Removed maxDuplicatedBlocksWhenArchiving setting as it's no longer needed.

src/main/java/org/qortal/controller/repository/BlockArchiver.java

@@ -35,7 +35,7 @@ public class BlockArchiver implements Runnable {
 			while (!Controller.isStopping()) {
 				repository.discardChanges();
 
-				final int maximumArchiveHeight = BlockArchiveWriter.getMaxArchiveHeight(repository, true);
+				final int maximumArchiveHeight = BlockArchiveWriter.getMaxArchiveHeight(repository);
 
 				Thread.sleep(Settings.getInstance().getArchiveInterval());
 

src/main/java/org/qortal/repository/BlockArchiveWriter.java

@@ -42,34 +42,16 @@ public class BlockArchiveWriter {
         this.repository = repository;
     }
 
-    public static int getMaxArchiveHeight(Repository repository, boolean useMaximumDuplicatedLimit) throws DataException {
+    public static int getMaxArchiveHeight(Repository repository) throws DataException {
         // We must only archive trimmed blocks, or the archive will grow far too large
         final int accountSignaturesTrimStartHeight = repository.getBlockRepository().getOnlineAccountsSignaturesTrimHeight();
         final int atTrimStartHeight = repository.getATRepository().getAtTrimHeight();
         final int trimStartHeight = Math.min(accountSignaturesTrimStartHeight, atTrimStartHeight);
-
-        // In some cases we want to restrict the upper height of the archiver to save space
-        if (useMaximumDuplicatedLimit) {
-            // To save on disk space, it's best to not allow the archiver to get too far ahead of the pruner
-            // This reduces the amount of data that is held twice during the transition
-            final int blockPruneStartHeight = repository.getBlockRepository().getBlockPruneHeight();
-            final int atPruneStartHeight = repository.getATRepository().getAtPruneHeight();
-            final int pruneStartHeight = Math.min(blockPruneStartHeight, atPruneStartHeight);
-            final int maximumDuplicatedBlocks = Settings.getInstance().getMaxDuplicatedBlocksWhenArchiving();
-
-            // To summarize the above:
-            // - We must never archive anything greater than or equal to trimStartHeight
-            // - We should avoid archiving anything maximumDuplicatedBlocks higher than pruneStartHeight
-            return Math.min(trimStartHeight, pruneStartHeight + maximumDuplicatedBlocks);
-        }
-        else {
-            // We don't want to apply the maximum duplicated limit
-            return trimStartHeight;
-        }
+        return trimStartHeight - 1; // subtract 1 because these values represent the first _untrimmed_ block
     }
 
-    public static boolean isArchiverUpToDate(Repository repository, boolean useMaximumDuplicatedLimit) throws DataException {
-        final int maxArchiveHeight = BlockArchiveWriter.getMaxArchiveHeight(repository, useMaximumDuplicatedLimit);
+    public static boolean isArchiverUpToDate(Repository repository) throws DataException {
+        final int maxArchiveHeight = BlockArchiveWriter.getMaxArchiveHeight(repository);
         final int actualArchiveHeight = repository.getBlockArchiveRepository().getBlockArchiveHeight();
         final float progress = (float)actualArchiveHeight / (float) maxArchiveHeight;
         LOGGER.info(String.format("maxArchiveHeight: %d, actualArchiveHeight: %d, progress: %f",

src/main/java/org/qortal/repository/hsqldb/HSQLDBDatabaseArchiving.java

@@ -41,7 +41,7 @@ public class HSQLDBDatabaseArchiving {
 
             LOGGER.info("Building block archive - this process could take a while... (approx. 15 mins on high spec)");
 
-            final int maximumArchiveHeight = BlockArchiveWriter.getMaxArchiveHeight(repository, false);
+            final int maximumArchiveHeight = BlockArchiveWriter.getMaxArchiveHeight(repository);
             int startHeight = 0;
 
             while (!Controller.isStopping()) {

src/main/java/org/qortal/repository/hsqldb/HSQLDBDatabasePruning.java

@@ -52,7 +52,7 @@ public class HSQLDBDatabasePruning {
                 // Only proceed if we can see that the archiver has already finished
                 // This way, if the archiver failed for any reason, we can prune once it has had
                 // some opportunities to try again
-                boolean upToDate = BlockArchiveWriter.isArchiverUpToDate(repository, false);
+                boolean upToDate = BlockArchiveWriter.isArchiverUpToDate(repository);
                 if (!upToDate) {
                     return false;
                 }
@@ -253,7 +253,7 @@ public class HSQLDBDatabasePruning {
                 // Only proceed if we can see that the archiver has already finished
                 // This way, if the archiver failed for any reason, we can prune once it has had
                 // some opportunities to try again
-                boolean upToDate = BlockArchiveWriter.isArchiverUpToDate(repository, false);
+                boolean upToDate = BlockArchiveWriter.isArchiverUpToDate(repository);
                 if (!upToDate) {
                     return false;
                 }

src/main/java/org/qortal/settings/Settings.java

@@ -136,9 +136,6 @@ public class Settings {
 	private boolean archiveEnabled = true;
 	/** How often to attempt archiving (ms). */
 	private long archiveInterval = 7171L; // milliseconds
-	/** The maximum number of blocks that can exist in both the
-	 * database and the archive at the same time */
-	private int maxDuplicatedBlocksWhenArchiving = 100000;
 
 
 	// Peer-to-peer related
@@ -599,8 +596,4 @@ public class Settings {
 		return this.archiveInterval;
 	}
 
-	public int getMaxDuplicatedBlocksWhenArchiving() {
-		return this.maxDuplicatedBlocksWhenArchiving;
-	}
-
 }