Enable new KeyValueCursorBaseContinuation serialization

fdb-record-layer-core/src/main/java/com/apple/foundationdb/record/provider/foundationdb/KeyValueCursorBase.java

@@ -281,7 +281,7 @@ public abstract static class Builder<T extends Builder<T>> {
 
         protected Builder(@Nonnull Subspace subspace) {
             this.subspace = subspace;
-            this.serializationMode = SerializationMode.TO_OLD;
+            this.serializationMode = SerializationMode.TO_NEW;
         }
 
         /**

fdb-record-layer-core/src/main/java/com/apple/foundationdb/record/query/plan/plans/RecordQueryIndexPlan.java

@@ -219,7 +219,7 @@ public RecordQueryIndexPlan(@Nonnull final String indexName,
                                 @Nonnull final Optional<? extends MatchCandidate> matchCandidateOptional,
                                 @Nonnull final Type resultType,
                                 @Nonnull final QueryPlanConstraint constraint) {
-        this(indexName, commonPrimaryKey, scanParameters, indexFetchMethod, fetchIndexRecords, reverse, strictlySorted, matchCandidateOptional, resultType, constraint, KeyValueCursorBase.SerializationMode.TO_OLD);
+        this(indexName, commonPrimaryKey, scanParameters, indexFetchMethod, fetchIndexRecords, reverse, strictlySorted, matchCandidateOptional, resultType, constraint, KeyValueCursorBase.SerializationMode.TO_NEW);
     }
 
     @VisibleForTesting
@@ -834,7 +834,7 @@ public byte[] toBytes() {
                 if (bytes == null) {
                     synchronized (this) {
                         if (bytes == null) {
-                            bytes = KeyValueCursorBase.Continuation.getInnerContinuation(new KeyValueCursorBase.Continuation(KeyValueCursorBase.Continuation.getInnerContinuation(baseContinuation.toBytes()), prefixLength, serializationMode).toBytes());
+                            bytes = new KeyValueCursorBase.Continuation(KeyValueCursorBase.Continuation.getInnerContinuation(baseContinuation.toBytes()), prefixLength, serializationMode).toBytes();
                         }
                     }
                 }

fdb-relational-core/src/test/java/com/apple/foundationdb/relational/recordlayer/query/ExplainTests.java

@@ -135,7 +135,7 @@ void explainWithContinuationSerializedPlanTest() throws Exception {
                         final var continuationInfo = resultSet.getStruct(5);
                         org.junit.jupiter.api.Assertions.assertNotNull(continuationInfo);
                         final var assertStruct = RelationalStructAssert.assertThat(continuationInfo);
-                        assertStruct.hasValue("EXECUTION_STATE", new byte[]{0, 21, 1, 21, 11});
+                        assertStruct.hasValue("EXECUTION_STATE", new byte[]{10, 5, 0, 21, 1, 21, 11, 17, -84, -51, 115, -104, -35, 66, 0, 94});
                         assertStruct.hasValue("VERSION", 1);
                         assertStruct.hasValue("PLAN_HASH_MODE", "VC0");
                         assertStruct.hasValue("PLAN_HASH", -1635569052);
@@ -167,7 +167,7 @@ void explainWithContinuationSerializedPlanWithDifferentQueryTest() throws Except
                         final var continuationInfo = resultSet.getStruct(5);
                         org.junit.jupiter.api.Assertions.assertNotNull(continuationInfo);
                         final var assertStruct = RelationalStructAssert.assertThat(continuationInfo);
-                        assertStruct.hasValue("EXECUTION_STATE", new byte[]{0, 21, 1, 21, 11});
+                        assertStruct.hasValue("EXECUTION_STATE", new byte[]{10, 5, 0, 21, 1, 21, 11, 17, -84, -51, 115, -104, -35, 66, 0, 94});
                         assertStruct.hasValue("VERSION", 1);
                         assertStruct.hasValue("PLAN_HASH_MODE", "VC0");
                         assertStruct.hasValue("PLAN_HASH", -1635569052);
@@ -199,7 +199,7 @@ void explainExecuteStatementTest() throws Exception {
                         final var continuationInfo = resultSet.getStruct(5);
                         org.junit.jupiter.api.Assertions.assertNotNull(continuationInfo);
                         final var assertStruct = RelationalStructAssert.assertThat(continuationInfo);
-                        assertStruct.hasValue("EXECUTION_STATE", new byte[]{0, 21, 1, 21, 11});
+                        assertStruct.hasValue("EXECUTION_STATE", new byte[]{10, 5, 0, 21, 1, 21, 11, 17, -84, -51, 115, -104, -35, 66, 0, 94});
                         assertStruct.hasValue("VERSION", 1);
                         assertStruct.hasValue("PLAN_HASH_MODE", "VC0");
                         assertStruct.hasValue("PLAN_HASH", -1635569052);

fdb-relational-core/src/test/java/com/apple/foundationdb/relational/recordlayer/query/ForceContinuationQueryTests.java

