).collect(Collectors.toList());
       return shuttle.visit(new TimestampCeilExpr(newArgs));
     }
+
+    @Override
+    public boolean equals(Object o)
+    {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      if (!super.equals(o)) {
+        return false;
+      }
+      TimestampCeilExpr that = (TimestampCeilExpr) o;
+      return Objects.equals(granularity, that.granularity);
+    }
+
+    @Override
+    public int hashCode()
+    {
+      return Objects.hash(super.hashCode(), granularity);
+    }
   }
 
   private static PeriodGranularity getGranularity(final List<Expr> args, final Expr.ObjectBinding bindings)
@@ -101,7 +126,8 @@ public class TimestampCeilExprMacro implements ExprMacroTable.ExprMacro
     );
   }
 
-  private static class TimestampCeilDynamicExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
+  @VisibleForTesting
+  static class TimestampCeilDynamicExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr
   {
     TimestampCeilDynamicExpr(final List<Expr> args)
     {

processing/src/main/java/org/apache/druid/query/expression/TimestampFloorExprMacro.java

@@ -28,6 +28,7 @@ import org.apache.druid.math.expr.ExprMacroTable;
 
 import javax.annotation.Nonnull;
 import java.util.List;
+import java.util.Objects;
 import java.util.stream.Collectors;
 
 public class TimestampFloorExprMacro implements ExprMacroTable.ExprMacro
@@ -109,6 +110,28 @@ public class TimestampFloorExprMacro implements ExprMacroTable.ExprMacro
 
       return shuttle.visit(new TimestampFloorExpr(newArgs));
     }
+
+    @Override
+    public boolean equals(Object o)
+    {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      if (!super.equals(o)) {
+        return false;
+      }
+      TimestampFloorExpr that = (TimestampFloorExpr) o;
+      return Objects.equals(granularity, that.granularity);
+    }
+
+    @Override
+    public int hashCode()
+    {
+      return Objects.hash(super.hashCode(), granularity);
+    }
   }
 
   public static class TimestampFloorDynamicExpr extends ExprMacroTable.BaseScalarMacroFunctionExpr

processing/src/main/java/org/apache/druid/query/expression/TrimExprMacro.java

@@ -19,6 +19,7 @@
 
 package org.apache.druid.query.expression;
 
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.collect.ImmutableSet;
 import org.apache.druid.java.util.common.IAE;
 import org.apache.druid.java.util.common.StringUtils;
@@ -27,7 +28,9 @@ import org.apache.druid.math.expr.ExprEval;
 import org.apache.druid.math.expr.ExprMacroTable;
 
 import javax.annotation.Nonnull;
+import java.util.Arrays;
 import java.util.List;
+import java.util.Objects;
 
 public abstract class TrimExprMacro implements ExprMacroTable.ExprMacro
 {
@@ -101,7 +104,8 @@ public abstract class TrimExprMacro implements ExprMacroTable.ExprMacro
     }
   }
 
-  private static class TrimStaticCharsExpr extends ExprMacroTable.BaseScalarUnivariateMacroFunctionExpr
+  @VisibleForTesting
+  static class TrimStaticCharsExpr extends ExprMacroTable.BaseScalarUnivariateMacroFunctionExpr
   {
     private final TrimMode mode;
     private final char[] chars;
@@ -172,9 +176,36 @@ public abstract class TrimExprMacro implements ExprMacroTable.ExprMacro
       }
       return super.stringify();
     }
+
+    @Override
+    public boolean equals(Object o)
+    {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      if (!super.equals(o)) {
+        return false;
+      }
+      TrimStaticCharsExpr that = (TrimStaticCharsExpr) o;
+      return mode == that.mode &&
+             Arrays.equals(chars, that.chars) &&
+             Objects.equals(charsExpr, that.charsExpr);
     }
 
-  private static class TrimDynamicCharsExpr implements Expr
+    @Override
+    public int hashCode()
+    {
+      int result = Objects.hash(super.hashCode(), mode, charsExpr);
+      result = 31 * result + Arrays.hashCode(chars);
+      return result;
+    }
+  }
+
+  @VisibleForTesting
+  static class TrimDynamicCharsExpr implements Expr
   {
     private final TrimMode mode;
     private final Expr stringExpr;
@@ -265,6 +296,27 @@ public abstract class TrimExprMacro implements ExprMacroTable.ExprMacro
                        .with(charsExpr)
                        .withScalarArguments(ImmutableSet.of(stringExpr, charsExpr));
     }
+
+    @Override
+    public boolean equals(Object o)
+    {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      TrimDynamicCharsExpr that = (TrimDynamicCharsExpr) o;
+      return mode == that.mode &&
+             Objects.equals(stringExpr, that.stringExpr) &&
+             Objects.equals(charsExpr, that.charsExpr);
+    }
+
+    @Override
+    public int hashCode()
+    {
+      return Objects.hash(mode, stringExpr, charsExpr);
+    }
   }
 
   private static boolean arrayContains(char[] array, char c)

processing/src/main/java/org/apache/druid/query/extraction/CascadeExtractionFn.java

@@ -21,20 +21,22 @@ package org.apache.druid.query.extraction;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Joiner;
 import com.google.common.base.Preconditions;
 import com.google.common.primitives.Bytes;
 
 import javax.annotation.Nullable;
 import java.util.Arrays;
+import java.util.Objects;
 
 public class CascadeExtractionFn implements ExtractionFn
 {
-  private final ExtractionFn[] extractionFns;
+  @VisibleForTesting
-  private final ChainedExtractionFn chainedExtractionFn;
+  static final ChainedExtractionFn DEFAULT_CHAINED_EXTRACTION_FN = new ChainedExtractionFn(
-  private final ChainedExtractionFn DEFAULT_CHAINED_EXTRACTION_FN = new ChainedExtractionFn(
       new ExtractionFn()
       {
+        private static final String NAME = "nullExtractionFn{}";
         @Override
         public byte[] getCacheKey()
         {
@@ -76,12 +78,28 @@ public class CascadeExtractionFn implements ExtractionFn
         @Override
         public String toString()
         {
-          return "nullExtractionFn{}";
+          return NAME;
+        }
+
+        @Override
+        public int hashCode()
+        {
+          return NAME.hashCode();
+        }
+
+        @Override
+        public boolean equals(Object obj)
+        {
+          return obj != null
+                 && getClass().equals(obj.getClass());
         }
       },
       null
   );
 
+  private final ExtractionFn[] extractionFns;
+  private final ChainedExtractionFn chainedExtractionFn;
+
   @JsonCreator
   public CascadeExtractionFn(
       @JsonProperty("extractionFns") ExtractionFn[] extractionFn
@@ -172,7 +190,9 @@ public class CascadeExtractionFn implements ExtractionFn
   @Override
   public int hashCode()
   {
-    return chainedExtractionFn.hashCode();
+    int result = Objects.hash(chainedExtractionFn);
+    result = 31 * result + Arrays.hashCode(extractionFns);
+    return result;
   }
 
   @Override
@@ -181,7 +201,8 @@ public class CascadeExtractionFn implements ExtractionFn
     return "CascadeExtractionFn{extractionFns=[" + chainedExtractionFn + "]}";
   }
 
-  private static class ChainedExtractionFn
+  @VisibleForTesting
+  static class ChainedExtractionFn
   {
     private final ExtractionFn fn;
     private final ChainedExtractionFn child;
@@ -240,27 +261,15 @@ public class CascadeExtractionFn implements ExtractionFn
       if (o == null || getClass() != o.getClass()) {
         return false;
       }
-
       ChainedExtractionFn that = (ChainedExtractionFn) o;
-
+      return Objects.equals(fn, that.fn) &&
-      if (!fn.equals(that.fn)) {
+             Objects.equals(child, that.child);
-        return false;
-      }
-      if (child != null && !child.equals(that.child)) {
-        return false;
-      }
-
-      return true;
     }
 
     @Override
     public int hashCode()
     {
-      int result = fn.hashCode();
+      return Objects.hash(fn, child);
-      if (child != null) {
-        result = 31 * result + child.hashCode();
-      }
-      return result;
     }
 
     @Override

processing/src/main/java/org/apache/druid/query/extraction/ExtractionFn.java

@@ -21,6 +21,7 @@ package org.apache.druid.query.extraction;
 
 import com.fasterxml.jackson.annotation.JsonSubTypes;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import org.apache.druid.annotations.SubclassesMustOverrideEqualsAndHashCode;
 import org.apache.druid.guice.annotations.ExtensionPoint;
 import org.apache.druid.java.util.common.Cacheable;
 import org.apache.druid.query.lookup.LookupExtractionFn;
@@ -54,6 +55,7 @@ import javax.annotation.Nullable;
     @JsonSubTypes.Type(name = "bucket", value = BucketExtractionFn.class),
     @JsonSubTypes.Type(name = "strlen", value = StrlenExtractionFn.class)
 })
+@SubclassesMustOverrideEqualsAndHashCode
 public interface ExtractionFn extends Cacheable
 {
   /**

processing/src/main/java/org/apache/druid/query/extraction/LowerExtractionFn.java

@@ -27,6 +27,7 @@ import org.apache.druid.java.util.common.StringUtils;
 import javax.annotation.Nullable;
 import java.nio.ByteBuffer;
 import java.util.Locale;
+import java.util.Objects;
 
 @JsonTypeName("lower")
 public class LowerExtractionFn extends DimExtractionFn
@@ -80,4 +81,24 @@ public class LowerExtractionFn extends DimExtractionFn
                      .put(localeBytes)
                      .array();
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    LowerExtractionFn that = (LowerExtractionFn) o;
+    return Objects.equals(locale, that.locale) &&
+           Objects.equals(localeString, that.localeString);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(locale, localeString);
+  }
 }

processing/src/main/java/org/apache/druid/query/extraction/StrlenExtractionFn.java

