Drop activity_time index

To avoid other queries prefering this index and being painfully slow.

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

appinfo/info.xml

@@ -14,7 +14,7 @@
 		More information is available in the Activity documentation.
 	</description>
 
-	<version>2.10.0</version>
+	<version>2.10.1</version>
 	<licence>agpl</licence>
 	<author>Frank Karlitschek</author>
 	<author>Joas Schilling</author>

lib/Migration/Version2010Date20190416112817.php

@@ -0,0 +1,35 @@
+<?php
+declare(strict_types=1);
+
+namespace OCA\Activity\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\SimpleMigrationStep;
+use OCP\Migration\IOutput;
+
+/**
+ * Auto-generated migration step: Please modify to your needs!
+ */
+class Version2010Date20190416112817 extends SimpleMigrationStep {
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @return null|ISchemaWrapper
+	 */
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options) {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		$table = $schema->getTable('activity');
+
+		if ($table->hasIndex('activity_time')) {
+			$table->dropIndex('activity_time');
+		}
+
+		return $schema;
+	}
+
+}