2
有两个函数A和B与事务注释中定义的。Propagation.REQUIRES_NEW引起LockWaitTimeOutException
我从A.
@Transactional(value=Constants.READ_WRITE_REQUEST)
public int A(....){
B();
}
@Transactional(propagation=Propagation.REQUIRES_NEW,value=Constants.READ_WRITE_REQUEST)
public int B(....){
C();
}
@Transactional(value=Constants.READ_WRITE_REQUEST)
public int C(....){
...
}
它导致调用B插入
Caused by: java.sql.SQLException: Lock wait timeout exceeded; try restarting transaction
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3491)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3423)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2542)
我从功能B和问题取出Propagation.REQUIRES_NEW得到了解决。
是因为旧的交易持有锁而新的交易创建了吗? 对此有何想法?