@@ -65,4 +65,16 @@ public class StrlenExtractionFn extends DimExtractionFn
   {
     return new byte[]{ExtractionCacheHelper.CACHE_TYPE_ID_STRLEN};
   }
+
+  @Override
+  public final int hashCode()
+  {
+    return StrlenExtractionFn.class.hashCode();
+  }
+
+  @Override
+  public final boolean equals(Object obj)
+  {
+    return obj instanceof StrlenExtractionFn;
+  }
 }

processing/src/main/java/org/apache/druid/query/extraction/UpperExtractionFn.java

@@ -27,6 +27,7 @@ import org.apache.druid.java.util.common.StringUtils;
 import javax.annotation.Nullable;
 import java.nio.ByteBuffer;
 import java.util.Locale;
+import java.util.Objects;
 
 @JsonTypeName("upper")
 public class UpperExtractionFn extends DimExtractionFn
@@ -79,4 +80,24 @@ public class UpperExtractionFn extends DimExtractionFn
                      .put(localeBytes)
                      .array();
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    UpperExtractionFn that = (UpperExtractionFn) o;
+    return Objects.equals(locale, that.locale) &&
+           Objects.equals(localeString, that.localeString);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(locale, localeString);
+  }
 }

processing/src/main/java/org/apache/druid/query/filter/DruidPredicateFactory.java

@@ -20,7 +20,9 @@
 package org.apache.druid.query.filter;
 
 import com.google.common.base.Predicate;
+import org.apache.druid.annotations.SubclassesMustOverrideEqualsAndHashCode;
 
+@SubclassesMustOverrideEqualsAndHashCode
 public interface DruidPredicateFactory
 {
   Predicate<String> makeStringPredicate();

processing/src/main/java/org/apache/druid/query/filter/Filter.java

@@ -19,6 +19,7 @@
 
 package org.apache.druid.query.filter;
 
+import org.apache.druid.annotations.SubclassesMustOverrideEqualsAndHashCode;
 import org.apache.druid.collections.bitmap.ImmutableBitmap;
 import org.apache.druid.java.util.common.UOE;
 import org.apache.druid.query.BitmapResultFactory;
@@ -31,6 +32,7 @@ import org.apache.druid.segment.vector.VectorColumnSelectorFactory;
 import java.util.Map;
 import java.util.Set;
 
+@SubclassesMustOverrideEqualsAndHashCode
 public interface Filter
 {
   /**

processing/src/main/java/org/apache/druid/query/filter/FilterTuning.java

@@ -21,6 +21,7 @@ package org.apache.druid.query.filter;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import org.apache.druid.annotations.SubclassesMustOverrideEqualsAndHashCode;
 
 import javax.annotation.Nullable;
 import java.util.Objects;
@@ -45,6 +46,7 @@ import java.util.Objects;
  * As such, it is currently undocumented in user facing documentation on purpose, but whatever this turns into once more
  * automatic usage of this is in place, should be documented in a future release.
  */
+@SubclassesMustOverrideEqualsAndHashCode
 public class FilterTuning
 {
   public static FilterTuning createDefault(Filter filter, BitmapIndexSelector selector)

processing/src/main/java/org/apache/druid/query/filter/LikeDimFilter.java

@@ -284,6 +284,11 @@ public class LikeDimFilter implements DimFilter
     }
 
     public boolean matches(@Nullable final String s)
+    {
+      return matches(s, pattern);
+    }
+
+    private static boolean matches(@Nullable final String s, Pattern pattern)
     {
       String val = NullHandling.nullToEmptyIfNeeded(s);
       return val != null && pattern.matcher(val).matches();
@@ -310,48 +315,7 @@ public class LikeDimFilter implements DimFilter
 
     public DruidPredicateFactory predicateFactory(final ExtractionFn extractionFn)
     {
-      return new DruidPredicateFactory()
+      return new PatternDruidPredicateFactory(extractionFn, pattern);
-      {
-        @Override
-        public Predicate<String> makeStringPredicate()
-        {
-          if (extractionFn != null) {
-            return input -> matches(extractionFn.apply(input));
-          } else {
-            return input -> matches(input);
-          }
-        }
-
-        @Override
-        public DruidLongPredicate makeLongPredicate()
-        {
-          if (extractionFn != null) {
-            return input -> matches(extractionFn.apply(input));
-          } else {
-            return input -> matches(String.valueOf(input));
-          }
-        }
-
-        @Override
-        public DruidFloatPredicate makeFloatPredicate()
-        {
-          if (extractionFn != null) {
-            return input -> matches(extractionFn.apply(input));
-          } else {
-            return input -> matches(String.valueOf(input));
-          }
-        }
-
-        @Override
-        public DruidDoublePredicate makeDoublePredicate()
-        {
-          if (extractionFn != null) {
-            return input -> matches(extractionFn.apply(input));
-          } else {
-            return input -> matches(String.valueOf(input));
-          }
-        }
-      };
     }
 
     public String getPrefix()
@@ -364,6 +328,79 @@ public class LikeDimFilter implements DimFilter
       return suffixMatch;
     }
 
+    @VisibleForTesting
+    static class PatternDruidPredicateFactory implements DruidPredicateFactory
+    {
+      private final ExtractionFn extractionFn;
+      private final Pattern pattern;
+
+      PatternDruidPredicateFactory(ExtractionFn extractionFn, Pattern pattern)
+      {
+        this.extractionFn = extractionFn;
+        this.pattern = pattern;
+      }
+
+      @Override
+      public Predicate<String> makeStringPredicate()
+      {
+        if (extractionFn != null) {
+          return input -> matches(extractionFn.apply(input), pattern);
+        } else {
+          return input -> matches(input, pattern);
+        }
+      }
+
+      @Override
+      public DruidLongPredicate makeLongPredicate()
+      {
+        if (extractionFn != null) {
+          return input -> matches(extractionFn.apply(input), pattern);
+        } else {
+          return input -> matches(String.valueOf(input), pattern);
+        }
+      }
+
+      @Override
+      public DruidFloatPredicate makeFloatPredicate()
+      {
+        if (extractionFn != null) {
+          return input -> matches(extractionFn.apply(input), pattern);
+        } else {
+          return input -> matches(String.valueOf(input), pattern);
+        }
+      }
+
+      @Override
+      public DruidDoublePredicate makeDoublePredicate()
+      {
+        if (extractionFn != null) {
+          return input -> matches(extractionFn.apply(input), pattern);
+        } else {
+          return input -> matches(String.valueOf(input), pattern);
+        }
+      }
+
+      @Override
+      public boolean equals(Object o)
+      {
+        if (this == o) {
+          return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+          return false;
+        }
+        PatternDruidPredicateFactory that = (PatternDruidPredicateFactory) o;
+        return Objects.equals(extractionFn, that.extractionFn) &&
+               Objects.equals(pattern.toString(), that.pattern.toString());
+      }
+
+      @Override
+      public int hashCode()
+      {
+        return Objects.hash(extractionFn, pattern.toString());
+      }
+    }
+
     @Override
     public boolean equals(Object o)
     {

processing/src/main/java/org/apache/druid/query/filter/SelectorPredicateFactory.java

@@ -24,6 +24,7 @@ import com.google.common.base.Predicates;
 import org.apache.druid.segment.DimensionHandlerUtils;
 
 import javax.annotation.Nullable;
+import java.util.Objects;
 
 /**
  * A {@link DruidPredicateFactory} that checks if input values equal a specific, provided value. Initialization work
@@ -147,4 +148,23 @@ public class SelectorPredicateFactory implements DruidPredicateFactory
       }
     }
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    SelectorPredicateFactory that = (SelectorPredicateFactory) o;
+    return Objects.equals(value, that.value);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(value);
+  }
 }

processing/src/main/java/org/apache/druid/query/search/SearchQuerySpec.java

@@ -21,6 +21,7 @@ package org.apache.druid.query.search;
 
 import com.fasterxml.jackson.annotation.JsonSubTypes;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import org.apache.druid.annotations.SubclassesMustOverrideEqualsAndHashCode;
 
 import javax.annotation.Nullable;
 
@@ -34,6 +35,7 @@ import javax.annotation.Nullable;
     @JsonSubTypes.Type(name = "regex", value = RegexSearchQuerySpec.class),
     @JsonSubTypes.Type(name = "all", value = AllSearchQuerySpec.class)
 })
+@SubclassesMustOverrideEqualsAndHashCode
 public interface SearchQuerySpec
 {
   boolean accept(@Nullable String dimVal);

processing/src/main/java/org/apache/druid/segment/filter/BoundFilter.java

@@ -19,6 +19,7 @@
 
 package org.apache.druid.segment.filter;
 
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Predicate;
 import com.google.common.base.Supplier;
 import it.unimi.dsi.fastutil.ints.IntList;
@@ -47,7 +48,6 @@ import org.apache.druid.segment.IntListUtils;
 import org.apache.druid.segment.column.BitmapIndex;
 import org.apache.druid.segment.vector.VectorColumnSelectorFactory;
 
-import java.util.Comparator;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
@@ -55,22 +55,13 @@ import java.util.Set;
 public class BoundFilter implements Filter
 {
   private final BoundDimFilter boundDimFilter;
-  private final Comparator<String> comparator;
   private final ExtractionFn extractionFn;
   private final FilterTuning filterTuning;
 
-  private final Supplier<DruidLongPredicate> longPredicateSupplier;
-  private final Supplier<DruidFloatPredicate> floatPredicateSupplier;
-  private final Supplier<DruidDoublePredicate> doublePredicateSupplier;
-
   public BoundFilter(final BoundDimFilter boundDimFilter)
   {
     this.boundDimFilter = boundDimFilter;
-    this.comparator = boundDimFilter.getOrdering();
     this.extractionFn = boundDimFilter.getExtractionFn();
-    this.longPredicateSupplier = boundDimFilter.getLongPredicateSupplier();
-    this.floatPredicateSupplier = boundDimFilter.getFloatPredicateSupplier();
-    this.doublePredicateSupplier = boundDimFilter.getDoublePredicateSupplier();
     this.filterTuning = boundDimFilter.getFilterTuning();
   }
 
