Multi-Threading issue using Spring JPA entity
I am new using concurrent programming techniques and wondering if the following flow can cause problems if executed in multiple-threads.
Please consider the following entity:
@Getter
@Setter
@Table(name = "CAR")
@Entity
public class Car {
@Id
private BigInteger id;
@Column(name = "model")
private String model;
}
And the repository is:
@Service
public interface CarRepository extends JpaRepository<Car, BigInteger>{
}
I just wannt to know if two threads are at the same time in sync method, is there any chance of getting DuplicateKeyException? or any exception in below sync method due to multi-threading?
@Transactional
public void sync(final BigInteger id) {
Car car = new Car(id, ....);
Car someOtherCar = new Car(....);
carRepository.save(car);
carRepository.save(someOtherCar);
carRepository.flush();
}
I tried the below code for testing purpose to insert the same car specs twice in a single thread and it works with no issues.
@Transactional
public void sync(final BigInteger id) {
Car car = new Car(id, ....);
Car sameCar = new Car(id, ....);
carRepository.save(car);
carRepository.save(sameCar);
carRepository.flush();
}
Please let me know your thoughts on this. Thanks
java multithreading hibernate jpa spring-data-jpa
asked Nov 25 '18 at 17:45
FarhanNayyerFarhanNayyer
33
add a comment |
I am new using concurrent programming techniques and wondering if the following flow can cause problems if executed in multiple-threads.
Please consider the following entity:
@Getter
@Setter
@Table(name = "CAR")
@Entity
public class Car {
@Id
private BigInteger id;
@Column(name = "model")
private String model;
}
And the repository is:
@Service
public interface CarRepository extends JpaRepository<Car, BigInteger>{
}
I just wannt to know if two threads are at the same time in sync method, is there any chance of getting DuplicateKeyException? or any exception in below sync method due to multi-threading?
@Transactional
public void sync(final BigInteger id) {
Car car = new Car(id, ....);
Car someOtherCar = new Car(....);
carRepository.save(car);
carRepository.save(someOtherCar);
carRepository.flush();
}
I tried the below code for testing purpose to insert the same car specs twice in a single thread and it works with no issues.
@Transactional
public void sync(final BigInteger id) {
Car car = new Car(id, ....);
Car sameCar = new Car(id, ....);
carRepository.save(car);
carRepository.save(sameCar);
carRepository.flush();
}
Please let me know your thoughts on this. Thanks
java multithreading hibernate jpa spring-data-jpa
asked Nov 25 '18 at 17:45
FarhanNayyerFarhanNayyer
33
Yes, it can, since two threads might try to insert the same ID concurrently.
– JB Nizet
Nov 25 '18 at 17:54
@JBNizet As I mentioned that I tried to insert two same car twice intentionally in a single thread, but It is working fine. Hibernate triggers INSERT query for the first call to "save" and UPDATE query for the second call to "save" method in that case.
– FarhanNayyer
Nov 25 '18 at 18:19
1
In a single thread, you don't have two concurrent insertions.
– JB Nizet
Nov 25 '18 at 18:50
add a comment |
I am new using concurrent programming techniques and wondering if the following flow can cause problems if executed in multiple-threads.
Please consider the following entity:
@Getter
@Setter
@Table(name = "CAR")
@Entity
public class Car {
@Id
private BigInteger id;
@Column(name = "model")
private String model;
}
And the repository is:
@Service
public interface CarRepository extends JpaRepository<Car, BigInteger>{
}
I just wannt to know if two threads are at the same time in sync method, is there any chance of getting DuplicateKeyException? or any exception in below sync method due to multi-threading?
@Transactional
public void sync(final BigInteger id) {
Car car = new Car(id, ....);
Car someOtherCar = new Car(....);
carRepository.save(car);
carRepository.save(someOtherCar);
carRepository.flush();
}
I tried the below code for testing purpose to insert the same car specs twice in a single thread and it works with no issues.
@Transactional
public void sync(final BigInteger id) {
Car car = new Car(id, ....);
Car sameCar = new Car(id, ....);
carRepository.save(car);
carRepository.save(sameCar);
carRepository.flush();
}
Please let me know your thoughts on this. Thanks
java multithreading hibernate jpa spring-data-jpa
asked Nov 25 '18 at 17:45
FarhanNayyerFarhanNayyer
33
I am new using concurrent programming techniques and wondering if the following flow can cause problems if executed in multiple-threads.
