Improve Conflict Detection in Parallelization by Considering Slots to Reduce False Positives

CHANGELOG.md

@@ -21,6 +21,7 @@
 - Add TLS/mTLS options and configure the GraphQL HTTP service[#7910](https://github.com/hyperledger/besu/pull/7910)
 - Allow plugins to propose transactions during block creation [#8268](https://github.com/hyperledger/besu/pull/8268)
 - Update `eth_getLogs` to return a `Block not found` error when the requested block is not found. [#8290](https://github.com/hyperledger/besu/pull/8290)
+- Improve Conflict Detection in Parallelization by Considering Slots to Reduce False Positives. [#7923](https://github.com/hyperledger/besu/pull/7923)
 ### Bug fixes
 - Upgrade Netty to version 4.1.118 to fix CVE-2025-24970 [#8275](https://github.com/hyperledger/besu/pull/8275)
 - Add missing RPC method `debug_accountRange` to `RpcMethod.java` and implemented its handler. [#8153](https://github.com/hyperledger/besu/issues/8153)

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/MainnetBlockValidator.java

@@ -248,7 +248,7 @@ private void handleFailedBlockProcessing(
   protected BlockProcessingResult processBlock(
       final ProtocolContext context, final MutableWorldState worldState, final Block block) {
 
-    return blockProcessor.processBlock(context.getBlockchain(), worldState, block);
+    return blockProcessor.processBlock(context, context.getBlockchain(), worldState, block);
   }
 
   @Override

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/AbstractBlockProcessor.java

@@ -22,6 +22,7 @@
 import org.hyperledger.besu.datatypes.Wei;
 import org.hyperledger.besu.ethereum.BlockProcessingOutputs;
 import org.hyperledger.besu.ethereum.BlockProcessingResult;
+import org.hyperledger.besu.ethereum.ProtocolContext;
 import org.hyperledger.besu.ethereum.chain.Blockchain;
 import org.hyperledger.besu.ethereum.core.BlockHeader;
 import org.hyperledger.besu.ethereum.core.MutableWorldState;
@@ -95,6 +96,7 @@ protected AbstractBlockProcessor(
 
   @Override
   public BlockProcessingResult processBlock(
+      final ProtocolContext protocolContext,
       final Blockchain blockchain,
       final MutableWorldState worldState,
       final BlockHeader blockHeader,
@@ -103,6 +105,7 @@ public BlockProcessingResult processBlock(
       final Optional<List<Withdrawal>> maybeWithdrawals,
       final PrivateMetadataUpdater privateMetadataUpdater) {
     return processBlock(
+        protocolContext,
         blockchain,
         worldState,
         blockHeader,
@@ -114,6 +117,7 @@ public BlockProcessingResult processBlock(
   }
 
   protected BlockProcessingResult processBlock(
+      final ProtocolContext protocolContext,
       final Blockchain blockchain,
       final MutableWorldState worldState,
       final BlockHeader blockHeader,
@@ -151,7 +155,7 @@ protected BlockProcessingResult processBlock(
 
     final Optional<PreprocessingContext> preProcessingContext =
         preprocessingBlockFunction.run(
-            worldState,
+            protocolContext,
             privateMetadataUpdater,
             blockHeader,
             transactions,
@@ -342,7 +346,7 @@ public interface PreprocessingContext {}
 
   public interface PreprocessingFunction {
     Optional<PreprocessingContext> run(
-        final MutableWorldState worldState,
+        final ProtocolContext protocolContext,
         final PrivateMetadataUpdater privateMetadataUpdater,
         final BlockHeader blockHeader,
         final List<Transaction> transactions,
@@ -354,7 +358,7 @@ class NoPreprocessing implements PreprocessingFunction {
 
       @Override
       public Optional<PreprocessingContext> run(
-          final MutableWorldState worldState,
+          final ProtocolContext protocolContext,
           final PrivateMetadataUpdater privateMetadataUpdater,
           final BlockHeader blockHeader,
           final List<Transaction> transactions,