@@ -21,7 +21,6 @@
 package com.apple.foundationdb.relational.recordlayer.query;
 
 import com.apple.foundationdb.relational.api.Continuation;
-import com.apple.foundationdb.relational.api.exceptions.ContextualSQLException;
 import com.apple.foundationdb.relational.recordlayer.EmbeddedRelationalExtension;
 import com.apple.foundationdb.relational.recordlayer.RelationalConnectionRule;
 import com.apple.foundationdb.relational.recordlayer.RelationalStatementRule;
@@ -31,7 +30,6 @@
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Order;
 import org.junit.jupiter.api.extension.RegisterExtension;
 import org.junit.jupiter.params.ParameterizedTest;
@@ -94,26 +92,7 @@ void setup() throws Exception {
         statement.execute("delete from t3");
     }
 
-    @ParameterizedTest
-    @MethodSource("failedQueries")
-    void testOldSerializationFails(String sql, long result) throws Exception {
-        Continuation continuation;
-        statement.setMaxRows(1);
-        try (var resultSet = statement.executeQuery(sql)) {
-            Assertions.assertTrue(resultSet.next());
-            Assertions.assertEquals(result, resultSet.getLong(1));
-            continuation = resultSet.getContinuation();
-        }
-        // old kvCursorContinuation cause continuation at beginning exception
-        try (final var preparedStatement = connection.prepareStatement("EXECUTE CONTINUATION ?param")) {
-            preparedStatement.setMaxRows(1);
-            preparedStatement.setBytes("param", continuation.serialize());
-            Assertions.assertThrows(ContextualSQLException.class, preparedStatement::executeQuery);
-        }
-    }
-
     // disabled until SerializationMode = TO_NEW
-    @Disabled
     @ParameterizedTest
     @MethodSource("failedQueries")
     void testNewSerialization(String sql, long result) throws Exception {

yaml-tests/src/test/resources/aggregate-index-tests-count.yamsql

@@ -50,6 +50,15 @@ test_block:
       # Cannot run with FORCE_CONTINUATIONS due to: https://github.com/FoundationDB/fdb-record-layer/issues/3206
       - maxRows: 0
       - result: [{4}]
+    -
+      - query: select count(*) from t1
+      - explain: "AISCAN(MV1 <,> BY_GROUP -> [_0: VALUE:[0]]) | MAP (_ AS _0) | ON EMPTY NULL | MAP (coalesce_long(_._0._0, promote(0l AS LONG)) AS _0)"
+      # https://github.com/FoundationDB/fdb-record-layer/issues/3206 is fixed since !current_version
+      - maxRows: 1
+      - initialVersionAtLeast: !current_version
+      - result: [{4}]
+      - result: []
+      - initialVersionLessThan: !current_version
     -
       - query: select count(*) from t1 group by col2
       - explain: "AISCAN(MV2 <,> BY_GROUP -> [_0: KEY:[0], _1: VALUE:[0]]) | MAP (_._1 AS _0)"
@@ -60,6 +69,15 @@ test_block:
       # Cannot run with FORCE_CONTINUATIONS due to: https://github.com/FoundationDB/fdb-record-layer/issues/3206
       - maxRows: 0
       - result: [{2}]
+    -
+      - query: select count(col1) from t1
+      - explain: "AISCAN(MV3 <,> BY_GROUP -> [_0: VALUE:[0]]) | MAP (_ AS _0) | ON EMPTY NULL | MAP (coalesce_long(_._0._0, promote(0l AS LONG)) AS _0)"
+      # https://github.com/FoundationDB/fdb-record-layer/issues/3206 is fixed since !current_version
+      - maxRows: 1
+      - initialVersionAtLeast: !current_version
+      - result: [{2}]
+      - result: []
+      - initialVersionLessThan: !current_version
     -
       - query: select count(col1) from t1 group by col2
       - explain: "AISCAN(MV4 <,> BY_GROUP -> [_0: KEY:[0], _1: VALUE:[0]]) | MAP (_._1 AS _0)"