From 1ba32b1a418115a4cf006b63af4696152eab9968 Mon Sep 17 00:00:00 2001
From: Martin Edenhofer <me@edenhofer.de>
Date: Mon, 25 Sep 2017 23:47:37 +0200
Subject: [PATCH] Fixed issue #1405 - Scheduler not running because of Bad file
 descriptor in PGConsumeInput().

---
 app/models/scheduler.rb | 2 --
 script/scheduler.rb     | 6 ++++++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/app/models/scheduler.rb b/app/models/scheduler.rb
index 844fe5f84..0c5db3386 100644
--- a/app/models/scheduler.rb
+++ b/app/models/scheduler.rb
@@ -12,10 +12,8 @@ class Scheduler < ApplicationModel
     Thread.abort_on_exception = true
 
     # reconnect in case db connection is lost
-    # See issue #1080
     begin
       ActiveRecord::Base.connection.reconnect!
-    rescue PG::UnableToSend => e # rubocop:disable Lint/HandleExceptions
     rescue => e
       logger.error "Can't reconnect to database #{e.inspect}"
     end
diff --git a/script/scheduler.rb b/script/scheduler.rb
index 5be7db8c3..fdd2e8523 100755
--- a/script/scheduler.rb
+++ b/script/scheduler.rb
@@ -16,6 +16,12 @@ require 'daemons'
 
 def before_fork
 
+  # clear all connections before for, reconnect later ActiveRecord::Base.connection.reconnect!
+  # issue #1405 - Scheduler not running because of Bad file descriptor in PGConsumeInput()
+  # https://github.com/zammad/zammad/issues/1405
+  # see also https://bitbucket.org/ged/ruby-pg/issues/260/frequent-crashes-with-multithreading
+  ActiveRecord::Base.clear_all_connections!
+
   # remember open file handles
   @files_to_reopen = []
   ObjectSpace.each_object(File) do |file|