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/BlockProcessor.java

@@ -16,6 +16,7 @@
 
 import org.hyperledger.besu.datatypes.Wei;
 import org.hyperledger.besu.ethereum.BlockProcessingResult;
+import org.hyperledger.besu.ethereum.ProtocolContext;
 import org.hyperledger.besu.ethereum.chain.Blockchain;
 import org.hyperledger.besu.ethereum.core.Block;
 import org.hyperledger.besu.ethereum.core.BlockHeader;
@@ -68,14 +69,19 @@ default boolean isFailed() {
   /**
    * Processes the block.
    *
+   * @param protocolContext the current context of the protocol
    * @param blockchain the blockchain to append the block to
    * @param worldState the world state to apply changes to
    * @param block the block to process
    * @return the block processing result
    */
   default BlockProcessingResult processBlock(
-      final Blockchain blockchain, final MutableWorldState worldState, final Block block) {
+      final ProtocolContext protocolContext,
+      final Blockchain blockchain,
+      final MutableWorldState worldState,
+      final Block block) {
     return processBlock(
+        protocolContext,
         blockchain,
         worldState,
         block.getHeader(),
@@ -88,6 +94,7 @@ default BlockProcessingResult processBlock(
   /**
    * Processes the block.
    *
+   * @param protocolContext the current context of the protocol
    * @param blockchain the blockchain to append the block to
    * @param worldState the world state to apply changes to
    * @param blockHeader the block header for the block
@@ -96,18 +103,27 @@ default BlockProcessingResult processBlock(
    * @return the block processing result
    */
   default BlockProcessingResult processBlock(
+      final ProtocolContext protocolContext,
       final Blockchain blockchain,
       final MutableWorldState worldState,
       final BlockHeader blockHeader,
       final List<Transaction> transactions,
       final List<BlockHeader> ommers) {
     return processBlock(
-        blockchain, worldState, blockHeader, transactions, ommers, Optional.empty(), null);
+        protocolContext,
+        blockchain,
+        worldState,
+        blockHeader,
+        transactions,
+        ommers,
+        Optional.empty(),
+        null);
   }
 
   /**
    * Processes the block.
    *
+   * @param protocolContext the current context of the protocol
    * @param blockchain the blockchain to append the block to
    * @param worldState the world state to apply changes to
    * @param blockHeader the block header for the block
@@ -118,6 +134,7 @@ default BlockProcessingResult processBlock(
    * @return the block processing result
    */
   BlockProcessingResult processBlock(
+      ProtocolContext protocolContext,
       Blockchain blockchain,
       MutableWorldState worldState,
       BlockHeader blockHeader,
@@ -129,13 +146,15 @@ BlockProcessingResult processBlock(
   /**
    * Processes the block when running Besu in GoQuorum-compatible mode
    *
+   * @param protocolContext the current context of the protocol
    * @param blockchain the blockchain to append the block to
    * @param worldState the world state to apply public transactions to
    * @param privateWorldState the private world state to apply private transaction to
    * @param block the block to process
    * @return the block processing result
    */
   default BlockProcessingResult processBlock(
+      final ProtocolContext protocolContext,
       final Blockchain blockchain,
       final MutableWorldState worldState,
       final MutableWorldState privateWorldState,

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/MainnetProtocolSpecs.java

@@ -26,6 +26,7 @@
 import org.hyperledger.besu.datatypes.Wei;
 import org.hyperledger.besu.ethereum.BlockProcessingResult;
 import org.hyperledger.besu.ethereum.MainnetBlockValidator;
+import org.hyperledger.besu.ethereum.ProtocolContext;
 import org.hyperledger.besu.ethereum.chain.Blockchain;
 import org.hyperledger.besu.ethereum.core.BlockHeader;
 import org.hyperledger.besu.ethereum.core.MiningConfiguration;
@@ -1101,6 +1102,7 @@ private record DaoBlockProcessor(BlockProcessor wrapped) implements BlockProcess
 
     @Override
     public BlockProcessingResult processBlock(
+        final ProtocolContext protocolContext,
         final Blockchain blockchain,
         final MutableWorldState worldState,
         final BlockHeader blockHeader,
@@ -1110,6 +1112,7 @@ public BlockProcessingResult processBlock(
         final PrivateMetadataUpdater privateMetadataUpdater) {
       updateWorldStateForDao(worldState);
       return wrapped.processBlock(
+          protocolContext,
           blockchain,
           worldState,
           blockHeader,

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/PrivacyBlockProcessor.java

@@ -21,6 +21,7 @@
 import org.hyperledger.besu.enclave.EnclaveClientException;
 import org.hyperledger.besu.enclave.types.ReceiveResponse;
 import org.hyperledger.besu.ethereum.BlockProcessingResult;
+import org.hyperledger.besu.ethereum.ProtocolContext;
 import org.hyperledger.besu.ethereum.chain.Blockchain;
 import org.hyperledger.besu.ethereum.core.BlockHeader;
 import org.hyperledger.besu.ethereum.core.MutableWorldState;
@@ -83,6 +84,7 @@ public void setPublicWorldStateArchive(final WorldStateArchive publicWorldStateA
 
