doris2.1.5非分区表自动分桶功能在使用的时候，分桶数不增加为什么呢？
"estimate_partition_size" = "1G"
CREATE TABLE `xxx` (
xxxx
) ENGINE=OLAP
UNIQUE KEY(`record_id`, `policy_name`)
DISTRIBUTED BY HASH(`record_id`, `policy_name`) BUCKETS AUTO
PROPERTIES (
"replication_allocation" = "tag.location.default: 3",
"min_load_replica_num" = "-1",
"is_being_synced" = "false",
"storage_medium" = "hdd",
"storage_format" = "V2",
"inverted_index_storage_format" = "V1",
"estimate_partition_size" = "1G",
"enable_unique_key_merge_on_write" = "true",
"light_schema_change" = "true",
"disable_auto_compaction" = "false",
"enable_single_replica_compaction" = "false",
"group_commit_interval_ms" = "10000",
"group_commit_data_bytes" = "134217728",
"enable_mow_light_delete" = "false"
);