@@ -81,7 +72,7 @@ public class BoundFilter implements Filter
       final BitmapIndex bitmapIndex = selector.getBitmapIndex(boundDimFilter.getDimension());
 
       if (bitmapIndex == null || bitmapIndex.getCardinality() == 0) {
-        if (doesMatch(null)) {
+        if (doesMatchNull()) {
           return bitmapResultFactory.wrapAllTrue(Filters.allTrue(selector));
         } else {
           return bitmapResultFactory.wrapAllFalse(Filters.allFalse(selector));
@@ -106,7 +97,7 @@ public class BoundFilter implements Filter
       final BitmapIndex bitmapIndex = indexSelector.getBitmapIndex(boundDimFilter.getDimension());
 
       if (bitmapIndex == null || bitmapIndex.getCardinality() == 0) {
-        return doesMatch(null) ? 1. : 0.;
+        return doesMatchNull() ? 1. : 0.;
       }
 
       return Filters.estimateSelectivity(
@@ -265,57 +256,15 @@ public class BoundFilter implements Filter
 
   private DruidPredicateFactory getPredicateFactory()
   {
-    return new DruidPredicateFactory()
+    return new BoundDimFilterDruidPredicateFactory(extractionFn, boundDimFilter);
-    {
-      @Override
-      public Predicate<String> makeStringPredicate()
-      {
-        if (extractionFn != null) {
-          return input -> doesMatch(extractionFn.apply(input));
-        }
-        return input -> doesMatch(input);
-
   }
 
-      @Override
+  private boolean doesMatchNull()
-      public DruidLongPredicate makeLongPredicate()
   {
-        if (extractionFn != null) {
+    return doesMatch(null, boundDimFilter);
-          return input -> doesMatch(extractionFn.apply(input));
-        }
-        if (boundDimFilter.getOrdering().equals(StringComparators.NUMERIC)) {
-          return longPredicateSupplier.get();
-        }
-        return input -> doesMatch(String.valueOf(input));
   }
 
-      @Override
+  private static boolean doesMatch(String input, BoundDimFilter boundDimFilter)
-      public DruidFloatPredicate makeFloatPredicate()
-      {
-        if (extractionFn != null) {
-          return input -> doesMatch(extractionFn.apply(input));
-        }
-        if (boundDimFilter.getOrdering().equals(StringComparators.NUMERIC)) {
-          return floatPredicateSupplier.get();
-        }
-        return input -> doesMatch(String.valueOf(input));
-      }
-
-      @Override
-      public DruidDoublePredicate makeDoublePredicate()
-      {
-        if (extractionFn != null) {
-          return input -> doesMatch(extractionFn.apply(input));
-        }
-        if (boundDimFilter.getOrdering().equals(StringComparators.NUMERIC)) {
-          return doublePredicateSupplier.get();
-        }
-        return input -> doesMatch(String.valueOf(input));
-      }
-    };
-  }
-
-  private boolean doesMatch(String input)
   {
     if (input == null) {
       return (!boundDimFilter.hasLowerBound()
@@ -328,10 +277,10 @@ public class BoundFilter implements Filter
     int lowerComparing = 1;
     int upperComparing = 1;
     if (boundDimFilter.hasLowerBound()) {
-      lowerComparing = comparator.compare(input, boundDimFilter.getLower());
+      lowerComparing = boundDimFilter.getOrdering().compare(input, boundDimFilter.getLower());
     }
     if (boundDimFilter.hasUpperBound()) {
-      upperComparing = comparator.compare(boundDimFilter.getUpper(), input);
+      upperComparing = boundDimFilter.getOrdering().compare(boundDimFilter.getUpper(), input);
     }
     if (boundDimFilter.isLowerStrict() && boundDimFilter.isUpperStrict()) {
       return ((lowerComparing > 0)) && (upperComparing > 0);
@@ -354,7 +303,6 @@ public class BoundFilter implements Filter
     }
     BoundFilter that = (BoundFilter) o;
     return Objects.equals(boundDimFilter, that.boundDimFilter) &&
-           Objects.equals(comparator, that.comparator) &&
            Objects.equals(extractionFn, that.extractionFn) &&
            Objects.equals(filterTuning, that.filterTuning);
   }
@@ -362,6 +310,91 @@ public class BoundFilter implements Filter
   @Override
   public int hashCode()
   {
-    return Objects.hash(boundDimFilter, comparator, extractionFn, filterTuning);
+    return Objects.hash(boundDimFilter, extractionFn, filterTuning);
+  }
+
+  @VisibleForTesting
+  static class BoundDimFilterDruidPredicateFactory implements DruidPredicateFactory
+  {
+    private final ExtractionFn extractionFn;
+    private final BoundDimFilter boundDimFilter;
+    private final Supplier<DruidLongPredicate> longPredicateSupplier;
+    private final Supplier<DruidFloatPredicate> floatPredicateSupplier;
+    private final Supplier<DruidDoublePredicate> doublePredicateSupplier;
+
+    BoundDimFilterDruidPredicateFactory(ExtractionFn extractionFn, BoundDimFilter boundDimFilter)
+    {
+      this.extractionFn = extractionFn;
+      this.boundDimFilter = boundDimFilter;
+      this.longPredicateSupplier = boundDimFilter.getLongPredicateSupplier();
+      this.floatPredicateSupplier = boundDimFilter.getFloatPredicateSupplier();
+      this.doublePredicateSupplier = boundDimFilter.getDoublePredicateSupplier();
+    }
+
+    @Override
+    public Predicate<String> makeStringPredicate()
+    {
+      if (extractionFn != null) {
+        return input -> doesMatch(extractionFn.apply(input), boundDimFilter);
+      }
+      return input -> doesMatch(input, boundDimFilter);
+
+    }
+
+    @Override
+    public DruidLongPredicate makeLongPredicate()
+    {
+      if (extractionFn != null) {
+        return input -> doesMatch(extractionFn.apply(input), boundDimFilter);
+      }
+      if (boundDimFilter.getOrdering().equals(StringComparators.NUMERIC)) {
+        return longPredicateSupplier.get();
+      }
+      return input -> doesMatch(String.valueOf(input), boundDimFilter);
+    }
+
+    @Override
+    public DruidFloatPredicate makeFloatPredicate()
+    {
+      if (extractionFn != null) {
+        return input -> doesMatch(extractionFn.apply(input), boundDimFilter);
+      }
+      if (boundDimFilter.getOrdering().equals(StringComparators.NUMERIC)) {
+        return floatPredicateSupplier.get();
+      }
+      return input -> doesMatch(String.valueOf(input), boundDimFilter);
+    }
+
+    @Override
+    public DruidDoublePredicate makeDoublePredicate()
+    {
+      if (extractionFn != null) {
+        return input -> doesMatch(extractionFn.apply(input), boundDimFilter);
+      }
+      if (boundDimFilter.getOrdering().equals(StringComparators.NUMERIC)) {
+        return doublePredicateSupplier.get();
+      }
+      return input -> doesMatch(String.valueOf(input), boundDimFilter);
+    }
+
+    @Override
+    public boolean equals(Object o)
+    {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      BoundDimFilterDruidPredicateFactory that = (BoundDimFilterDruidPredicateFactory) o;
+      return Objects.equals(extractionFn, that.extractionFn) &&
+             Objects.equals(boundDimFilter, that.boundDimFilter);
+    }
+
+    @Override
+    public int hashCode()
+    {
+      return Objects.hash(extractionFn, boundDimFilter);
+    }
   }
 }

processing/src/main/java/org/apache/druid/segment/filter/ColumnComparisonFilter.java

@@ -163,6 +163,26 @@ public class ColumnComparisonFilter implements Filter
     throw new UnsupportedOperationException();
   }
 
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ColumnComparisonFilter that = (ColumnComparisonFilter) o;
+    return Objects.equals(dimensions, that.dimensions);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(dimensions);
+  }
+
   private static class ColumnComparisonReaderFactory implements ColumnProcessorFactory<Supplier<String[]>>
   {
     private static final ColumnComparisonReaderFactory INSTANCE = new ColumnComparisonReaderFactory();

processing/src/main/java/org/apache/druid/segment/filter/DimensionPredicateFilter.java

@@ -19,6 +19,7 @@
 
 package org.apache.druid.segment.filter;
 
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
 import com.google.common.base.Predicate;
 import com.google.common.collect.ImmutableSet;
@@ -78,73 +79,7 @@ public class DimensionPredicateFilter implements Filter
     if (extractionFn == null) {
       this.predicateFactory = predicateFactory;
     } else {
-      this.predicateFactory = new DruidPredicateFactory()
+      this.predicateFactory = new DelegatingStringPredicateFactory(predicateFactory, extractionFn);
-      {
-        final Predicate<String> baseStringPredicate = predicateFactory.makeStringPredicate();
-
-        @Override
-        public Predicate<String> makeStringPredicate()
-        {
-          return input -> baseStringPredicate.apply(extractionFn.apply(input));
-        }
-
-        @Override
-        public DruidLongPredicate makeLongPredicate()
-        {
-          return new DruidLongPredicate()
-          {
-            @Override
-            public boolean applyLong(long input)
-            {
-              return baseStringPredicate.apply(extractionFn.apply(input));
-            }
-
-            @Override
-            public boolean applyNull()
-            {
-              return baseStringPredicate.apply(extractionFn.apply(null));
-            }
-          };
-        }
-
-        @Override
-        public DruidFloatPredicate makeFloatPredicate()
-        {
-          return new DruidFloatPredicate()
-          {
-            @Override
-            public boolean applyFloat(float input)
-            {
-              return baseStringPredicate.apply(extractionFn.apply(input));
-            }
-
-            @Override
-            public boolean applyNull()
-            {
-              return baseStringPredicate.apply(extractionFn.apply(null));
-            }
-          };
-        }
-
-        @Override
-        public DruidDoublePredicate makeDoublePredicate()
-        {
-          return new DruidDoublePredicate()
-          {
-            @Override
-            public boolean applyDouble(double input)
-            {
-              return baseStringPredicate.apply(extractionFn.apply(input));
-            }
-
-            @Override
-            public boolean applyNull()
-            {
-              return baseStringPredicate.apply(extractionFn.apply(null));
-            }
-          };
-        }
-      };
     }
   }
 