   @Override
   public BlockProcessingResult processBlock(
+      final ProtocolContext protocolContext,
       final Blockchain blockchain,
       final MutableWorldState worldState,
       final BlockHeader blockHeader,
@@ -102,6 +104,7 @@ public BlockProcessingResult processBlock(
 
     final BlockProcessingResult result =
         blockProcessor.processBlock(
+            protocolContext,
             blockchain,
             worldState,
             blockHeader,

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/parallelization/MainnetParallelBlockProcessor.java

@@ -17,6 +17,7 @@
 import org.hyperledger.besu.datatypes.Address;
 import org.hyperledger.besu.datatypes.Wei;
 import org.hyperledger.besu.ethereum.BlockProcessingResult;
+import org.hyperledger.besu.ethereum.ProtocolContext;
 import org.hyperledger.besu.ethereum.chain.Blockchain;
 import org.hyperledger.besu.ethereum.core.BlockHeader;
 import org.hyperledger.besu.ethereum.core.MutableWorldState;
@@ -31,7 +32,7 @@
 import org.hyperledger.besu.ethereum.mainnet.ProtocolSpecBuilder;
 import org.hyperledger.besu.ethereum.privacy.storage.PrivateMetadataUpdater;
 import org.hyperledger.besu.ethereum.processing.TransactionProcessingResult;
-import org.hyperledger.besu.ethereum.trie.diffbased.common.worldview.DiffBasedWorldState;
+import org.hyperledger.besu.ethereum.trie.diffbased.common.provider.DiffBasedWorldStateProvider;
 import org.hyperledger.besu.evm.blockhash.BlockHashLookup;
 import org.hyperledger.besu.evm.worldstate.WorldUpdater;
 import org.hyperledger.besu.metrics.BesuMetricCategory;
@@ -137,6 +138,7 @@ protected TransactionProcessingResult getTransactionProcessingResult(
 
   @Override
   public BlockProcessingResult processBlock(
+      final ProtocolContext protocolContext,
       final Blockchain blockchain,
       final MutableWorldState worldState,
       final BlockHeader blockHeader,
@@ -146,6 +148,7 @@ public BlockProcessingResult processBlock(
       final PrivateMetadataUpdater privateMetadataUpdater) {
     final BlockProcessingResult blockProcessingResult =
         super.processBlock(
+            protocolContext,
             blockchain,
             worldState,
             blockHeader,
@@ -154,13 +157,15 @@ public BlockProcessingResult processBlock(
             maybeWithdrawals,
             privateMetadataUpdater,
             new ParallelTransactionPreprocessing());
+
     if (blockProcessingResult.isFailed()) {
       // Fallback to non-parallel processing if there is a block processing exception .
       LOG.info(
           "Parallel transaction processing failure. Falling back to non-parallel processing for block #{} ({})",
           blockHeader.getNumber(),
           blockHeader.getBlockHash());
       return super.processBlock(
+          protocolContext,
           blockchain,
           worldState,
           blockHeader,
@@ -209,20 +214,20 @@ class ParallelTransactionPreprocessing implements PreprocessingFunction {
 
     @Override
     public Optional<PreprocessingContext> run(
-        final MutableWorldState worldState,
+        final ProtocolContext protocolContext,
         final PrivateMetadataUpdater privateMetadataUpdater,
         final BlockHeader blockHeader,
         final List<Transaction> transactions,
         final Address miningBeneficiary,
         final BlockHashLookup blockHashLookup,
         final Wei blobGasPrice) {
-      if ((worldState instanceof DiffBasedWorldState)) {
+      if ((protocolContext.getWorldStateArchive() instanceof DiffBasedWorldStateProvider)) {
         ParallelizedConcurrentTransactionProcessor parallelizedConcurrentTransactionProcessor =
             new ParallelizedConcurrentTransactionProcessor(transactionProcessor);
-        // When enabled, runAsyncBlock performs non-conflicting parallel execution of transactions
-        // in the background using an optimistic approach.
+        // runAsyncBlock, if activated, facilitates the  non-blocking parallel execution of
+        // transactions in the background through an optimistic strategy.
         parallelizedConcurrentTransactionProcessor.runAsyncBlock(
-            worldState,
+            protocolContext,
             blockHeader,
             transactions,
             miningBeneficiary,