diff --git a/rhodecode/lib/rc_cache/backends.py b/rhodecode/lib/rc_cache/backends.py
--- a/rhodecode/lib/rc_cache/backends.py
+++ b/rhodecode/lib/rc_cache/backends.py
@@ -38,9 +38,9 @@ from dogpile.cache.backends import redis
 from dogpile.cache.backends.file import FileLock
 from dogpile.cache.util import memoized_property
 
-from rhodecode.lib.memory_lru_dict import LRUDict, LRUDictDebug
-from rhodecode.lib.str_utils import safe_bytes, safe_str
-from rhodecode.lib.type_utils import str2bool
+from ...lib.memory_lru_dict import LRUDict, LRUDictDebug
+from ...lib.str_utils import safe_bytes, safe_str
+from ...lib.type_utils import str2bool
 
 _default_max_size = 1024
 
@@ -198,6 +198,13 @@ class FileNamespaceBackend(PickleSeriali
     def get_store(self):
         return self.filename
 
+    def cleanup_store(self):
+        for ext in ("db", "dat", "pag", "dir"):
+            final_filename = self.filename + os.extsep + ext
+            if os.path.exists(final_filename):
+                os.remove(final_filename)
+                log.warning('Removed dbm file %s', final_filename)
+
 
 class BaseRedisBackend(redis_backend.RedisBackend):
     key_prefix = ''
@@ -289,7 +296,7 @@ class RedisMsgPackBackend(MsgPackSeriali
 
 
 def get_mutex_lock(client, lock_key, lock_timeout, auto_renewal=False):
-    from rhodecode.lib._vendor import redis_lock
+    from ...lib._vendor import redis_lock
 
     class _RedisLockWrapper:
         """LockWrapper for redis_lock"""
diff --git a/rhodecode/lib/rc_cache/utils.py b/rhodecode/lib/rc_cache/utils.py
--- a/rhodecode/lib/rc_cache/utils.py
+++ b/rhodecode/lib/rc_cache/utils.py
@@ -26,9 +26,9 @@ import decorator
 from dogpile.cache import CacheRegion
 
 import rhodecode
-from rhodecode.lib.hash_utils import sha1
-from rhodecode.lib.str_utils import safe_bytes
-from rhodecode.lib.type_utils import str2bool # noqa :required by imports from .utils
+from ...lib.hash_utils import sha1
+from ...lib.str_utils import safe_bytes
+from ...lib.type_utils import str2bool # noqa :required by imports from .utils
 
 from . import region_meta