*) added possibility to "recycle" a DHTChunk that failed to transfer.

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2898 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/plasma/plasmaDHTChunk.java

@@ -81,6 +81,8 @@ public class plasmaDHTChunk {
     private long selectionStartTime = 0;
     private long selectionEndTime = 0;
     
+    private int transferFailedCounter = 0;
+    
     public indexContainer firstContainer() {
         return indexContainers[0];
     }
@@ -313,4 +315,12 @@ public class plasmaDHTChunk {
         if (this.selectionStartTime == 0 || this.selectionEndTime == 0) return -1;
         return this.selectionEndTime-this.selectionStartTime;
     }
+
+    public void incTransferFailedCounter() {
+        this.transferFailedCounter++;
+    }
+
+    public int getTransferFailedCounter() {
+        return transferFailedCounter;
+    }
 }

source/de/anomic/plasma/plasmaSwitchboard.java

@@ -2408,8 +2408,17 @@ public final class plasmaSwitchboard extends serverAbstractSwitch implements ser
             // show success
             return true;
         } else {
-            dhtTransferChunk.setStatus(plasmaDHTChunk.chunkStatus_FAILED);
-            log.logFine("DHT distribution: transfer FAILED");
+            dhtTransferChunk.incTransferFailedCounter();
+            int maxChunkFails = (int) getConfigLong("indexDistribution.maxChunkFails", 1);
+            if (dhtTransferChunk.getTransferFailedCounter() >= maxChunkFails) {
+                System.out.println("DEBUG: " + dhtTransferChunk.getTransferFailedCounter() + " of " + maxChunkFails + " sendings failed for this chunk, aborting!");
+                dhtTransferChunk.setStatus(plasmaDHTChunk.chunkStatus_FAILED);
+                log.logFine("DHT distribution: transfer FAILED");   
+            }
+            else {
+                System.out.println("DEBUG: " + dhtTransferChunk.getTransferFailedCounter() + " of " + maxChunkFails + " sendings failed for this chunk, retrying!");
+                log.logFine("DHT distribution: transfer FAILED, sending this chunk again");   
+            }
             return false;
         }
     }

yacy.init

@@ -702,6 +702,8 @@ indexDistribution.minChunkSize = 5
 indexDistribution.maxChunkSize = 1000
 indexDistribution.startChunkSize = 50
 
+indexDistribution.maxChunkFails = 1
+
 # defines if the peer should reject incoming index transfer
 # request if a given limit is reached
 indexDistribution.transferRWIReceiptLimitEnabled = true