@@ -220,6 +155,104 @@ public class DimensionPredicateFilter implements Filter
     }
   }
 
+  @VisibleForTesting
+  static class DelegatingStringPredicateFactory implements DruidPredicateFactory
+  {
+    private final Predicate<String> baseStringPredicate;
+    private final DruidPredicateFactory predicateFactory;
+    private final ExtractionFn extractionFn;
+
+    DelegatingStringPredicateFactory(DruidPredicateFactory predicateFactory, ExtractionFn extractionFn)
+    {
+      this.predicateFactory = predicateFactory;
+      this.baseStringPredicate = predicateFactory.makeStringPredicate();
+      this.extractionFn = extractionFn;
+    }
+
+    @Override
+    public Predicate<String> makeStringPredicate()
+    {
+      return input -> baseStringPredicate.apply(extractionFn.apply(input));
+    }
+
+    @Override
+    public DruidLongPredicate makeLongPredicate()
+    {
+      return new DruidLongPredicate()
+      {
+        @Override
+        public boolean applyLong(long input)
+        {
+          return baseStringPredicate.apply(extractionFn.apply(input));
+        }
+
+        @Override
+        public boolean applyNull()
+        {
+          return baseStringPredicate.apply(extractionFn.apply(null));
+        }
+      };
+    }
+
+    @Override
+    public DruidFloatPredicate makeFloatPredicate()
+    {
+      return new DruidFloatPredicate()
+      {
+        @Override
+        public boolean applyFloat(float input)
+        {
+          return baseStringPredicate.apply(extractionFn.apply(input));
+        }
+
+        @Override
+        public boolean applyNull()
+        {
+          return baseStringPredicate.apply(extractionFn.apply(null));
+        }
+      };
+    }
+
+    @Override
+    public DruidDoublePredicate makeDoublePredicate()
+    {
+      return new DruidDoublePredicate()
+      {
+        @Override
+        public boolean applyDouble(double input)
+        {
+          return baseStringPredicate.apply(extractionFn.apply(input));
+        }
+
+        @Override
+        public boolean applyNull()
+        {
+          return baseStringPredicate.apply(extractionFn.apply(null));
+        }
+      };
+    }
+
+    @Override
+    public boolean equals(Object o)
+    {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      DelegatingStringPredicateFactory that = (DelegatingStringPredicateFactory) o;
+      return Objects.equals(predicateFactory, that.predicateFactory) &&
+             Objects.equals(extractionFn, that.extractionFn);
+    }
+
+    @Override
+    public int hashCode()
+    {
+      return Objects.hash(predicateFactory, extractionFn);
+    }
+  }
+
   @Override
   public boolean equals(Object o)
   {

processing/src/main/java/org/apache/druid/segment/filter/ExpressionFilter.java

@@ -39,6 +39,7 @@ import org.apache.druid.segment.ColumnValueSelector;
 import org.apache.druid.segment.virtual.ExpressionSelectors;
 
 import java.util.Arrays;
+import java.util.Objects;
 import java.util.Set;
 
 public class ExpressionFilter implements Filter
@@ -183,4 +184,34 @@ public class ExpressionFilter implements Filter
     // We could support this, but need a good approach to rewriting the identifiers within an expression.
     return false;
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    ExpressionFilter that = (ExpressionFilter) o;
+    return Objects.equals(expr, that.expr) &&
+           Objects.equals(filterTuning, that.filterTuning);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(expr, filterTuning);
+  }
+
+  @Override
+  public String toString()
+  {
+    return "ExpressionFilter{" +
+           "expr=" + expr +
+           ", requiredBindings=" + requiredBindings +
+           ", filterTuning=" + filterTuning +
+           '}';
+  }
 }

processing/src/main/java/org/apache/druid/segment/filter/FalseFilter.java

@@ -117,4 +117,16 @@ public class FalseFilter implements Filter
   {
     return "false";
   }
+
+  @Override
+  public final int hashCode()
+  {
+    return FalseFilter.class.hashCode();
+  }
+
+  @Override
+  public final boolean equals(Object obj)
+  {
+    return obj instanceof FalseFilter;
+  }
 }

processing/src/main/java/org/apache/druid/segment/filter/InFilter.java

@@ -19,6 +19,7 @@
 
 package org.apache.druid.segment.filter;
 
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Predicate;
 import com.google.common.base.Supplier;
 import com.google.common.collect.ImmutableSet;
@@ -133,14 +134,9 @@ public class InFilter implements Filter
 
   private IntIterable getBitmapIndexIterable(final BitmapIndex bitmapIndex)
   {
-    return new IntIterable()
+    return () -> new IntIterator()
     {
-      @Override
+      final Iterator<String> iterator = values.iterator();
-      public IntIterator iterator()
-      {
-        return new IntIterator()
-        {
-          Iterator<String> iterator = values.iterator();
 
       @Override
       public boolean hasNext()
@@ -155,8 +151,6 @@ public class InFilter implements Filter
       }
     };
   }
-    };
-  }
 
   @Override
   public ValueMatcher makeMatcher(ColumnSelectorFactory factory)
@@ -231,8 +225,55 @@ public class InFilter implements Filter
 
   private DruidPredicateFactory getPredicateFactory()
   {
-    return new DruidPredicateFactory()
+    return new InFilterDruidPredicateFactory(extractionFn, values, longPredicateSupplier, floatPredicateSupplier, doublePredicateSupplier);
+  }
+
+  @Override
+  public boolean equals(Object o)
   {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    InFilter inFilter = (InFilter) o;
+    return Objects.equals(dimension, inFilter.dimension) &&
+           Objects.equals(values, inFilter.values) &&
+           Objects.equals(extractionFn, inFilter.extractionFn) &&
+           Objects.equals(filterTuning, inFilter.filterTuning);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(dimension, values, extractionFn, filterTuning);
+  }
+
+  @VisibleForTesting
+  static class InFilterDruidPredicateFactory implements DruidPredicateFactory
+  {
+    private final ExtractionFn extractionFn;
+    private final Set<String> values;
+    private final Supplier<DruidLongPredicate> longPredicateSupplier;
+    private final Supplier<DruidFloatPredicate> floatPredicateSupplier;
+    private final Supplier<DruidDoublePredicate> doublePredicateSupplier;
+
+    InFilterDruidPredicateFactory(
+        ExtractionFn extractionFn,
+        Set<String> values,
+        Supplier<DruidLongPredicate> longPredicateSupplier,
+        Supplier<DruidFloatPredicate> floatPredicateSupplier,
+        Supplier<DruidDoublePredicate> doublePredicateSupplier
+    )
+    {
+      this.extractionFn = extractionFn;
+      this.values = values;
+      this.longPredicateSupplier = longPredicateSupplier;
+      this.floatPredicateSupplier = floatPredicateSupplier;
+      this.doublePredicateSupplier = doublePredicateSupplier;
+    }
+
     @Override
     public Predicate<String> makeStringPredicate()
     {
@@ -271,8 +312,6 @@ public class InFilter implements Filter
       }
       return input -> doublePredicateSupplier.get().applyDouble(input);
     }
-    };
-  }
 
     @Override
     public boolean equals(Object o)
@@ -283,16 +322,15 @@ public class InFilter implements Filter
       if (o == null || getClass() != o.getClass()) {
         return false;
       }
-    InFilter inFilter = (InFilter) o;
+      InFilterDruidPredicateFactory that = (InFilterDruidPredicateFactory) o;
-    return Objects.equals(dimension, inFilter.dimension) &&
+      return Objects.equals(extractionFn, that.extractionFn) &&
-           Objects.equals(values, inFilter.values) &&
+             Objects.equals(values, that.values);
-           Objects.equals(extractionFn, inFilter.extractionFn) &&
-           Objects.equals(filterTuning, inFilter.filterTuning);
     }
 
     @Override
     public int hashCode()
     {
-    return Objects.hash(dimension, values, extractionFn, filterTuning);
+      return Objects.hash(extractionFn, values);
+    }
   }
 }

processing/src/main/java/org/apache/druid/segment/filter/JavaScriptFilter.java

@@ -31,6 +31,7 @@ import org.apache.druid.segment.ColumnSelector;
 import org.apache.druid.segment.ColumnSelectorFactory;
 import org.mozilla.javascript.Context;
 
+import java.util.Objects;
 import java.util.Set;
 
 public class JavaScriptFilter implements Filter
@@ -116,4 +117,25 @@ public class JavaScriptFilter implements Filter
   {
     return ImmutableSet.of(dimension);
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    JavaScriptFilter that = (JavaScriptFilter) o;
+    return Objects.equals(dimension, that.dimension) &&
+           Objects.equals(predicateFactory, that.predicateFactory) &&
+           Objects.equals(filterTuning, that.filterTuning);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(dimension, predicateFactory, filterTuning);
+  }
 }

processing/src/main/java/org/apache/druid/segment/filter/RegexFilter.java

@@ -19,6 +19,7 @@
 
 package org.apache.druid.segment.filter;
 
