fix https://github.com/lbryio/lbry/issues/1297

lbrynet/conf.py

@@ -485,7 +485,8 @@ class Config(CLIConfig):
         previous_names=['announce_head_blobs_only']
     )
     concurrent_blob_announcers = Integer(
-        "Number of blobs to iteratively announce at once", 10, previous_names=['concurrent_announcers']
+        "Number of blobs to iteratively announce at once, set to 0 to disable", 10,
+        previous_names=['concurrent_announcers']
     )
     max_connections_per_download = Integer(
         "Maximum number of peers to connect to while downloading a blob", 5,

lbrynet/dht/blob_announcer.py

@@ -19,6 +19,8 @@ class BlobAnnouncer:
         self.announce_queue: typing.List[str] = []
 
     async def _announce(self, batch_size: typing.Optional[int] = 10):
+        if not batch_size:
+            return
         if not self.node.joined.is_set():
             await self.node.joined.wait()
         blob_hashes = await self.storage.get_blobs_to_announce()