Small corrections to dhtFlushControl()

- Test wCacheMaxChunk against maxURLinCache(), not getMaxWordCount(). This triggered a flush everytime dhtFlushControl() was called.
- If triggered, flush at least 1 entry.


git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4187 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/plasma/plasmaWordIndex.java

@@ -155,10 +155,11 @@ public final class plasmaWordIndex implements indexRI {
     public void dhtFlushControl(indexRAMRI theCache) {
         // check for forced flush
         synchronized (theCache) {
-            if ((theCache.getMaxWordCount() > wCacheMaxChunk ) ||
+            if ((theCache.maxURLinCache() > wCacheMaxChunk ) ||
                 (theCache.size() > theCache.getMaxWordCount()) ||
                 (serverMemory.available() < collections.minMem())) {
-                flushCache(theCache, theCache.size() + flushsize - theCache.getMaxWordCount());
+                int count = theCache.size() + flushsize - theCache.getMaxWordCount();
+                flushCache(theCache, (count > 0) ? count : 1);
             }
         }
     }