Customized Threads with generic name for easier monitoring.

source/net/yacy/crawler/RecrawlBusyThread.java

@@ -62,6 +62,7 @@ public class RecrawlBusyThread extends AbstractBusyThread {
 
     public RecrawlBusyThread(Switchboard xsb) {
         super(3000, 1000); // set lower limits of cycle delay
+        setName(THREAD_NAME);
         this.setIdleSleep(10*60000); // set actual cycle delays
         this.setBusySleep(2*60000);
         this.setPriority(Thread.MIN_PRIORITY);

source/net/yacy/document/importer/WarcImporter.java

@@ -70,6 +70,7 @@ public class WarcImporter extends Thread implements Importer {
     private boolean abort = false; // flag to signal stop of import
 
     public WarcImporter(InputStream f) {
+    	super("WarcImporter - from InputStream");
         source = f;
         recordCnt = 0;
         sourceSize = -1;
@@ -88,6 +89,7 @@ public class WarcImporter extends Thread implements Importer {
     }
 
     public WarcImporter(File f) throws FileNotFoundException{
+       super("WarcImporter - from file " + f.getName());
        name = f.getName();
        sourceSize = f.length();
        source = new FileInputStream(f);

source/net/yacy/search/Switchboard.java

@@ -4297,7 +4297,7 @@ public final class Switchboard extends serverSwitch {
         final int shutdownPort;
         if ((shutdownPort = this.getConfigInt(SwitchboardConstants.SERVER_SHUTDOWNPORT, 0)) > 0) {
             // init thread to listen to a shutdown port - to receive a shutdown signal
-            Thread shutdownThread = new Thread() {
+            Thread shutdownThread = new Thread("Switchboard.waitForShutdown") {
                 @Override
                 public void run() {
                     ServerSocket ss = null;