fix(test): relieve JVM heap stress

  1. release thread when spring bean is destroyed
  2. reduce the bloom filter initial size for trans-cache when running test
  3. set enough memory in the project's gradle.properties

Author: halibobo1205

chainbase/src/main/java/org/tron/core/db2/core/SnapshotManager.java

@@ -24,6 +24,7 @@
 import java.util.concurrent.locks.LockSupport;
 import java.util.stream.Collectors;
 import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
 import lombok.Getter;
 import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
@@ -116,6 +117,17 @@ public void init() {
     exitThread.start();
   }
 
+  @PreDestroy
+  public void close() {
+    try {
+      exitThread.interrupt();
+      // help GC
+      exitThread = null;
+    } catch (Exception e) {
+      logger.warn("exitThread interrupt error", e);
+    }
+  }
+
   public static String simpleDecode(byte[] bytes) {
     byte[] lengthBytes = Arrays.copyOf(bytes, 4);
     int length = Ints.fromByteArray(lengthBytes);

consensus/src/main/java/org/tron/consensus/pbft/PbftMessageHandle.java

@@ -19,6 +19,7 @@
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
 import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
@@ -79,6 +80,17 @@ public void init() {
     start();
   }
 
+  @PreDestroy
+  public void close() {
+    try {
+      timer.cancel();
+      // help GC
+      timer = null;
+    } catch (Exception e) {
+      logger.warn("pbft-timer cancel error", e);
+    }
+  }
+
   public List<Miner> getSrMinerList() {
     return Param.getInstance().getMiners().stream()
         .filter(miner -> chainBaseManager.getWitnesses().contains(miner.getWitnessAddress()))

framework/src/main/java/org/tron/core/net/TronNetDelegate.java

@@ -10,6 +10,7 @@
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.locks.LockSupport;
 import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
 import lombok.Getter;
 import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
@@ -114,6 +115,17 @@ public void init() {
     hitThread.start();
   }
 
+  @PreDestroy
+  public void close() {
+    try {
+      hitThread.interrupt();
+      // help GC
+      hitThread = null;
+    } catch (Exception e) {
+      logger.warn("hitThread interrupt error", e);
+    }
+  }
+
   public Collection<PeerConnection> getActivePeer() {
     return TronNetService.getPeers();
   }

framework/src/test/resources/config-test.conf

@@ -63,6 +63,10 @@ storage {
 
   needToUpdateAsset = false
 
+  # the estimated number of block transactions (default 1000, min 100, max 10000).
+  # so the total number of cached transactions is 65536 * txCache.estimatedTransactions
+  txCache.estimatedTransactions = 50
+
 }
 
 node.discovery = {

gradle.properties

@@ -0,0 +1,2 @@
+org.gradle.parallel=true
+org.gradle.jvmargs=-Xms1g