cleanup local map

src/java/org/apache/cassandra/replication/TransferTrackingService.java

@@ -346,6 +346,7 @@ public class TransferTrackingService
                     pendingDir.deleteRecursive();
                 }
             }
+            local.remove(transfer.planId);
         }
         finally
         {

test/distributed/org/apache/cassandra/distributed/test/tracking/TrackedImportFailureTest.java

@@ -333,7 +333,7 @@ public class TrackedImportFailureTest extends TrackedTransferTestBase
             Uninterruptibles.sleepUninterruptibly(5, TimeUnit.SECONDS);
 
             // We exclude the missed instance because the SSTables streamed to the pending directory
-            // are not linked to LocalTransfers and hence cleanup does not know which SSTables to clean up
+            // are not linked to TransferTrackingService and hence cleanup does not know which SSTables to clean up
             assertPendingDirs(cluster.stream().filter(instance -> instance != missed).collect(Collectors.toList()), (File pendingUuidDir) -> {
                 Assertions.assertThat(pendingUuidDir.listUnchecked(File::isFile)).isEmpty();
             });