DateV2类型类型写入不进去数据，改成varchar就可以了，是怎么回事？

CREATE TABLE IF NOT EXISTS demo.cdp_metric_test
(
        team_id bigint comment '店铺id',
    user_id varchar(64) comment '用户id',
    metric_code varchar(64) comment '特征code',
    metric_value varchar(256) comment '特征value',
    version varchar(64) comment '版本号',
    par datev2 comment '分区，格式yyyyMMdd'
)
DUPLICATE KEY(team_id,user_id)
PARTITION BY RANGE(par)()
DISTRIBUTED BY HASH(team_id)
PROPERTIES
(
    "dynamic_partition.enable" = "true",
    "dynamic_partition.time_unit" = "DAY",
    "dynamic_partition.end" = "3",
    "dynamic_partition.prefix" = "p",
    "dynamic_partition.buckets" = "8",
        "replication_num" = "1"
);