ベータと実験的な機能

Because ClickHouse is open-source, it receives many contributions not only from ClickHouse employees but also from the community. These contributions are often developed at different speeds; certain features may require a lengthy prototyping phase or more time for sufficient community feedback and iteration to be considered generally available (GA).

ClickHouseがオープンソースであるため、ClickHouseの社員だけでなくコミュニティからも多くの貢献を受けています。これらの貢献は多くの場合、異なる速度で開発されます; 特定の機能は、一般に利用可能（GA）と見なされるために長いプロトタイピングフェーズや十分なコミュニティのフィードバックおよび反復を必要とする場合があります。

Due to the uncertainty of when features are classified as generally available, we delineate features into two categories: Beta and Experimental.

機能が一般に利用可能として分類されるタイミングの不確実性のため、機能を2つのカテゴリに分けます: Beta および Experimental。

Beta features are officially supported by the ClickHouse team. Experimental features are early prototypes driven by either the ClickHouse team or the community and are not officially supported.

Beta 機能は ClickHouse チームによって正式にサポートされています。Experimental 機能は ClickHouse チームまたはコミュニティによって推進される初期プロトタイプであり、正式にサポートされていません。

The sections below explicitly describe the properties of Beta and Experimental features:

以下のセクションでは、Beta および Experimental 機能の特性を明示的に説明します。

Beta features

Under active development to make them generally available (GA)
Main known issues can be tracked on GitHub
Functionality may change in the future
Possibly enabled in ClickHouse Cloud
The ClickHouse team supports beta features

Beta 機能

一般に利用可能（GA）にするために積極的に開発中
主な既知の問題は GitHub で追跡可能
機能は今後変更される可能性があります
ClickHouse Cloud で有効にされる場合があります
ClickHouse チームはベータ機能をサポートします

You can find below the features considered Beta in ClickHouse Cloud and are available for use in your ClickHouse Cloud Services.

以下に、ClickHouse Cloud でベータと見なされている機能を示し、あなたの ClickHouse Cloud サービスでの使用が可能です。

Note: please be sure to be using a current version of the ClickHouse compatibility setting to be using a recently introduced feature.

注: 最近導入された機能を使用するために、ClickHouseの互換性設定の最新バージョンを使用していることを確認してください。

Experimental features

May never become GA
May be removed
Can introduce breaking changes
Functionality may change in the feature
Need to be deliberately enabled
The ClickHouse team does not support experimental features
May lack important functionality and documentation
Cannot be enabled in the cloud

Experimental 機能

決して GA にならない可能性があります
削除される可能性があります
破壊的変更を導入する可能性があります
機能は今後変更される可能性があります
明示的に有効にする必要があります
ClickHouse チームは Experimental 機能をサポートしていません
重要な機能やドキュメントが欠けている可能性があります
クラウドで有効にすることはできません

Please note: no additional experimental features are allowed to be enabled in ClickHouse Cloud other than those listed above as Beta.

ご注意: 上記の Beta としてリストされているもの以外の追加の Experimental 機能は、ClickHouse Cloud で有効にすることはできません。

Beta settings

Name	Default
geotoh3_argument_order	`lat_lon`
enable_lightweight_update	`1`
allow_experimental_correlated_subqueries	`1`
allow_experimental_parallel_reading_from_replicas	`0`
parallel_replicas_mode	`read_tasks`
parallel_replicas_count	`0`
parallel_replica_offset	`0`
parallel_replicas_custom_key	``
parallel_replicas_custom_key_range_lower	`0`
parallel_replicas_custom_key_range_upper	`0`
cluster_for_parallel_replicas	``
parallel_replicas_allow_in_with_subquery	`1`
parallel_replicas_for_non_replicated_merge_tree	`0`
parallel_replicas_min_number_of_rows_per_replica	`0`
parallel_replicas_prefer_local_join	`1`
parallel_replicas_mark_segment_size	`0`
parallel_replicas_local_plan	`1`
parallel_replicas_index_analysis_only_on_coordinator	`1`
parallel_replicas_support_projection	`1`
parallel_replicas_only_with_analyzer	`1`
parallel_replicas_insert_select_local_pipeline	`1`
parallel_replicas_connect_timeout_ms	`300`
allow_experimental_database_iceberg	`0`
allow_experimental_database_unity_catalog	`0`
allow_experimental_database_glue_catalog	`0`
session_timezone	``
low_priority_query_wait_time_ms	`1000`
allow_experimental_delta_kernel_rs	`1`

