跳到主要内容
跳到主要内容

Beta 和实验特性

因为 ClickHouse 是开源的,它不仅得到了 ClickHouse 员工的众多贡献,也得到了社区的贡献。这些贡献的开发速度往往不同;某些功能可能需要较长的原型制作阶段,或者需要更多的社区反馈和迭代时间,才能被认为是正式可用(GA)。

由于不确定何时功能被分为正式可用,我们将功能划分为两个类别:BetaExperimental

Beta 功能由 ClickHouse 团队正式支持。Experimental 功能是由 ClickHouse 团队或社区驱动的早期原型,不受官方支持。

下面的部分明确描述了 BetaExperimental 功能的属性:

Beta features

  • 正在积极开发中,以使其成为正式可用(GA)
  • 主要已知问题可以在 GitHub 上跟踪
  • 功能未来可能会发生变化
  • 可能在 ClickHouse Cloud 中启用
  • ClickHouse 团队支持 Beta 功能

您可以在下面找到被认为是 Beta 的功能,这些功能在 ClickHouse Cloud 中可用,并可在您的 ClickHouse Cloud 服务中使用。

注意:请确保使用当前版本的 ClickHouse compatibility 设置,以使用近期引入的功能。

Experimental features

  • 可能永远不会成为 GA
  • 可能会被移除
  • 可能引入严重的变化
  • 功能在将来可能会改变
  • 需要明确启用
  • ClickHouse 团队 不支持 实验性功能
  • 可能缺乏重要功能和文档
  • 在云中无法启用

请注意:除了上述列为 Beta 的功能外,不允许在 ClickHouse Cloud 中启用其他实验性功能。

Beta settings

NameDefault
geotoh3_argument_orderlat_lon
enable_lightweight_update1
allow_experimental_correlated_subqueries1
allow_experimental_parallel_reading_from_replicas0
parallel_replicas_moderead_tasks
parallel_replicas_count0
parallel_replica_offset0
parallel_replicas_custom_key``
parallel_replicas_custom_key_range_lower0
parallel_replicas_custom_key_range_upper0
cluster_for_parallel_replicas``
parallel_replicas_allow_in_with_subquery1
parallel_replicas_for_non_replicated_merge_tree0
parallel_replicas_min_number_of_rows_per_replica0
parallel_replicas_prefer_local_join1
parallel_replicas_mark_segment_size0
parallel_replicas_local_plan1
parallel_replicas_index_analysis_only_on_coordinator1
parallel_replicas_support_projection1
parallel_replicas_only_with_analyzer1
parallel_replicas_insert_select_local_pipeline1
parallel_replicas_connect_timeout_ms300
allow_experimental_database_iceberg0
allow_experimental_database_unity_catalog0
allow_experimental_database_glue_catalog0
session_timezone``
low_priority_query_wait_time_ms1000
allow_experimental_delta_kernel_rs1

Experimental settings

NameDefault
allow_experimental_replacing_merge_with_cleanup0
allow_experimental_reverse_key0
allow_remote_fs_zero_copy_replication0
enable_replacing_merge_with_cleanup_for_min_age_to_force_merge0
force_read_through_cache_for_merges0
merge_selector_algorithmSimple
notify_newest_block_number0
part_moves_between_shards_delay_seconds30
part_moves_between_shards_enable0
remote_fs_zero_copy_path_compatible_mode0
remote_fs_zero_copy_zookeeper_path/clickhouse/zero_copy
remove_rolled_back_parts_immediately1
shared_merge_tree_enable_coordinated_merges0
shared_merge_tree_enable_keeper_parts_extra_data0
shared_merge_tree_merge_coordinator_election_check_period_ms30000
shared_merge_tree_merge_coordinator_factor2
shared_merge_tree_merge_coordinator_fetch_fresh_metadata_period_ms10000
shared_merge_tree_merge_coordinator_max_merge_request_size20
shared_merge_tree_merge_coordinator_max_period_ms10000
shared_merge_tree_merge_coordinator_merges_prepare_count100
shared_merge_tree_merge_coordinator_min_period_ms1
shared_merge_tree_merge_worker_fast_timeout_ms100
shared_merge_tree_merge_worker_regular_timeout_ms10000
shared_merge_tree_virtual_parts_discovery_batch1
allow_experimental_time_time64_type0
allow_experimental_kafka_offsets_storage_in_keeper0
allow_experimental_delta_lake_writes0
allow_experimental_materialized_postgresql_table0
allow_experimental_funnel_functions0
allow_experimental_nlp_functions0
allow_experimental_hash_functions0
allow_experimental_object_type0
allow_experimental_time_series_table0
allow_experimental_codecs0
throw_on_unsupported_query_inside_transaction1
wait_changes_become_visible_after_commit_modewait_unknown
implicit_transaction0
grace_hash_join_initial_buckets1
grace_hash_join_max_buckets1024
join_to_sort_minimum_perkey_rows40
join_to_sort_maximum_table_rows10000
allow_experimental_join_right_table_sorting0
allow_statistics_optimize0
allow_experimental_statistics0
allow_experimental_full_text_index0
allow_experimental_live_view0
live_view_heartbeat_interval15
max_live_view_insert_blocks_before_refresh64
allow_experimental_window_view0
window_view_clean_interval60
window_view_heartbeat_interval15
wait_for_window_view_fire_signal_timeout10
stop_refreshable_materialized_views_on_startup0
allow_experimental_database_materialized_postgresql0
allow_experimental_qbit_type0
allow_experimental_query_deduplication0
allow_experimental_database_hms_catalog0
allow_experimental_kusto_dialect0
allow_experimental_prql_dialect0
enable_adaptive_memory_spill_scheduler0
allow_experimental_insert_into_iceberg0
allow_experimental_iceberg_compaction0
write_full_path_in_iceberg_metadata0
iceberg_metadata_compression_method``
make_distributed_plan0
distributed_plan_execute_locally0
distributed_plan_default_shuffle_join_bucket_count8
distributed_plan_default_reader_bucket_count8
distributed_plan_force_exchange_kind``
distributed_plan_max_rows_to_broadcast20000
allow_experimental_ytsaurus_table_engine0
allow_experimental_ytsaurus_table_function0
allow_experimental_ytsaurus_dictionary_source0
distributed_plan_force_shuffle_aggregation0
enable_join_runtime_filters0
join_runtime_bloom_filter_bytes524288
join_runtime_bloom_filter_hash_functions3
rewrite_in_to_join0
allow_experimental_time_series_aggregate_functions0
promql_database``
promql_table``
promql_evaluation_timeauto