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Predicate;
 import org.apache.druid.java.util.common.IAE;
 import org.apache.druid.query.extraction.ExtractionFn;
@@ -48,8 +49,23 @@ public class RegexFilter extends DimensionPredicateFilter
   {
     super(
         dimension,
-        new DruidPredicateFactory()
+        new PatternDruidPredicateFactory(pattern),
+        extractionFn,
+        filterTuning
+    );
+    this.pattern = pattern;
+  }
+
+  @VisibleForTesting
+  static class PatternDruidPredicateFactory implements DruidPredicateFactory
   {
+    private final Pattern pattern;
+
+    PatternDruidPredicateFactory(Pattern pattern)
+    {
+      this.pattern = pattern;
+    }
+
     @Override
     public Predicate<String> makeStringPredicate()
     {
@@ -74,6 +90,34 @@ public class RegexFilter extends DimensionPredicateFilter
       return input -> pattern.matcher(String.valueOf(input)).find();
     }
 
+    @Override
+    public boolean equals(Object o)
+    {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      PatternDruidPredicateFactory that = (PatternDruidPredicateFactory) o;
+      return Objects.equals(pattern.toString(), that.pattern.toString());
+    }
+
+    @Override
+    public int hashCode()
+    {
+      return Objects.hash(pattern.toString());
+    }
+
+    @Override
+    public String toString()
+    {
+      return "RegexFilter$PatternDruidPredicateFactory{" +
+             "pattern='" + pattern + '\'' +
+             '}';
+    }
+  }
+
   @Override
   public String toString()
   {
@@ -81,12 +125,6 @@ public class RegexFilter extends DimensionPredicateFilter
            "pattern='" + pattern + '\'' +
            '}';
   }
-        },
-        extractionFn,
-        filterTuning
-    );
-    this.pattern = pattern;
-  }
 
   @Override
   public boolean supportsRequiredColumnRewrite()

processing/src/main/java/org/apache/druid/segment/filter/SearchQueryFilter.java

@@ -21,6 +21,7 @@ package org.apache.druid.segment.filter;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Predicate;
 import org.apache.druid.java.util.common.IAE;
 import org.apache.druid.query.extraction.ExtractionFn;
@@ -51,40 +52,7 @@ public class SearchQueryFilter extends DimensionPredicateFilter
   {
     super(
         dimension,
-        new DruidPredicateFactory()
+        new SearchQueryDruidPredicateFactory(query),
-        {
-          @Override
-          public Predicate<String> makeStringPredicate()
-          {
-            return input -> query.accept(input);
-          }
-
-          @Override
-          public DruidLongPredicate makeLongPredicate()
-          {
-            return input -> query.accept(String.valueOf(input));
-          }
-
-          @Override
-          public DruidFloatPredicate makeFloatPredicate()
-          {
-            return input -> query.accept(String.valueOf(input));
-          }
-
-          @Override
-          public DruidDoublePredicate makeDoublePredicate()
-          {
-            return input -> query.accept(String.valueOf(input));
-          }
-
-          @Override
-          public String toString()
-          {
-            return "SearchFilter{" +
-                   "query='" + query + '\'' +
-                   '}';
-          }
-        },
         extractionFn,
         filterTuning
     );
@@ -119,6 +87,14 @@ public class SearchQueryFilter extends DimensionPredicateFilter
     );
   }
 
+  @Override
+  public String toString()
+  {
+    return "SearchFilter{" +
+           "query='" + query + '\'' +
+           '}';
+  }
+
   @Override
   public boolean equals(Object o)
   {
@@ -140,4 +116,58 @@ public class SearchQueryFilter extends DimensionPredicateFilter
   {
     return Objects.hash(super.hashCode(), query);
   }
+
+  @VisibleForTesting
+  static class SearchQueryDruidPredicateFactory implements DruidPredicateFactory
+  {
+    private final SearchQuerySpec query;
+
+    SearchQueryDruidPredicateFactory(SearchQuerySpec query)
+    {
+      this.query = query;
+    }
+
+    @Override
+    public Predicate<String> makeStringPredicate()
+    {
+      return input -> query.accept(input);
+    }
+
+    @Override
+    public DruidLongPredicate makeLongPredicate()
+    {
+      return input -> query.accept(String.valueOf(input));
+    }
+
+    @Override
+    public DruidFloatPredicate makeFloatPredicate()
+    {
+      return input -> query.accept(String.valueOf(input));
+    }
+
+    @Override
+    public DruidDoublePredicate makeDoublePredicate()
+    {
+      return input -> query.accept(String.valueOf(input));
+    }
+
+    @Override
+    public boolean equals(Object o)
+    {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      SearchQueryDruidPredicateFactory that = (SearchQueryDruidPredicateFactory) o;
+      return Objects.equals(query, that.query);
+    }
+
+    @Override
+    public int hashCode()
+    {
+      return Objects.hash(query);
+    }
+  }
 }

processing/src/main/java/org/apache/druid/segment/filter/SpatialFilter.java

@@ -19,6 +19,7 @@
 
 package org.apache.druid.segment.filter;
 
+import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
 import com.google.common.base.Predicate;
 import com.google.common.collect.ImmutableSet;
@@ -37,6 +38,7 @@ import org.apache.druid.segment.ColumnSelector;
 import org.apache.druid.segment.ColumnSelectorFactory;
 import org.apache.druid.segment.incremental.SpatialDimensionRowTransformer;
 
+import java.util.Objects;
 import java.util.Set;
 
 /**
@@ -71,41 +73,8 @@ public class SpatialFilter implements Filter
     return Filters.makeValueMatcher(
         factory,
         dimension,
-        new DruidPredicateFactory()
+        new BoundDruidPredicateFactory(bound)
-        {
-          @Override
-          public Predicate<String> makeStringPredicate()
-          {
-            return input -> {
-              if (input == null) {
-                return false;
-              }
-              final float[] coordinate = SpatialDimensionRowTransformer.decode(input);
-              return bound.contains(coordinate);
-            };
-          }
 
-          @Override
-          public DruidLongPredicate makeLongPredicate()
-          {
-            // SpatialFilter does not currently support longs
-            return DruidLongPredicate.ALWAYS_FALSE;
-          }
-
-          @Override
-          public DruidFloatPredicate makeFloatPredicate()
-          {
-            // SpatialFilter does not currently support floats
-            return DruidFloatPredicate.ALWAYS_FALSE;
-          }
-
-          @Override
-          public DruidDoublePredicate makeDoublePredicate()
-          {
-            // SpatialFilter does not currently support doubles
-            return DruidDoublePredicate.ALWAYS_FALSE;
-          }
-        }
     );
   }
 
@@ -139,4 +108,88 @@ public class SpatialFilter implements Filter
     // selectivity estimation for multi-value columns is not implemented yet.
     throw new UnsupportedOperationException();
   }
+
+  @Override
+  public boolean equals(Object o)
+  {
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
+    SpatialFilter that = (SpatialFilter) o;
+    return Objects.equals(dimension, that.dimension) &&
+           Objects.equals(bound, that.bound) &&
+           Objects.equals(filterTuning, that.filterTuning);
+  }
+
+  @Override
+  public int hashCode()
+  {
+    return Objects.hash(dimension, bound, filterTuning);
+  }
+
+  @VisibleForTesting
+  static class BoundDruidPredicateFactory implements DruidPredicateFactory
+  {
+    private final Bound bound;
+
+    BoundDruidPredicateFactory(Bound bound)
+    {
+      this.bound = bound;
+    }
+
+    @Override
+    public Predicate<String> makeStringPredicate()
+    {
+      return input -> {
+        if (input == null) {
+          return false;
+        }
+        final float[] coordinate = SpatialDimensionRowTransformer.decode(input);
+        return bound.contains(coordinate);
+      };
+    }
+
+    @Override
+    public DruidLongPredicate makeLongPredicate()
+    {
+      // SpatialFilter does not currently support longs
+      return DruidLongPredicate.ALWAYS_FALSE;
+    }
+
+    @Override
+    public DruidFloatPredicate makeFloatPredicate()
+    {
+      // SpatialFilter does not currently support floats
+      return DruidFloatPredicate.ALWAYS_FALSE;
+    }
+
+    @Override
+    public DruidDoublePredicate makeDoublePredicate()
+    {
+      // SpatialFilter does not currently support doubles
+      return DruidDoublePredicate.ALWAYS_FALSE;
+    }
+
+    @Override
+    public boolean equals(Object o)
+    {
+      if (this == o) {
+        return true;
+      }
+      if (o == null || getClass() != o.getClass()) {
+        return false;
+      }
+      BoundDruidPredicateFactory that = (BoundDruidPredicateFactory) o;
+      return Objects.equals(bound, that.bound);
+    }
+
+    @Override
+    public int hashCode()
+    {
+      return Objects.hash(bound);
+    }
+  }
 }

processing/src/main/java/org/apache/druid/segment/filter/TrueFilter.java

@@ -119,4 +119,16 @@ public class TrueFilter implements Filter
   {
     return "true";
   }
+
+  @Override
+  public final int hashCode()
+  {
+    return TrueFilter.class.hashCode();
+  }
+
+  @Override
+  public final boolean equals(Object obj)
+  {
+    return obj instanceof TrueFilter;
+  }
 }

processing/src/main/java/org/apache/druid/segment/join/HashJoinSegmentStorageAdapter.java

@@ -21,6 +21,7 @@ package org.apache.druid.segment.join;
 
 import com.google.common.collect.Iterables;
 import com.google.common.collect.Lists;
+import org.apache.druid.java.util.common.ISE;
 import org.apache.druid.java.util.common.granularity.Granularity;
 import org.apache.druid.java.util.common.guava.Sequence;
 import org.apache.druid.java.util.common.guava.Sequences;
@@ -46,6 +47,7 @@ import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Objects;
 import java.util.Optional;
 import java.util.Set;
 
@@ -207,6 +209,13 @@ public class HashJoinSegmentStorageAdapter implements StorageAdapter
       @Nullable final QueryMetrics<?> queryMetrics
   )
   {
+    if (!Objects.equals(joinFilterPreAnalysis.getOriginalFilter(), filter)) {
+      throw new ISE(
+          "Filter provided to cursor [%s] does not match join pre-analysis filter [%s]",
+          filter,
+          joinFilterPreAnalysis.getOriginalFilter()
+      );
+    }
     final List<VirtualColumn> preJoinVirtualColumns = new ArrayList<>();
     final List<VirtualColumn> postJoinVirtualColumns = new ArrayList<>();
 

processing/src/test/java/org/apache/druid/annotations/SubclassesMustOverrideEqualsAndHashCodeTest.java

