create table {$NAMESPACE}_worker.worker_task (
id int unsigned not null auto_increment primary key,
taskClass varchar(255) not null,
leaseOwner varchar(255),
leaseExpires int unsigned,
priority bigint unsigned not null,
failureCount int unsigned not null,
key(taskClass(128)),
key(leaseOwner(128)),
key(leaseExpires)
);
create table {$NAMESPACE}_worker.worker_taskdata (
id int unsigned not null auto_increment primary key,
taskID int unsigned not null,
data longblob not null,
unique key (taskID)
);