Simple concurrent DML on RocksDB tables makes optimistic parallel replication abort

--source include/have_binlog_format_row.inc

--source include/master-slave.inc

CREATE TABLE t1 (pk INT AUTO_INCREMENT PRIMARY KEY, a INT, KEY(a)) ENGINE=RocksDB;

CREATE TABLE t2 (pk INT AUTO_INCREMENT PRIMARY KEY, b INT) ENGINE=RocksDB;

INSERT INTO t1 (pk) VALUES (NULL);

--connect (con1,localhost,root,,test)

INSERT INTO t1 (pk) VALUES (NULL);

--connection master1

BEGIN;

--connection con1

INSERT INTO t1 (pk) VALUES (NULL);

INSERT INTO t1 (pk) VALUES (NULL);

--connection master1

INSERT INTO t2 (pk) VALUES (NULL),(NULL);

--send

  UPDATE t1 SET a = 1;

--connection master

--send

  DELETE FROM t1;

--connection master1

--reap

COMMIT;

--connection master

--reap

--sync_slave_with_master

# Cleanup

--disconnect con1

--connection master

DROP TABLE t1, t2;

--source include/rpl_end.inc

2018-06-08  0:12:38 140524761007872 [Note] Slave SQL thread initialized, starting replication in log 

'master-bin.000001' at position 4, relay log './slave-relay-bin.000001' position: 4

2018-06-08  0:12:49 140524760401664 [ERROR] Slave worker thread retried transaction 10 time(s) in

 vain, giving up. Consider raising the value of the slave_transaction_retries variable.

2018-06-08  0:12:49 140524760401664 [ERROR] Slave SQL: Lock wait timeout exceeded; try 

restarting transaction, Gtid 0-1-7, Internal MariaDB error code: 1205

2018-06-08  0:12:49 140524760401664 [Warning] Slave: Lock wait timeout exceeded; try restarting 

transaction Error_code: 1205

2018-06-08  0:12:49 140524760401664 [ERROR] Error running query, slave SQL thread aborted. 

Fix the problem, and restart the slave SQL thread with "SLAVE START". We stopped at

 log 'master-bin.000001' position 1553

2018-06-08  0:12:49 140524761007872 [Note] Error reading relay log event: slave SQL thread was killed

2018-06-08  0:12:49 140524760704768 [ERROR] Slave (additional info): Commit failed due to failure

 of an earlier commit on which this one depends Error_code: 1964

2018-06-08  0:12:49 140524760704768 [Warning] Slave: Commit failed due to failure of an earlier 

commit on which this one depends Error_code: 1964

2018-06-08  0:12:49 140524760704768 [ERROR] Error running query, slave SQL thread aborted. 

Fix the problem, and restart the slave SQL thread with "SLAVE START". We stopped at log

 'master-bin.000001' position 1553

2018-06-08  0:12:49 140524761007872 [Note] Slave SQL thread exiting, replication stopped 

in log 'master-bin.000001' at position 1553