From 5978dccff09e647509bb92e8125aa02e87f7a0a2 Mon Sep 17 00:00:00 2001 From: Richard van der Hoff Date: Wed, 14 Feb 2018 15:54:09 +0000 Subject: [PATCH] remove overzealous exception handling --- synapse/storage/search.py | 28 ++++++++++------------------ 1 file changed, 10 insertions(+), 18 deletions(-) diff --git a/synapse/storage/search.py b/synapse/storage/search.py index 8d294d497..2755acff4 100644 --- a/synapse/storage/search.py +++ b/synapse/storage/search.py @@ -16,7 +16,6 @@ from collections import namedtuple import logging import re -import sys import ujson as json from twisted.internet import defer @@ -335,25 +334,18 @@ class SearchStore(BackgroundUpdateStore): # (postgres 9.5 uses the separate gin_pending_list_limit setting, # so doesn't suffer the same problem, but changing work_mem will # be harmless) + # + # Note that we don't need to worry about restoring it on + # exception, because exceptions will cause the transaction to be + # rolled back, including the effects of the SET command. + # + # Also: we use SET rather than SET LOCAL because there's lots of + # other stuff going on in this transaction, which want to have the + # normal work_mem setting. txn.execute("SET work_mem='256kB'") - try: - txn.executemany(sql, args) - except Exception: - # we need to reset work_mem, but doing so may throw a new - # exception and we want to preserve the original - t, v, tb = sys.exc_info() - try: - txn.execute("RESET work_mem") - except Exception as e: - logger.warn( - "exception resetting work_mem during exception " - "handling: %r", - e, - ) - raise t, v, tb - else: - txn.execute("RESET work_mem") + txn.executemany(sql, args) + txn.execute("RESET work_mem") elif isinstance(self.database_engine, Sqlite3Engine): sql = (