this is just a lucky guess... maybe we avoid those "Error while sending QUERY packet." errors on travis by splitting them into smaller alter tables. This is more or less the only difference to master branch where this problem does not occur

1 files changed, 5 insertions, 1 deletions

diff --git a/core/Columns/Updates.php b/core/Columns/Updates.php
index 152d5878ef..16233c78ff 100644
--- a/core/Columns/Updates.php
+++ b/core/Columns/Updates.php
@@ -42,7 +42,11 @@ class Updates extends \Piwik\Updates
         $changingColumns = self::getUpdates();
 
         foreach ($changingColumns as $table => $columns) {
-            $sqls["ALTER TABLE `" . Common::prefixTable($table) . "` " . implode(', ', $columns)] = false;
+            $chunks = array_chunk($columns, 3);
+
+            foreach ($chunks as $columnsToAlter) {
+                $sqls["ALTER TABLE `" . Common::prefixTable($table) . "` " . implode(', ', $columnsToAlter)] = false;
+            }
         }
 
         return $sqls;