Experimental settings

Name	Default
allow_experimental_replacing_merge_with_cleanup	`0`
allow_experimental_reverse_key	`0`
allow_remote_fs_zero_copy_replication	`0`
enable_replacing_merge_with_cleanup_for_min_age_to_force_merge	`0`
force_read_through_cache_for_merges	`0`
merge_selector_algorithm	`Simple`
notify_newest_block_number	`0`
part_moves_between_shards_delay_seconds	`30`
part_moves_between_shards_enable	`0`
remote_fs_zero_copy_path_compatible_mode	`0`
remote_fs_zero_copy_zookeeper_path	`/clickhouse/zero_copy`
remove_rolled_back_parts_immediately	`1`
shared_merge_tree_enable_coordinated_merges	`0`
shared_merge_tree_enable_keeper_parts_extra_data	`0`
shared_merge_tree_merge_coordinator_election_check_period_ms	`30000`
shared_merge_tree_merge_coordinator_factor	`2`
shared_merge_tree_merge_coordinator_fetch_fresh_metadata_period_ms	`10000`
shared_merge_tree_merge_coordinator_max_merge_request_size	`20`
shared_merge_tree_merge_coordinator_max_period_ms	`10000`
shared_merge_tree_merge_coordinator_merges_prepare_count	`100`
shared_merge_tree_merge_coordinator_min_period_ms	`1`
shared_merge_tree_merge_worker_fast_timeout_ms	`100`
shared_merge_tree_merge_worker_regular_timeout_ms	`10000`
shared_merge_tree_virtual_parts_discovery_batch	`1`
allow_experimental_time_time64_type	`0`
allow_experimental_kafka_offsets_storage_in_keeper	`0`
allow_experimental_delta_lake_writes	`0`
allow_experimental_materialized_postgresql_table	`0`
allow_experimental_funnel_functions	`0`
allow_experimental_nlp_functions	`0`
allow_experimental_hash_functions	`0`
allow_experimental_object_type	`0`
allow_experimental_time_series_table	`0`
allow_experimental_codecs	`0`
throw_on_unsupported_query_inside_transaction	`1`
wait_changes_become_visible_after_commit_mode	`wait_unknown`
implicit_transaction	`0`
grace_hash_join_initial_buckets	`1`
grace_hash_join_max_buckets	`1024`
join_to_sort_minimum_perkey_rows	`40`
join_to_sort_maximum_table_rows	`10000`
allow_experimental_join_right_table_sorting	`0`
allow_statistics_optimize	`0`
allow_experimental_statistics	`0`
allow_experimental_full_text_index	`0`
allow_experimental_live_view	`0`
live_view_heartbeat_interval	`15`
max_live_view_insert_blocks_before_refresh	`64`
allow_experimental_window_view	`0`
window_view_clean_interval	`60`
window_view_heartbeat_interval	`15`
wait_for_window_view_fire_signal_timeout	`10`
stop_refreshable_materialized_views_on_startup	`0`
allow_experimental_database_materialized_postgresql	`0`
allow_experimental_qbit_type	`0`
allow_experimental_query_deduplication	`0`
allow_experimental_database_hms_catalog	`0`
allow_experimental_kusto_dialect	`0`
allow_experimental_prql_dialect	`0`
enable_adaptive_memory_spill_scheduler	`0`
allow_experimental_insert_into_iceberg	`0`
allow_experimental_iceberg_compaction	`0`
write_full_path_in_iceberg_metadata	`0`
iceberg_metadata_compression_method	``
make_distributed_plan	`0`
distributed_plan_execute_locally	`0`
distributed_plan_default_shuffle_join_bucket_count	`8`
distributed_plan_default_reader_bucket_count	`8`
distributed_plan_force_exchange_kind	``
distributed_plan_max_rows_to_broadcast	`20000`
allow_experimental_ytsaurus_table_engine	`0`
allow_experimental_ytsaurus_table_function	`0`
allow_experimental_ytsaurus_dictionary_source	`0`
distributed_plan_force_shuffle_aggregation	`0`
enable_join_runtime_filters	`0`
join_runtime_bloom_filter_bytes	`524288`
join_runtime_bloom_filter_hash_functions	`3`
rewrite_in_to_join	`0`
allow_experimental_time_series_aggregate_functions	`0`
promql_database	``
promql_table	``
promql_evaluation_time	`auto`

Beta features​

Beta 機能​

Experimental features​

Experimental 機能​

Beta settings​

Experimental settings​