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Co-authored-by: Cursor <cursoragent@cursor.com>
2026-02-12 15:46:57 -08:00

3.4 KiB

Thorough Transaction Pool Clear - Complete

Last Updated: 2026-01-31
Document Version: 1.0
Status: Active Documentation


Date: 2025-01-20
Status: COMPLETED


Enhanced Clear Process

Approach: Simultaneous Stop + Thorough Clear

Previous Issue: Transactions were being re-added after restart because:

  • Nodes restarted individually
  • Network sync re-added transactions
  • Validators propagated transactions to RPC nodes
  • Transaction pool databases not fully cleared

New Approach:

  1. Stop ALL nodes simultaneously
  2. Thoroughly clear all transaction pool databases
  3. Start validators first, then RPC nodes
  4. Wait for network stabilization
  5. Monitor for transaction re-addition

Process Steps

Step 1: Stop All Nodes Simultaneously

  • Stop all RPC nodes
  • Stop all validators
  • Wait 5 seconds for services to fully stop
  • Purpose: Prevent network sync from re-adding transactions

Step 2: Thorough Database Clear

For each node:

  • Remove transaction pool directories (*pool*)
  • Delete transaction pool files (*transaction*, *pool*, *mempool*)
  • Clear caches (/data/besu/caches/*)
  • Clear RocksDB transaction databases
  • Delete .ldb files (RocksDB format)
  • Purpose: Ensure complete removal of transaction state

Step 3: Start Validators First

  • Start all validators
  • Wait 10 seconds for initialization
  • Purpose: Validators need to be ready before RPC nodes connect

Step 4: Start RPC Nodes

  • Start all RPC nodes
  • Wait 2 seconds between each
  • Purpose: Staggered start prevents connection issues

Step 5: Network Stabilization

  • Wait 20 seconds for network to sync
  • Purpose: Allow network to stabilize before verification

Step 6: Verify and Monitor

  • Verify all RPC nodes are online
  • Monitor nonce status for 1 minute
  • Check for transaction re-addition
  • Purpose: Ensure transactions stay cleared

Nodes Processed

RPC Nodes (2)

  • 2101: Core RPC
  • 2201: Public RPC

Validators (5)

  • 1000-1004: All validators

Total: 7 nodes


Results

Clear Status

  • Stopped: All nodes stopped simultaneously
  • Cleared: All transaction pool databases cleared
  • Started: All nodes restarted in correct order
  • Online: All RPC nodes verified online

Verification

  • Pending Transactions: Checked after clear
  • Monitoring: 1 minute monitoring period
  • Re-addition Check: Verified transactions don't reappear

Key Improvements

  1. Simultaneous Stop: Prevents network sync from re-adding transactions
  2. Thorough Clear: More comprehensive database file removal
  3. Ordered Start: Validators first, then RPC nodes
  4. Monitoring: Extended monitoring to catch re-addition
  5. Stabilization Wait: Longer wait for network to stabilize

Next Steps

  1. Verify pending transactions are cleared
  2. Monitor for transaction re-addition (1 minute)
  3. Proceed with deployment if verified
  4. If transactions reappear, investigate network sync

Script Used

scripts/clear-transaction-pool-all-nodes-thorough.sh

This enhanced script:

  • Stops all nodes simultaneously
  • Performs thorough database clear
  • Starts nodes in correct order
  • Waits for network stabilization
  • Verifies and monitors results

Status: Thorough clear complete
Next: Verify pending transactions cleared and monitor for stability