clear cache after closing

data-store/src/main/java/org/lucares/pdb/datastore/internal/PartitionDiskStore.java

@@ -13,7 +13,7 @@ import org.lucares.pdb.blockstorage.BSFile;
 import org.lucares.pdb.blockstorage.LongStreamFile;
 import org.lucares.pdb.diskstorage.DiskStorage;
 
-public class PartitionDiskStore {
+public class PartitionDiskStore implements AutoCloseable {
     private final ConcurrentHashMap<ParititionId, DiskStorage> diskStorages = new ConcurrentHashMap<>();
 
     private final Function<ParititionId, DiskStorage> creator;
@@ -61,6 +61,7 @@ public class PartitionDiskStore {
         }
     }
 
+    @Override
     public void close() {
         final List<Throwable> throwables = new ArrayList<>();
 
@@ -71,6 +72,7 @@ public class PartitionDiskStore {
                 throwables.add(e);
             }
         }
+        diskStorages.clear();
         if (!throwables.isEmpty()) {
             final RuntimeException ex = new RuntimeException();
             throwables.forEach(ex::addSuppressed);

data-store/src/main/java/org/lucares/pdb/datastore/internal/PartitionPersistentMap.java

@@ -150,6 +150,7 @@ public class PartitionPersistentMap<K, V, P> implements AutoCloseable {
                 throwables.add(e);
             }
         }
+        maps.clear();
         if (!throwables.isEmpty()) {
             final RuntimeException ex = new RuntimeException();
             throwables.forEach(ex::addSuppressed);