boto3 Dynamodbbatch_writer如何执行回滚

Question

我正在使用boto3访问AWS Dynamodb表并批量写入它，下面是示例代码：

with table.batch_writer() as batch:
    try:
        for i in range(10):
            id = uuid.uuid4().hex

            # A function which perform a job and finish with write to the table
            # If the job fails, the function will raise an exception
            write_to_table(batch, id)
    except:
        # Perform a rollback
        print("{} failed".format(id))

是否可以使用BatchWriteItem对整个批执行回滚？（例如，在块中除外）。

谢谢

Answer 1

我找到了一个解决方案，但我不确定这是不是一个好的解决方案：

batch = table.batch_writer()
try:
    for i in range(10):
        id = uuid.uuid4().hex
        write_to_table(batch, id)

    batch._flush()
except:
    print("passive rollback")