Test with MariaDB 10.3

Fixes #471.

.travis.yml

@@ -22,6 +22,7 @@ env:
     - DB=mariadb DB_VERSION=10.0
     - DB=mariadb DB_VERSION=10.1
     - DB=mariadb DB_VERSION=10.2
+    - DB=mariadb DB_VERSION=10.3
 
 before_script: .travis/before_script.sh
 

.travis/before_script.sh

@@ -36,7 +36,7 @@ Pin: origin sfo1.mirrors.digitalocean.com
 Pin-Priority: 10000' | sudo tee /etc/apt/preferences.d/pin-mariadb.pref
     sudo apt-get update
     PACKAGES="mariadb-server mariadb-client"
-    if [[ $DB_VERSION != '10.2' ]]
+    if [[ $DB_VERSION < '10.2' ]]
     then
         PACKAGES="$PACKAGES libmariadbclient-dev"
     fi

HISTORY.rst

@@ -8,6 +8,12 @@ Pending
 
 .. Insert new release notes below this line
 
+* Started testing with MariaDB 10.3.
+
+* Changed ``GlobalStatus.wait_until_load_low()`` to increase the default number
+  of allowed running threads from 5 to 10, to account for the new default
+  threads in MariaDB 10.3.
+
 * Added ``encoder`` and ``decoder`` arguments to ``JSONField`` for customizing
   the way JSON is encoded and decoded from the database.
 

django_mysql/status.py

@@ -89,7 +89,7 @@ class GlobalStatus(BaseStatus):
 
     def wait_until_load_low(self, thresholds=None, timeout=60.0, sleep=0.1):
         if thresholds is None:
-            thresholds = {'Threads_running': 5}
+            thresholds = {'Threads_running': 10}
 
         start = time.time()
         names = thresholds.keys()

docs/installation.rst

@@ -9,7 +9,7 @@ Tested with all combinations of:
 
 * Python: 2.7, 3.6
 * Django: 1.8, 1.9, 1.10, 1.11, 2.0
-* MySQL: 5.6, 5.7 / MariaDB: 10.0, 10.1, 10.2
+* MySQL: 5.6, 5.7 / MariaDB: 10.0, 10.1, 10.2, 10.3
 * mysqlclient: 1.3 (Python 3 compatible version of ``MySQL-python``)
 
 Any combination of these should be good, and also ``MySQL-python`` should work

docs/status.rst

@@ -78,7 +78,7 @@ The following can all be imported from ``django_mysql.status``.
 
         Uses the same type-casting strategy as ``get()``.
 
-    .. method:: wait_until_load_low(thresholds={'Threads_running': 5}, \
+    .. method:: wait_until_load_low(thresholds={'Threads_running': 10}, \
                                     timeout=60.0, sleep=0.1)
 
         A helper method similar to the logic in ``pt-online-schema-change`` for
@@ -89,9 +89,9 @@ The following can all be imported from ``django_mysql.status``.
         :class:`django_mysql.exceptions.TimeoutError` if this does not occur
         within ``timeout`` seconds. Set ``timeout`` to 0 to never time out.
 
-        ``thresholds`` defaults to ``{'Threads_running': 5}``, which is the
+        ``thresholds`` defaults to ``{'Threads_running': 10}``, which is the
         default variable used in ``pt-online-schema-change``, but with a lower
-        threshold of 5 that is more suitable for small servers. You will very
+        threshold of 10 that is more suitable for small servers. You will very
         probably need to tweak it to your server.
 
         You can use this method during large background operations which you