[release-22.0] Fix: Improve VDiff internal query performance (vitessio#18579) (vitessio#18632)

Signed-off-by: Arthur Schreiber <[email protected]>
Co-authored-by: vitess-bot[bot] <108069721+vitess-bot[bot]@users.noreply.github.com>
Co-authored-by: Arthur Schreiber <[email protected]>

Author: 2 people

go/vt/sidecardb/schema/vdiff/vdiff_log.sql

@@ -16,9 +16,10 @@ limitations under the License.
 
 CREATE TABLE IF NOT EXISTS vdiff_log
 (
-    `id`         int(11)   NOT NULL AUTO_INCREMENT,
-    `vdiff_id`   int(11)   NOT NULL,
-    `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
-    `message`    text      NOT NULL,
-    PRIMARY KEY (`id`)
+    `id`         bigint(20) NOT NULL AUTO_INCREMENT,
+    `vdiff_id`   bigint(20) NOT NULL,
+    `created_at` timestamp  NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    `message`    text       NOT NULL,
+    PRIMARY KEY (`id`),
+    KEY `vdiff_id_idx` (`vdiff_id`)
 ) ENGINE = InnoDB CHARSET = utf8mb4

go/vt/sidecardb/schema/vdiff/vdiff_table.sql

@@ -16,7 +16,7 @@ limitations under the License.
 
 CREATE TABLE IF NOT EXISTS vdiff_table
 (
-    `vdiff_id`      varchar(64)    NOT NULL,
+    `vdiff_id`      bigint(20)     NOT NULL,
     `table_name`    varbinary(128) NOT NULL,
     `state`         varbinary(64)           DEFAULT NULL,
     `lastpk`        varbinary(2000)         DEFAULT NULL,