Give MySQL server up to 1 hour to recover.

ExtensionCrawler/config.py

@@ -167,8 +167,8 @@ def const_mysql_config_file():
 
 
 def const_mysql_maxtries():
-    return 3
+    return 12
 
 
 def const_mysql_try_wait():
-    return 1
+    return 300

ExtensionCrawler/dbbackend/mysql_backend.py

@@ -126,9 +126,10 @@ class MysqlBackend:
                     raise last_exception
                 else:
                     factor = 0.2
-                    logmsg = ("Exception on mysql connection attempt "
+                    logmsg = ("Exception ({}) on mysql connection attempt "
                               "{} of {}, wating {}s +/- {}% before retrying..."
-                              ).format(t + 1,
+                              ).format(str(e),
+                                       t + 1,
                                        self.maxtries,
                                        self.try_wait, factor * 100)
                     log_warning(logmsg, 3)

create-db

@@ -68,8 +68,6 @@ def process_id(from_date, until_date, delayed, path):
             try:
                 with MysqlBackend(
                         extid,
-                        try_wait=10,
-                        maxtries=30,
                         delayed=delayed,
                         cache_etags=True,
                         read_default_file=const_mysql_config_file(),