@@ -0,0 +1,66 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.druid.annotations;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.reflections.Reflections;
+import org.reflections.util.ClasspathHelper;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.Modifier;
+import java.net.URL;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class SubclassesMustOverrideEqualsAndHashCodeTest
+{
+  @Test
+  public void testEqualsAndHashCode() throws NoSuchMethodException
+  {
+    // Exclude test classes
+    Set<URL> urls = ClasspathHelper.forPackage("org.apache.druid")
+                                   .stream()
+                                   .filter(url -> !url.toString().contains("/target/test-classes"))
+                                   .collect(Collectors.toSet());
+    Reflections reflections = new Reflections(urls);
+    Set<Class<?>> classes = reflections.getTypesAnnotatedWith(SubclassesMustOverrideEqualsAndHashCode.class);
+    Set<String> failed = new HashSet<>();
+    for (Class<?> clazz : classes) {
+      if (clazz.isInterface() || Modifier.isAbstract(clazz.getModifiers())) {
+        continue;
+      }
+      Method m = clazz.getMethod("hashCode");
+      String className = clazz.getName();
+      try {
+        Assert.assertNotSame(className + " does not implment hashCode", Object.class, m.getDeclaringClass());
+      }
+      catch (AssertionError e) {
+        failed.add(className);
+      }
+    }
+    if (!failed.isEmpty()) {
+      System.err.println("failed classes [" + failed.size() + "] : ");
+      failed.forEach(c -> System.err.println("\t" + c));
+      Assert.fail();
+    }
+  }
+}

processing/src/test/java/org/apache/druid/collections/spatial/search/PolygonBoundTest.java

@@ -19,6 +19,7 @@
 
 package org.apache.druid.collections.spatial.search;
 
+import nl.jqno.equalsverifier.EqualsVerifier;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -77,4 +78,12 @@ public class PolygonBoundTest
     Assert.assertTrue(rightTriangle.contains(new float[]{3f, 3f - delta}));
     Assert.assertFalse(rightTriangle.contains(new float[]{3f, 3f + delta}));
   }
+
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(PolygonBound.class)
+                  .usingGetClass()
+                  .verify();
+  }
 }

processing/src/test/java/org/apache/druid/collections/spatial/search/RectangularBoundTest.java

@@ -19,6 +19,7 @@
 
 package org.apache.druid.collections.spatial.search;
 
+import nl.jqno.equalsverifier.EqualsVerifier;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -46,4 +47,12 @@ public class RectangularBoundTest
         new RectangularBound(new float[]{1F, 1F}, new float[]{2F, 2F}, 2).getCacheKey()
     ));
   }
+
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(RectangularBound.class)
+                  .usingGetClass()
+                  .verify();
+  }
 }

processing/src/test/java/org/apache/druid/query/dimension/RegexFilteredDimensionSpecTest.java

@@ -23,6 +23,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import org.apache.druid.segment.DimensionSelector;
 import org.apache.druid.segment.TestHelper;
 import org.apache.druid.segment.data.IndexedInts;
+import org.apache.druid.testing.InitializedNullHandlingTest;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -30,7 +31,7 @@ import java.util.Arrays;
 
 /**
  */
-public class RegexFilteredDimensionSpecTest
+public class RegexFilteredDimensionSpecTest extends InitializedNullHandlingTest
 {
 
   @Test

processing/src/test/java/org/apache/druid/query/expression/TimestampCeilExprMacroTest.java

@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.druid.query.expression;
+
+import nl.jqno.equalsverifier.EqualsVerifier;
+import org.junit.Test;
+
+public class TimestampCeilExprMacroTest
+{
+  @Test
+  public void testEqualsContractForTimestampCeilExpr()
+  {
+    EqualsVerifier.forClass(TimestampCeilExprMacro.TimestampCeilExpr.class)
+                  .withIgnoredFields("analyzeInputsSupplier")
+                  .usingGetClass()
+                  .verify();
+  }
+
+  @Test
+  public void testEqualsContractForTimestampCeilDynamicExpr()
+  {
+    EqualsVerifier.forClass(TimestampCeilExprMacro.TimestampCeilDynamicExpr.class)
+                  .withIgnoredFields("analyzeInputsSupplier")
+                  .usingGetClass()
+                  .verify();
+  }
+}

processing/src/test/java/org/apache/druid/query/expression/TimestampFloorExprMacroTest.java

@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.druid.query.expression;
+
+import nl.jqno.equalsverifier.EqualsVerifier;
+import org.junit.Test;
+
+public class TimestampFloorExprMacroTest
+{
+  @Test
+  public void testEqualsContractForTimestampFloorExpr()
+  {
+    EqualsVerifier.forClass(TimestampFloorExprMacro.TimestampFloorExpr.class)
+                  .usingGetClass()
+                  .withIgnoredFields("analyzeInputsSupplier")
+                  .verify();
+  }
+
+  @Test
+  public void testEqualsContractForTimestampFloorDynamicExpr()
+  {
+    EqualsVerifier.forClass(TimestampFloorExprMacro.TimestampFloorDynamicExpr.class)
+                  .withIgnoredFields("analyzeInputsSupplier")
+                  .usingGetClass()
+                  .verify();
+  }
+}

processing/src/test/java/org/apache/druid/query/expression/TrimExprMacroTest.java

@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.druid.query.expression;
+
+import nl.jqno.equalsverifier.EqualsVerifier;
+import org.junit.Test;
+
+public class TrimExprMacroTest
+{
+  @Test
+  public void testEqualsContractForTrimStaticCharsExpr()
+  {
+    EqualsVerifier.forClass(TrimExprMacro.TrimStaticCharsExpr.class)
+                  .withIgnoredFields("analyzeInputsSupplier")
+                  .usingGetClass()
+                  .verify();
+  }
+
+  @Test
+  public void testEqualsContractForTrimDynamicCharsExpr()
+  {
+    EqualsVerifier.forClass(TrimExprMacro.TrimDynamicCharsExpr.class)
+                  .usingGetClass()
+                  .verify();
+  }
+}

processing/src/test/java/org/apache/druid/query/extraction/CascadeExtractionFnTest.java

@@ -23,8 +23,10 @@ import com.fasterxml.jackson.databind.InjectableValues;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Sets;
+import nl.jqno.equalsverifier.EqualsVerifier;
 import org.apache.druid.jackson.DefaultObjectMapper;
 import org.apache.druid.js.JavaScriptConfig;
+import org.apache.druid.testing.InitializedNullHandlingTest;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -32,7 +34,7 @@ import java.util.Arrays;
 import java.util.LinkedHashSet;
 import java.util.Set;
 
-public class CascadeExtractionFnTest
+public class CascadeExtractionFnTest extends InitializedNullHandlingTest
 {
   private static final String[] PATHS = {
       "/druid/prod/historical",
@@ -205,4 +207,38 @@ public class CascadeExtractionFnTest
         )
     );
   }
+
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(CascadeExtractionFn.class)
+                  .withPrefabValues(
+                      CascadeExtractionFn.ChainedExtractionFn.class,
+                      CascadeExtractionFn.DEFAULT_CHAINED_EXTRACTION_FN,
+                      new CascadeExtractionFn.ChainedExtractionFn(
+                          StrlenExtractionFn.instance(),
+                          CascadeExtractionFn.DEFAULT_CHAINED_EXTRACTION_FN
+                      )
+                  )
+                  .withNonnullFields("chainedExtractionFn")
+                  .usingGetClass()
+                  .verify();
+  }
+
+  @Test
+  public void testEqualsContractForChainedExtractionFn()
+  {
+    EqualsVerifier.forClass(CascadeExtractionFn.ChainedExtractionFn.class)
+                  .withPrefabValues(
+                      CascadeExtractionFn.ChainedExtractionFn.class,
+                      CascadeExtractionFn.DEFAULT_CHAINED_EXTRACTION_FN,
+                      new CascadeExtractionFn.ChainedExtractionFn(
+                          StrlenExtractionFn.instance(),
+                          CascadeExtractionFn.DEFAULT_CHAINED_EXTRACTION_FN
+                      )
+                  )
+                  .withNonnullFields("fn")
+                  .usingGetClass()
+                  .verify();
+  }
 }

processing/src/test/java/org/apache/druid/query/extraction/LowerExtractionFnTest.java

@@ -19,6 +19,7 @@
 
 package org.apache.druid.query.extraction;
 
+import nl.jqno.equalsverifier.EqualsVerifier;
 import org.apache.druid.common.config.NullHandling;
 import org.junit.Assert;
 import org.junit.Test;
@@ -45,4 +46,12 @@ public class LowerExtractionFnTest
     Assert.assertArrayEquals(extractionFn.getCacheKey(), extractionFn.getCacheKey());
     Assert.assertFalse(Arrays.equals(extractionFn.getCacheKey(), new UpperExtractionFn(null).getCacheKey()));
   }
+
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(LowerExtractionFn.class)
+                  .usingGetClass()
+                  .verify();
+  }
 }

processing/src/test/java/org/apache/druid/query/extraction/StrlenExtractionFnTest.java

@@ -20,6 +20,7 @@
 package org.apache.druid.query.extraction;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
+import nl.jqno.equalsverifier.EqualsVerifier;
 import org.apache.druid.common.config.NullHandling;
 import org.apache.druid.jackson.DefaultObjectMapper;
 import org.junit.Assert;
@@ -63,4 +64,10 @@ public class StrlenExtractionFnTest
     Assert.assertTrue(extractionFn == extractionFnRoundTrip);
     Assert.assertTrue(extractionFn == StrlenExtractionFn.instance());
   }
+
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(StrlenExtractionFn.class).verify();
+  }
 }

processing/src/test/java/org/apache/druid/query/extraction/UpperExtractionFnTest.java

