remove trxs pending size limit

Author: olenheim

src/main/java/org/tron/core/config/Parameter.java

@@ -45,7 +45,7 @@ interface NetConstants {
     long HEAD_NUM_MAX_DELTA = 1000L;
     long HEAD_NUM_CHECK_TIME = 60000L;
     int MAX_INVENTORY_SIZE_IN_MINUTES = 2;
-    long NET_MAX_TRX_PER_SECOND = 1000L;
+    long NET_MAX_TRX_PER_SECOND = 700L;
     long MAX_TRX_PER_PEER = 200L;
     int NET_MAX_INV_SIZE_IN_MINUTES = 2;
     int MSG_CACHE_DURATION_IN_BLOCKS = 5;

src/main/java/org/tron/core/db/Manager.java

@@ -934,7 +934,7 @@ public synchronized BlockCapsule generateBlock(
       TransactionCapsule trx = (TransactionCapsule) iterator.next();
       if (DateTime.now().getMillis() - when
           > ChainConstant.BLOCK_PRODUCED_INTERVAL * 0.5 * ChainConstant.BLOCK_PRODUCED_TIME_OUT) {
-        logger.debug("Processing transaction time exceeds the 50% producing time。");
+        logger.warn("Processing transaction time exceeds the 50% producing time。");
         break;
       }
       // check the block size

src/main/java/org/tron/core/net/node/NodeDelegateImpl.java

@@ -2,7 +2,6 @@
 
 import static org.tron.core.config.Parameter.ChainConstant.BLOCK_PRODUCED_INTERVAL;
 import static org.tron.core.config.Parameter.ChainConstant.BLOCK_SIZE;
-import static org.tron.core.config.Parameter.NodeConstant.MAX_TRANSACTION_PENDING;
 
 import com.google.common.primitives.Longs;
 import java.util.ArrayList;
@@ -104,10 +103,6 @@ public synchronized LinkedList<Sha256Hash> handleBlock(BlockCapsule block, boole
   @Override
   public void handleTransaction(TransactionCapsule trx) throws BadTransactionException {
     logger.info("handle transaction");
-    if (dbManager.getPendingTransactions().size() > MAX_TRANSACTION_PENDING * 2) {
-      logger.warn("The pending txs list is full");
-      return;
-    }
 
     if (dbManager.getTransactionIdCache().getIfPresent(trx.getTransactionId()) != null) {
       logger.warn("This transaction has been processed");