Please consider the following entity:
@Getter
@Setter
@Table(name = "CAR")
@Entity
public class Car {
@Id
private BigInteger id;
@Column(name = "model")
private String model;
}
And the repository is:
@Service
public interface CarRepository extends JpaRepository<Car, BigInteger>{
}
I just wannt to know if two threads are at the same time in sync method, is there any chance of getting DuplicateKeyException? or any exception in below sync method due to multi-threading?
@Transactional
public void sync(final BigInteger id) {
Car car = new Car(id, ....);
Car someOtherCar = new Car(....);
carRepository.save(car);
carRepository.save(someOtherCar);
carRepository.flush();
}
I tried the below code for testing purpose to insert the same car specs twice in a single thread and it works with no issues.
@Transactional
public void sync(final BigInteger id) {
Car car = new Car(id, ....);
Car sameCar = new Car(id, ....);
carRepository.save(car);
carRepository.save(sameCar);
carRepository.flush();
}
Please let me know your thoughts on this. Thanks
java multithreading hibernate jpa spring-data-jpa
java multithreading hibernate jpa spring-data-jpa
asked Nov 25 '18 at 17:45
FarhanNayyerFarhanNayyer
33
asked Nov 25 '18 at 17:45
FarhanNayyerFarhanNayyer
33
asked Nov 25 '18 at 17:45
FarhanNayyerFarhanNayyer
33
asked Nov 25 '18 at 17:45
FarhanNayyerFarhanNayyer
33
asked Nov 25 '18 at 17:45
FarhanNayyerFarhanNayyer
33
33
Yes, it can, since two threads might try to insert the same ID concurrently.
– JB Nizet
Nov 25 '18 at 17:54
@JBNizet As I mentioned that I tried to insert two same car twice intentionally in a single thread, but It is working fine. Hibernate triggers INSERT query for the first call to "save" and UPDATE query for the second call to "save" method in that case.
– FarhanNayyer
Nov 25 '18 at 18:19
1
In a single thread, you don't have two concurrent insertions.
– JB Nizet
Nov 25 '18 at 18:50
add a comment |
Yes, it can, since two threads might try to insert the same ID concurrently.
– JB Nizet
Nov 25 '18 at 17:54
@JBNizet As I mentioned that I tried to insert two same car twice intentionally in a single thread, but It is working fine. Hibernate triggers INSERT query for the first call to "save" and UPDATE query for the second call to "save" method in that case.
– FarhanNayyer
Nov 25 '18 at 18:19
1
In a single thread, you don't have two concurrent insertions.
– JB Nizet
Nov 25 '18 at 18:50
Yes, it can, since two threads might try to insert the same ID concurrently.
– JB Nizet
Nov 25 '18 at 17:54
Yes, it can, since two threads might try to insert the same ID concurrently.
– JB Nizet
Nov 25 '18 at 17:54
@JBNizet As I mentioned that I tried to insert two same car twice intentionally in a single thread, but It is working fine. Hibernate triggers INSERT query for the first call to "save" and UPDATE query for the second call to "save" method in that case.
– FarhanNayyer
Nov 25 '18 at 18:19
@JBNizet As I mentioned that I tried to insert two same car twice intentionally in a single thread, but It is working fine. Hibernate triggers INSERT query for the first call to "save" and UPDATE query for the second call to "save" method in that case.
– FarhanNayyer
Nov 25 '18 at 18:19
1
1
In a single thread, you don't have two concurrent insertions.
– JB Nizet
Nov 25 '18 at 18:50
In a single thread, you don't have two concurrent insertions.
– JB Nizet
Nov 25 '18 at 18:50
add a comment |
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Yes, it can, since two threads might try to insert the same ID concurrently.
– JB Nizet
Nov 25 '18 at 17:54
@JBNizet As I mentioned that I tried to insert two same car twice intentionally in a single thread, but It is working fine. Hibernate triggers INSERT query for the first call to "save" and UPDATE query for the second call to "save" method in that case.
– FarhanNayyer
Nov 25 '18 at 18:19
1
In a single thread, you don't have two concurrent insertions.
– JB Nizet
Nov 25 '18 at 18:50