@@ -19,6 +19,7 @@
 
 package org.apache.druid.query.extraction;
 
+import nl.jqno.equalsverifier.EqualsVerifier;
 import org.apache.druid.common.config.NullHandling;
 import org.junit.Assert;
 import org.junit.Test;
@@ -45,4 +46,12 @@ public class UpperExtractionFnTest
     Assert.assertArrayEquals(extractionFn.getCacheKey(), extractionFn.getCacheKey());
     Assert.assertFalse(Arrays.equals(extractionFn.getCacheKey(), new LowerExtractionFn(null).getCacheKey()));
   }
+
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(UpperExtractionFn.class)
+                  .usingGetClass()
+                  .verify();
+  }
 }

processing/src/test/java/org/apache/druid/query/filter/LikeDimFilterTest.java

@@ -24,13 +24,14 @@ import com.google.common.collect.Sets;
 import nl.jqno.equalsverifier.EqualsVerifier;
 import org.apache.druid.jackson.DefaultObjectMapper;
 import org.apache.druid.query.extraction.SubstringDimExtractionFn;
+import org.apache.druid.testing.InitializedNullHandlingTest;
 import org.junit.Assert;
 import org.junit.Test;
 
 import java.io.IOException;
 import java.util.Arrays;
 
-public class LikeDimFilterTest
+public class LikeDimFilterTest extends InitializedNullHandlingTest
 {
   @Test
   public void testSerde() throws IOException
@@ -70,6 +71,15 @@ public class LikeDimFilterTest
     Assert.assertEquals(filter.getRequiredColumns(), Sets.newHashSet("foo"));
   }
 
+  @Test
+  public void testEqualsContractForExtractionFnDruidPredicateFactory()
+  {
+    EqualsVerifier.forClass(LikeDimFilter.LikeMatcher.PatternDruidPredicateFactory.class)
+                  .withNonnullFields("pattern")
+                  .usingGetClass()
+                  .verify();
+  }
+
   @Test
   public void test_LikeMatcher_equals()
   {

processing/src/test/java/org/apache/druid/query/filter/SelectorPredicateFactoryTest.java

@@ -0,0 +1,35 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.druid.query.filter;
+
+import nl.jqno.equalsverifier.EqualsVerifier;
+import org.junit.Test;
+
+public class SelectorPredicateFactoryTest
+{
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(SelectorPredicateFactory.class)
+                  .withIgnoredFields("initLock", "longPredicate", "floatPredicate", "doublePredicate")
+                  .usingGetClass()
+                  .verify();
+  }
+}

processing/src/test/java/org/apache/druid/segment/filter/BoundFilterTest.java

@@ -757,7 +757,15 @@ public class BoundFilterTest extends BaseFilterTest
   {
     EqualsVerifier.forClass(BoundFilter.class)
                   .usingGetClass()
-                  .withNonnullFields("boundDimFilter", "comparator")
+                  .withNonnullFields("boundDimFilter")
+                  .verify();
+  }
+
+  @Test
+  public void test_equals_boundDimFilterDruidPredicateFactory()
+  {
+    EqualsVerifier.forClass(BoundFilter.BoundDimFilterDruidPredicateFactory.class)
+                  .usingGetClass()
                   .withIgnoredFields("longPredicateSupplier", "floatPredicateSupplier", "doublePredicateSupplier")
                   .verify();
   }

processing/src/test/java/org/apache/druid/segment/filter/ColumnComparisonFilterTest.java

@@ -22,6 +22,7 @@ package org.apache.druid.segment.filter;
 import com.google.common.base.Function;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+import nl.jqno.equalsverifier.EqualsVerifier;
 import org.apache.druid.common.config.NullHandling;
 import org.apache.druid.data.input.InputRow;
 import org.apache.druid.data.input.impl.DimensionsSpec;
@@ -192,4 +193,12 @@ public class ColumnComparisonFilterTest extends BaseFilterTest
         new ExtractionDimensionSpec("dim1", "dim1", lookupFn)
     )), ImmutableList.of("2", "5", "7", "8"));
   }
+
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(ColumnComparisonFilter.class)
+                  .usingGetClass()
+                  .verify();
+  }
 }

processing/src/test/java/org/apache/druid/segment/filter/DimensionPredicateFilterTest.java

@@ -0,0 +1,44 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.druid.segment.filter;
+
+import nl.jqno.equalsverifier.EqualsVerifier;
+import org.junit.Test;
+
+public class DimensionPredicateFilterTest
+{
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(DimensionPredicateFilter.class)
+                  .withIgnoredFields("predicateFactory")
+                  .usingGetClass()
+                  .verify();
+  }
+
+  @Test
+  public void testEqualsContractForDelegatingStringPredicateFactory()
+  {
+    EqualsVerifier.forClass(DimensionPredicateFilter.DelegatingStringPredicateFactory.class)
+                  .withIgnoredFields("baseStringPredicate")
+                  .usingGetClass()
+                  .verify();
+  }
+}

processing/src/test/java/org/apache/druid/segment/filter/ExpressionFilterTest.java

@@ -23,6 +23,7 @@ import com.google.common.base.Function;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Sets;
+import nl.jqno.equalsverifier.EqualsVerifier;
 import org.apache.druid.common.config.NullHandling;
 import org.apache.druid.data.input.InputRow;
 import org.apache.druid.data.input.impl.DimensionsSpec;
@@ -279,6 +280,15 @@ public class ExpressionFilterTest extends BaseFilterTest
     Assert.assertEquals(edf("missing == ''").getRequiredColumns(), Sets.newHashSet("missing"));
   }
 
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(ExpressionFilter.class)
+                  .withIgnoredFields("requiredBindings")
+                  .usingGetClass()
+                  .verify();
+  }
+
   @Test
   public void testRequiredColumnRewrite()
   {

processing/src/test/java/org/apache/druid/segment/filter/FalseFilterTest.java

@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.druid.segment.filter;
+
+import nl.jqno.equalsverifier.EqualsVerifier;
+import org.junit.Test;
+
+public class FalseFilterTest
+{
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(FalseFilter.class)
+                  .verify();
+  }
+}

processing/src/test/java/org/apache/druid/segment/filter/InFilterTest.java

@@ -388,6 +388,16 @@ public class InFilterTest extends BaseFilterTest
                   .verify();
   }
 
+  @Test
+  public void test_equals_forInFilterDruidPredicateFactory()
+  {
+    EqualsVerifier.forClass(InFilter.InFilterDruidPredicateFactory.class)
+                  .usingGetClass()
+                  .withNonnullFields("values")
+                  .withIgnoredFields("longPredicateSupplier", "floatPredicateSupplier", "doublePredicateSupplier")
+                  .verify();
+  }
+
   private DimFilter toInFilter(String dim)
   {
     List<String> emptyList = new ArrayList<>();

processing/src/test/java/org/apache/druid/segment/filter/JavaScriptFilterTest.java

@@ -22,6 +22,7 @@ package org.apache.druid.segment.filter;
 import com.google.common.base.Function;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+import nl.jqno.equalsverifier.EqualsVerifier;
 import org.apache.druid.common.config.NullHandling;
 import org.apache.druid.java.util.common.Pair;
 import org.apache.druid.js.JavaScriptConfig;
@@ -228,6 +229,14 @@ public class JavaScriptFilterTest extends BaseFilterTest
     assertFilterMatchesSkipVectorize(newJavaScriptDimFilter("l0", jsNumericValueFilter("9001"), null), ImmutableList.of("4"));
   }
 
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(JavaScriptFilter.class)
+                  .usingGetClass()
+                  .verify();
+  }
+
   @Test
   public void testRequiredColumnRewrite()
   {

processing/src/test/java/org/apache/druid/segment/filter/RegexFilterTest.java

@@ -146,6 +146,25 @@ public class RegexFilterTest extends BaseFilterTest
     assertFilterMatches(new RegexDimFilter("dim4", "a.*", changeNullFn), ImmutableList.of());
   }
 
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(RegexFilter.class)
+                  .withNonnullFields("pattern")
+                  .withIgnoredFields("predicateFactory")
+                  .usingGetClass()
+                  .verify();
+  }
+
+  @Test
+  public void testEqualsContractForPatternDruidPredicateFactory()
+  {
+    EqualsVerifier.forClass(RegexFilter.PatternDruidPredicateFactory.class)
+                  .withNonnullFields("pattern")
+                  .usingGetClass()
+                  .verify();
+  }
+
   @Test
   public void testRequiredColumnRewrite()
   {
@@ -162,14 +181,4 @@ public class RegexFilterTest extends BaseFilterTest
     expectedException.expectMessage("Received a non-applicable rewrite: {invalidName=dim1}, filter's dimension: dim0");
     filter.rewriteRequiredColumns(ImmutableMap.of("invalidName", "dim1"));
   }
-
-  @Test
-  public void test_equals()
-  {
-    EqualsVerifier.forClass(RegexFilter.class)
-                  .usingGetClass()
-                  .withNonnullFields("dimension", "pattern")
-                  .withIgnoredFields("predicateFactory")
-                  .verify();
-  }
 }

processing/src/test/java/org/apache/druid/segment/filter/SearchQueryFilterTest.java

@@ -183,6 +183,23 @@ public class SearchQueryFilterTest extends BaseFilterTest
     assertFilterMatches(new SearchQueryDimFilter("dim4", specForValue("a"), changeNullFn), ImmutableList.of());
   }
 
