Lock wait timeout exceeded with one query running - mysql

Question

I run the following query and it is the only query running on my large (2 vCPU, 7.5 GB RAM, 100GB SSD) RDS hosted database.
DELETE
FROM books
WHERE book_type = '/type/edition'
AND json LIKE '%"languages":%'
AND json NOT LIKE '%/eng%';
But I get the following error.
Error Code: 1205. Lock wait timeout exceeded; try restarting transaction
I increased the timeout to 1200 seconds using SET innodb_lock_wait_timeout = 1200;.
However, I get that same error. There are no other queries running on the database, it's newly created and not in production. Here is the result of show processlist:
+---+----------+----------------------------------------------------------+-------------+-------+-----+----------+------------------------------------------------------------------------------------------------------+
| 1 | rdsadmin | localhost:37959 | | Sleep | 10 | | |
+---+----------+----------------------------------------------------------+-------------+-------+-----+----------+------------------------------------------------------------------------------------------------------+
| 5 | website | host109-156-119-150.range109-156.btcentralplus.com:57923 | openlibrary | Sleep | 606 | | |
| 6 | website | host109-156-119-150.range109-156.btcentralplus.com:57924 | openlibrary | Query | 599 | updating | DELETE FROM books WHERE book_type = '/type/edition' AND json LIKE '%"languages":%' AND json NOT LIKE |
| 8 | website | host109-156-119-150.range109-156.btcentralplus.com:58021 | openlibrary | Sleep | 145 | | |
| 9 | website | host109-156-119-150.range109-156.btcentralplus.com:58022 | openlibrary | Query | 0 | init | show processlist |
+---+----------+----------------------------------------------------------+-------------+-------+-----+----------+------------------------------------------------------------------------------------------------------+
Here is the schema for this table.
CREATE TABLE `books` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`book_type` varchar(50) DEFAULT NULL,
`book_key` varchar(50) DEFAULT NULL,
`revision` tinyint(4) DEFAULT NULL,
`last_modified` varchar(50) DEFAULT NULL,
`json` text,
`date` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
PRIMARY KEY (`id`),
KEY `book_type` (`book_type`),
KEY `book_key` (`book_key`),
KEY `revision` (`revision`)
) ENGINE=InnoDB AUTO_INCREMENT=97545025 DEFAULT CHARSET=utf8;
Please note, this table has about 100 million rows and contains 51GB of data.
Why am I getting a lock wait timeout? I thought this error could occur only when you are running multiple queries.

Answer 1

Well as you have tried most ways, maybe you could try :
create index book_type and json ? Maybe this can help some.
Otherwise try to split the delete operation,
e.g.
DELETE
FROM books
WHERE
ID between 1 and 1000000
AND book_type = '/type/edition'
AND json LIKE '%"languages":%'
AND json NOT LIKE '%/eng%';
and then run again where ID between 1000001 and 2000000
etc.

Answer 2

I have do same thing. see it very simple way
DELETE FROM `database`.`table` WHERE ((action="limit") AND (info='login') AND (creation < DATE_SUB(NOW(), INTERVAL 10 MINUTE)))
also face error then follow:
You can set it to higher value in /etc/my.cnf permanently with this line
[mysqld]
innodb_lock_wait_timeout=120
and restart mysql. If you cannot restart mysql at this time, run this:
SET GLOBAL innodb_lock_wait_timeout = 120;
You could also just set it for the duration of your session
SET innodb_lock_wait_timeout = 120;