ulwx opened a new issue, #24332:
URL: https://github.com/apache/shardingsphere/issues/24332
```
GlobalTransaction globalTransaction =
GlobalTransactionContext.getCurrentOrCreate();
globalTransaction.begin(timeout * 1000);
TransactionTypeHolder.set(TransactionType.BASE);
try{
doInsert();
}finally {
TransactionTypeHolder.clear();
}
globalTransaction.commit();
```
When the above code is running, doInsert() will throw a null exception,
which is thrown by the commit() method in doInsert(). The reason is that when
the shardingjdbc proxy commit() method is used, because the
SeataATShardingSphereTransactionManager # begin() method has not been executed
because of the existence of GlobalTransaction on the periphery, the
TransactionTypeHolder # set() method has not been executed and is always empty,
Thus, when the shardingjdbc agent commit() method is executed, the query is
null through TransactionTypeHolder # get(), and a null pointer exception is
reported！
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