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(SearchQueryFilter.class)
+                  .withIgnoredFields("predicateFactory")
+                  .usingGetClass()
+                  .verify();
+  }
+
+  @Test
+  public void testEqualsContractForSearchQueryDruidPredicateFactory()
+  {
+    EqualsVerifier.forClass(SearchQueryFilter.SearchQueryDruidPredicateFactory.class)
+                  .usingGetClass()
+                  .verify();
+  }
+
   @Test
   public void testRequiredColumnRewrite()
   {
@@ -199,14 +216,4 @@ public class SearchQueryFilterTest extends BaseFilterTest
     expectedException.expectMessage("Received a non-applicable rewrite: {invalidName=dim1}, filter's dimension: dim0");
     filter.rewriteRequiredColumns(ImmutableMap.of("invalidName", "dim1"));
   }
-
-  @Test
-  public void test_equals()
-  {
-    EqualsVerifier.forClass(SearchQueryFilter.class)
-                  .usingGetClass()
-                  .withNonnullFields("dimension", "query")
-                  .withIgnoredFields("predicateFactory")
-                  .verify();
-  }
 }

processing/src/test/java/org/apache/druid/segment/filter/SpatialFilterTest.java

@@ -21,6 +21,7 @@ package org.apache.druid.segment.filter;
 
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Lists;
+import nl.jqno.equalsverifier.EqualsVerifier;
 import org.apache.druid.collections.spatial.search.RadiusBound;
 import org.apache.druid.collections.spatial.search.RectangularBound;
 import org.apache.druid.data.input.MapBasedInputRow;
@@ -55,6 +56,7 @@ import org.apache.druid.segment.TestHelper;
 import org.apache.druid.segment.incremental.IncrementalIndex;
 import org.apache.druid.segment.incremental.IncrementalIndexSchema;
 import org.apache.druid.segment.writeout.OffHeapMemorySegmentWriteOutMediumFactory;
+import org.apache.druid.testing.InitializedNullHandlingTest;
 import org.joda.time.Interval;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -72,7 +74,7 @@ import java.util.concurrent.ThreadLocalRandom;
 /**
  */
 @RunWith(Parameterized.class)
-public class SpatialFilterTest
+public class SpatialFilterTest extends InitializedNullHandlingTest
 {
   private static IndexMerger INDEX_MERGER = TestHelper.getTestIndexMergerV9(OffHeapMemorySegmentWriteOutMediumFactory.instance());
   private static IndexIO INDEX_IO = TestHelper.getTestIndexIO();
@@ -716,4 +718,16 @@ public class SpatialFilterTest
       throw new RuntimeException(e);
     }
   }
+
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(SpatialFilter.class).usingGetClass().verify();
+  }
+
+  @Test
+  public void testEqualsContractForBoundDruidPredicateFactory()
+  {
+    EqualsVerifier.forClass(SpatialFilter.BoundDruidPredicateFactory.class).usingGetClass().verify();
+  }
 }

processing/src/test/java/org/apache/druid/segment/filter/TrueFilterTest.java

@@ -0,0 +1,33 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.druid.segment.filter;
+
+import nl.jqno.equalsverifier.EqualsVerifier;
+import org.junit.Test;
+
+public class TrueFilterTest
+{
+  @Test
+  public void testEqualsContract()
+  {
+    EqualsVerifier.forClass(TrueFilter.class)
+                  .verify();
+  }
+}

processing/src/test/java/org/apache/druid/segment/incremental/IncrementalIndexStorageAdapterTest.java

@@ -713,6 +713,13 @@ public class IncrementalIndexStorageAdapterTest extends InitializedNullHandlingT
       return Collections.emptySet();
     }
 
+    @Override
+    public int hashCode()
+    {
+      // Test code, hashcode and equals isn't important
+      return super.hashCode();
+    }
+
     private class DictionaryRaceTestFilterDruidPredicateFactory implements DruidPredicateFactory
     {
       @Override

processing/src/test/java/org/apache/druid/segment/join/HashJoinSegmentStorageAdapterTest.java

@@ -23,6 +23,7 @@ import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
 import org.apache.druid.common.config.NullHandling;
 import org.apache.druid.java.util.common.DateTimes;
+import org.apache.druid.java.util.common.ISE;
 import org.apache.druid.java.util.common.Intervals;
 import org.apache.druid.java.util.common.StringUtils;
 import org.apache.druid.java.util.common.granularity.Granularities;
@@ -2137,7 +2138,6 @@ public class HashJoinSegmentStorageAdapterTest extends BaseHashJoinSegmentStorag
   {
     Filter originalFilter = new SelectorFilter("page", "this matches nothing");
     List<JoinableClause> joinableClauses = ImmutableList.of(factToCountryNameUsingIsoCodeLookup(JoinType.LEFT));
-
     JoinFilterPreAnalysis preAnalysis = JoinFilterAnalyzer.computeJoinFilterPreAnalysis(
         joinableClauses,
         VirtualColumns.EMPTY,
@@ -2170,4 +2170,40 @@ public class HashJoinSegmentStorageAdapterTest extends BaseHashJoinSegmentStorag
         ImmutableList.of()
     );
   }
+
+  @Test
+  public void test_makeCursors_originalFilterDoesNotMatchPreAnalysis_shouldThrowISE()
+  {
+    List<JoinableClause> joinableClauses = ImmutableList.of(factToCountryOnIsoCode(JoinType.LEFT));
+
+    JoinFilterPreAnalysis preAnalysis = JoinFilterAnalyzer.computeJoinFilterPreAnalysis(
+        joinableClauses,
+        VirtualColumns.EMPTY,
+        null,
+        true,
+        true,
+        true,
+        QueryContexts.DEFAULT_ENABLE_JOIN_FILTER_REWRITE_MAX_SIZE
+    );
+    Filter filter = new SelectorFilter("page", "this matches nothing");
+
+    try {
+      new HashJoinSegmentStorageAdapter(
+          factSegment.asStorageAdapter(),
+          joinableClauses,
+          preAnalysis
+      ).makeCursors(
+          filter,
+          Intervals.ETERNITY,
+          VirtualColumns.EMPTY,
+          Granularities.ALL,
+          false,
+          null
+      );
+      Assert.fail();
+    }
+    catch (ISE e) {
+      Assert.assertTrue(e.getMessage().startsWith("Filter provided to cursor ["));
+    }
+  }
 }

sql/src/test/java/org/apache/druid/sql/calcite/CalciteQueryTest.java

@@ -27,6 +27,7 @@ import org.apache.calcite.tools.ValidationException;
 import org.apache.druid.common.config.NullHandling;
 import org.apache.druid.java.util.common.DateTimes;
 import org.apache.druid.java.util.common.IAE;
+import org.apache.druid.java.util.common.ISE;
 import org.apache.druid.java.util.common.Intervals;
 import org.apache.druid.java.util.common.JodaUtils;
 import org.apache.druid.java.util.common.StringUtils;
@@ -10966,6 +10967,83 @@ public class CalciteQueryTest extends BaseCalciteQueryTest
     testQuery("SELECT TIME_EXTRACT(__time) FROM druid.foo", ImmutableList.of(), ImmutableList.of());
   }
 
+  @Test
+  public void testNestedGroupByOnInlineDataSourceWithFilterIsNotSupported() throws Exception
+  {
+    try {
+      testQuery(
+          "with abc as"
+          + "("
+          + "  SELECT dim1, m2 from druid.foo where \"__time\" >= '2001-01-02'"
+          + ")"
+          + ", def as"
+          + "("
+          + "  SELECT t1.dim1, SUM(t2.m2) as \"metricSum\" "
+          + "  from abc as t1 inner join abc as t2 on t1.dim1 = t2.dim1"
+          + "  where t1.dim1='def'"
+          + "  group by 1"
+          + ")"
+          + "SELECT count(*) from def",
+          ImmutableList.of(
+              GroupByQuery
+                  .builder()
+                  .setDataSource(
+                      GroupByQuery
+                          .builder()
+                          .setDataSource(
+                              join(
+                                  new QueryDataSource(
+                                      newScanQueryBuilder()
+                                          .dataSource(CalciteTests.DATASOURCE1)
+                                          .intervals(querySegmentSpec(Intervals.of("2001-01-02T00:00:00.000Z/146140482-04-24T15:36:27.903Z")))
+                                          .columns("dim1", "m2")
+                                          .resultFormat(ScanQuery.ResultFormat.RESULT_FORMAT_COMPACTED_LIST)
+                                          .context(QUERY_CONTEXT_DEFAULT)
+                                          .build()
+                                  ),
+                                  new QueryDataSource(
+                                      newScanQueryBuilder()
+                                          .dataSource(CalciteTests.DATASOURCE1)
+                                          .intervals(querySegmentSpec(Intervals.of("2001-01-02T00:00:00.000Z/146140482-04-24T15:36:27.903Z")))
+                                          .columns("dim1", "m2")
+                                          .resultFormat(ScanQuery.ResultFormat.RESULT_FORMAT_COMPACTED_LIST)
+                                          .context(QUERY_CONTEXT_DEFAULT)
+                                          .build()
+                                  ),
+                                  "j0",
+                                  equalsCondition(
+                                      DruidExpression.fromColumn("dim1"),
+                                      DruidExpression.fromColumn("j0.dim1")
+                                  ),
+                                  JoinType.INNER
+                              )
+                          )
+                          .setGranularity(Granularities.ALL)
+                          .setInterval(querySegmentSpec(Filtration.eternity()))
+                          .build()
+                  )
+                  .setGranularity(Granularities.ALL)
+                  .setInterval(querySegmentSpec(Filtration.eternity()))
+                  .build()
+          ),
+          ImmutableList.of(new Object[] {1})
+      );
+      Assert.fail("Expected an ISE to be thrown");
+    }
+    catch (RuntimeException e) {
+      Throwable cause = e.getCause();
+      boolean foundISE = false;
+      while (cause != null) {
+        if (cause instanceof ISE) {
+          foundISE = true;
+          break;
+        }
+        cause = cause.getCause();
+      }
+      Assert.assertTrue(foundISE);
+    }
+  }
+
   @Test
   public void testUsingSubqueryAsFilterOnTwoColumns() throws Exception
   {