# HG changeset patch
# User drewp@bigasterisk.com
# Date 1685234293 25200
# Node ID a71e4272d808c1bac4e4fb8aab9a58cc81aca42e
# Parent  1780382477ed8e547439a602c4c969a2cbf1b013
cut way down on some no-op patches that were causing file rewrites/rereads

diff -r 1780382477ed -r a71e4272d808 rdfdb/service.py
--- a/rdfdb/service.py	Sat May 27 17:36:51 2023 -0700
+++ b/rdfdb/service.py	Sat May 27 17:38:13 2023 -0700
@@ -68,6 +68,12 @@
             return
         log.debug("%r sends patch to us: %s", self, data[:64])
         p = Patch(jsonRepr=data)
+
+        # this is very important- I caught clients piling up dozens of retries, causing
+        # us to rewrite files then notice them, etc. Problem may not be fully solved.
+        if p.isNoop():
+            return
+
         try:
             await self.db.patch(p, sender=self.connectionId)
         except ValueError as e: