risingwave_common/config/
mod.rs1pub mod batch;
21pub use batch::BatchConfig;
22pub mod frontend;
23pub use frontend::FrontendConfig;
24pub mod hba;
25pub use hba::{AddressPattern, AuthMethod, ConnectionType, HbaConfig, HbaEntry};
26pub mod meta;
27pub use meta::{
28 CheckpointCompression, CompactionConfig, DefaultParallelism, MetaBackend, MetaConfig,
29 MetaStoreConfig,
30};
31pub mod streaming;
32pub use streaming::{AsyncStackTraceOption, StreamingConfig};
33pub mod server;
34pub use server::{HeapProfilingConfig, ServerConfig};
35
36pub use crate::session_config::SessionInitConfig;
37pub mod udf;
38pub use udf::UdfConfig;
39pub mod storage;
40pub use storage::{
41 CacheEvictionConfig, EvictionConfig, ObjectStoreConfig, StorageConfig, StorageMemoryConfig,
42 extract_storage_memory_config,
43};
44pub mod merge;
45pub mod mutate;
46pub mod none_as_empty_string;
47pub mod role;
48pub mod system;
49pub mod utils;
50use std::collections::BTreeMap;
51use std::fs;
52use std::num::NonZeroUsize;
53
54use anyhow::Context;
55use clap::ValueEnum;
56use educe::Educe;
57pub use merge::*;
58use risingwave_common_proc_macro::ConfigDoc;
59pub use risingwave_common_proc_macro::OverrideConfig;
60use risingwave_pb::meta::SystemParams;
61pub use role::*;
62use serde::{Deserialize, Serialize, Serializer};
63use serde_default::DefaultFromSerde;
64use serde_json::Value;
65pub use system::SystemConfig;
66pub use utils::*;
67
68use crate::for_all_params;
69
70pub const MAX_CONNECTION_WINDOW_SIZE: u32 = (1 << 31) - 1;
73pub const STREAM_WINDOW_SIZE: u32 = 32 * 1024 * 1024; #[derive(Educe, Clone, Serialize, Deserialize, Default, ConfigDoc)]
80#[educe(Debug)]
81pub struct RwConfig {
82 #[serde(default)]
83 #[config_doc(nested)]
84 pub server: ServerConfig,
85
86 #[serde(default)]
87 #[config_doc(nested)]
88 pub meta: MetaConfig,
89
90 #[serde(default)]
91 #[config_doc(nested)]
92 pub batch: BatchConfig,
93
94 #[serde(default)]
95 #[config_doc(nested)]
96 pub frontend: FrontendConfig,
97
98 #[serde(default)]
99 #[config_doc(nested)]
100 pub streaming: StreamingConfig,
101
102 #[serde(default)]
103 #[config_doc(nested)]
104 pub storage: StorageConfig,
105
106 #[serde(default)]
107 #[educe(Debug(ignore))]
108 #[config_doc(nested)]
109 pub system: SystemConfig,
110
111 #[serde(default)]
112 #[config_doc(nested)]
113 pub udf: UdfConfig,
114
115 #[serde(default)]
116 #[config_doc(nested)]
117 pub session_init: SessionInitConfig,
118
119 #[serde(flatten)]
120 #[config_doc(omitted)]
121 pub unrecognized: Unrecognized<Self>,
122}
123
124#[serde_with::apply(Option => #[serde(with = "none_as_empty_string")])]
131#[derive(Clone, Debug, Serialize, Deserialize, DefaultFromSerde, ConfigDoc)]
132pub struct RpcClientConfig {
133 #[serde(default = "default::developer::rpc_client_connect_timeout_secs")]
134 pub connect_timeout_secs: u64,
135 #[serde(default = "default::developer::rpc_client_pool_setup_concurrency")]
138 pub pool_setup_concurrency: usize,
139}
140
141pub use risingwave_common_metrics::MetricLevel;
142
143impl RwConfig {
144 pub const fn default_connection_pool_size(&self) -> u16 {
145 self.server.connection_pool_size
146 }
147
148 pub fn streaming_exchange_connection_pool_size(&self) -> u16 {
151 self.streaming
152 .developer
153 .exchange_connection_pool_size
154 .unwrap_or_else(|| self.default_connection_pool_size())
155 }
156
157 pub fn batch_exchange_connection_pool_size(&self) -> u16 {
160 self.batch
161 .developer
162 .exchange_connection_pool_size
163 .unwrap_or_else(|| self.default_connection_pool_size())
164 }
165}
166
167pub mod default {
168
169 pub mod developer {
170 use crate::config::streaming::CacheRefillPolicy;
171
172 pub fn meta_cached_traces_num() -> u32 {
173 256
174 }
175
176 pub fn meta_cached_traces_memory_limit_bytes() -> usize {
177 1 << 27 }
179
180 pub fn batch_output_channel_size() -> usize {
181 64
182 }
183
184 pub fn batch_receiver_channel_size() -> usize {
185 1000
186 }
187
188 pub fn batch_root_stage_channel_size() -> usize {
189 100
190 }
191
192 pub fn batch_chunk_size() -> usize {
193 1024
194 }
195
196 pub fn batch_local_execute_buffer_size() -> usize {
197 64
198 }
199
200 pub fn batch_exchange_connection_pool_size() -> Option<u16> {
203 None
204 }
205
206 pub fn stream_enable_executor_row_count() -> bool {
207 false
208 }
209
210 pub fn connector_message_buffer_size() -> usize {
211 16
212 }
213
214 pub fn unsafe_stream_extreme_cache_size() -> usize {
215 10
216 }
217
218 pub fn stream_topn_cache_min_capacity() -> usize {
219 10
220 }
221
222 pub fn stream_chunk_size() -> usize {
223 256
224 }
225
226 pub fn stream_exchange_initial_permits() -> usize {
227 2048
228 }
229
230 pub fn stream_exchange_batched_permits() -> usize {
231 256
232 }
233
234 pub fn stream_exchange_concurrent_barriers() -> usize {
235 1
236 }
237
238 pub fn stream_exchange_concurrent_dispatchers() -> usize {
239 0
240 }
241
242 pub fn stream_project_expr_concurrency() -> usize {
243 1
244 }
245
246 pub fn stream_project_expr_inflight_request_concurrency() -> usize {
247 0
248 }
249
250 pub fn stream_dml_channel_initial_permits() -> usize {
251 32768
252 }
253
254 pub fn stream_max_barrier_batch_size() -> u32 {
255 1024
256 }
257
258 pub fn stream_hash_agg_max_dirty_groups_heap_size() -> usize {
259 64 << 20 }
261
262 pub fn enable_trivial_move() -> bool {
263 true
264 }
265
266 pub fn enable_check_task_level_overlap() -> bool {
267 false
268 }
269
270 pub fn max_trivial_move_task_count_per_loop() -> usize {
271 256
272 }
273
274 pub fn max_get_task_probe_times() -> usize {
275 5
276 }
277
278 pub fn actor_cnt_per_worker_parallelism_soft_limit() -> usize {
279 100
280 }
281
282 pub fn actor_cnt_per_worker_parallelism_hard_limit() -> usize {
283 400
284 }
285
286 pub fn hummock_time_travel_sst_info_fetch_batch_size() -> usize {
287 10_000
288 }
289
290 pub fn hummock_time_travel_sst_info_insert_batch_size() -> usize {
291 100
292 }
293
294 pub fn time_travel_vacuum_interval_sec() -> u64 {
295 30
296 }
297
298 pub fn time_travel_vacuum_max_version_count() -> Option<u32> {
299 Some(10000)
300 }
301
302 pub fn hummock_time_travel_epoch_version_insert_batch_size() -> usize {
303 1000
304 }
305
306 pub fn hummock_time_travel_delta_fetch_batch_size() -> usize {
307 100
308 }
309
310 pub fn hummock_gc_history_insert_batch_size() -> usize {
311 1000
312 }
313
314 pub fn hummock_time_travel_filter_out_objects_batch_size() -> usize {
315 1000
316 }
317
318 pub fn hummock_time_travel_filter_out_objects_v1() -> bool {
319 false
320 }
321
322 pub fn hummock_time_travel_filter_out_objects_list_version_batch_size() -> usize {
323 10
324 }
325
326 pub fn hummock_time_travel_filter_out_objects_list_delta_batch_size() -> usize {
327 1000
328 }
329
330 pub fn memory_controller_threshold_aggressive() -> f64 {
331 0.9
332 }
333
334 pub fn memory_controller_threshold_graceful() -> f64 {
335 0.81
336 }
337
338 pub fn memory_controller_threshold_stable() -> f64 {
339 0.72
340 }
341
342 pub fn memory_controller_eviction_factor_aggressive() -> f64 {
343 2.0
344 }
345
346 pub fn memory_controller_eviction_factor_graceful() -> f64 {
347 1.5
348 }
349
350 pub fn memory_controller_eviction_factor_stable() -> f64 {
351 1.0
352 }
353
354 pub fn memory_controller_update_interval_ms() -> usize {
355 100
356 }
357
358 pub fn memory_controller_sequence_tls_step() -> u64 {
359 128
360 }
361
362 pub fn memory_controller_sequence_tls_lag() -> u64 {
363 32
364 }
365
366 pub fn stream_enable_arrangement_backfill() -> bool {
367 true
368 }
369
370 pub fn stream_enable_snapshot_backfill() -> bool {
371 true
372 }
373
374 pub fn enable_shared_source() -> bool {
375 true
376 }
377
378 pub fn stream_high_join_amplification_threshold() -> usize {
379 2048
380 }
381
382 pub fn stream_high_gap_fill_amplification_threshold() -> usize {
383 2048
384 }
385
386 pub fn stream_exchange_connection_pool_size() -> Option<u16> {
388 Some(1)
389 }
390
391 pub fn enable_actor_tokio_metrics() -> bool {
392 true
393 }
394
395 pub fn stream_enable_auto_schema_change() -> bool {
396 true
397 }
398
399 pub fn switch_jdbc_pg_to_native() -> bool {
400 false
401 }
402
403 pub fn streaming_hash_join_entry_state_max_rows() -> usize {
404 30000
406 }
407
408 pub fn streaming_join_hash_map_evict_interval_rows() -> u32 {
409 16
410 }
411
412 pub fn streaming_now_progress_ratio() -> Option<f32> {
413 None
414 }
415
416 pub fn stream_snapshot_iter_rebuild_interval_secs() -> u64 {
417 10 * 60
418 }
419
420 pub fn enable_explain_analyze_stats() -> bool {
421 true
422 }
423
424 pub fn rpc_client_connect_timeout_secs() -> u64 {
425 5
426 }
427
428 pub fn rpc_client_pool_setup_concurrency() -> usize {
429 0
430 }
431
432 pub fn iceberg_list_interval_sec() -> u64 {
433 10
434 }
435
436 pub fn iceberg_fetch_batch_size() -> u64 {
437 1024
438 }
439
440 pub fn iceberg_sink_positional_delete_cache_size() -> usize {
441 1024
442 }
443
444 pub fn iceberg_sink_write_parquet_max_row_group_rows() -> usize {
445 100_000
446 }
447
448 pub fn materialize_force_overwrite_on_no_check() -> bool {
449 false
450 }
451
452 pub fn refresh_scheduler_interval_sec() -> u64 {
453 60
454 }
455
456 pub fn sync_log_store_pause_duration_ms() -> usize {
457 64
458 }
459
460 pub fn sync_log_store_buffer_size() -> usize {
461 2048
462 }
463
464 pub fn disable_sync_log_store_dispatcher() -> bool {
465 false
466 }
467
468 pub fn table_change_log_insert_batch_size() -> u64 {
469 1000
470 }
471
472 pub fn table_change_log_delete_batch_size() -> u64 {
473 1000
474 }
475
476 pub fn table_change_log_truncate_interval_sec() -> u64 {
477 600
478 }
479
480 pub fn enable_state_table_vnode_stats_pruning() -> bool {
481 false
482 }
483
484 pub fn cache_refill_policy() -> CacheRefillPolicy {
485 CacheRefillPolicy::Enabled
486 }
487
488 pub fn enable_vnode_key_stats_for_materialize() -> bool {
489 false
490 }
491
492 pub fn max_concurrent_kv_log_store_historical_read() -> usize {
493 0
494 }
495 }
496}
497
498pub const MAX_META_CACHE_SHARD_BITS: usize = 4;
499pub const MIN_BUFFER_SIZE_PER_SHARD: usize = 256;
500pub const MAX_BLOCK_CACHE_SHARD_BITS: usize = 6; #[cfg(test)]
503pub mod tests {
504 use expect_test::expect;
505 use risingwave_license::LicenseKey;
506
507 use super::*;
508
509 fn default_config_for_docs() -> RwConfig {
510 let mut config = RwConfig::default();
511 config.system.license_key = Some(LicenseKey::empty());
513 config.frontend.unsafe_enable_local_fs_connector = false;
515 config
516 }
517
518 #[test]
522 fn test_example_up_to_date() {
523 const HEADER: &str = "# This file is generated by ./risedev generate-example-config
524# Check detailed comments in src/common/src/config.rs";
525
526 let actual = expect_test::expect_file!["../../../config/example.toml"];
527 let default = toml::to_string(&default_config_for_docs()).expect("failed to serialize");
528
529 let expected = format!("{HEADER}\n\n{default}");
530 actual.assert_eq(&expected);
531
532 let expected = rw_config_to_markdown();
533 let actual = expect_test::expect_file!["../../../config/docs.md"];
534 actual.assert_eq(&expected);
535 }
536
537 #[test]
538 fn test_session_init_entries_distinguishes_omitted_from_default() {
539 let config: RwConfig = toml::from_str(
540 r#"
541 [session_init]
542 streaming_parallelism = "bounded(8)"
543 streaming_parallelism_for_table = "default"
544 "#,
545 )
546 .unwrap();
547
548 assert_eq!(
550 config.session_init.streaming_parallelism.as_deref(),
551 Some("bounded(8)")
552 );
553 assert_eq!(
554 config
555 .session_init
556 .streaming_parallelism_for_table
557 .as_deref(),
558 Some("default")
559 );
560 assert_eq!(config.session_init.streaming_parallelism_for_sink, None);
561
562 assert_eq!(
564 config.session_init.entries(),
565 vec![
566 ("streaming_parallelism", "bounded(8)"),
567 ("streaming_parallelism_for_table", "default"),
568 ]
569 );
570 }
571
572 #[test]
573 fn test_session_init_rejects_unrecognized_key() {
574 let err = toml::from_str::<RwConfig>(
575 r#"
576 [session_init]
577 streaming_parallelism = "bounded(8)"
578 not_a_real_param = "oops"
579 "#,
580 )
581 .unwrap_err();
582
583 assert!(err.to_string().contains("unknown field `not_a_real_param`"));
584 }
585
586 #[derive(Debug)]
587 struct ConfigItemDoc {
588 desc: String,
589 default: String,
590 }
591
592 fn rw_config_to_markdown() -> String {
593 let mut config_rustdocs = BTreeMap::<String, Vec<(String, String)>>::new();
594 RwConfig::config_docs("".to_owned(), &mut config_rustdocs);
595
596 let mut configs: BTreeMap<String, BTreeMap<String, ConfigItemDoc>> = config_rustdocs
598 .into_iter()
599 .map(|(k, v)| {
600 let docs: BTreeMap<String, ConfigItemDoc> = v
601 .into_iter()
602 .map(|(name, desc)| {
603 (
604 name,
605 ConfigItemDoc {
606 desc,
607 default: "".to_owned(), },
609 )
610 })
611 .collect();
612 (k, docs)
613 })
614 .collect();
615
616 let toml_doc: BTreeMap<String, toml::Value> =
617 toml::from_str(&toml::to_string(&default_config_for_docs()).unwrap()).unwrap();
618 toml_doc.into_iter().for_each(|(name, value)| {
619 set_default_values("".to_owned(), name, value, &mut configs);
620 });
621
622 let mut markdown = "# RisingWave System Configurations\n\n".to_owned()
623 + "This page is automatically generated by `./risedev generate-example-config`\n";
624 for (section, configs) in configs {
625 if configs.is_empty() {
626 continue;
627 }
628 markdown.push_str(&format!("\n## {}\n\n", section));
629 markdown.push_str("| Config | Description | Default |\n");
630 markdown.push_str("|--------|-------------|---------|\n");
631 for (config, doc) in configs {
632 markdown.push_str(&format!(
633 "| {} | {} | {} |\n",
634 config, doc.desc, doc.default
635 ));
636 }
637 }
638 markdown
639 }
640
641 fn set_default_values(
642 section: String,
643 name: String,
644 value: toml::Value,
645 configs: &mut BTreeMap<String, BTreeMap<String, ConfigItemDoc>>,
646 ) {
647 if let toml::Value::Table(table) = value {
649 let section_configs: BTreeMap<String, toml::Value> = table.into_iter().collect();
650 let sub_section = if section.is_empty() {
651 name
652 } else {
653 format!("{}.{}", section, name)
654 };
655 section_configs
656 .into_iter()
657 .for_each(|(k, v)| set_default_values(sub_section.clone(), k, v, configs))
658 } else if let Some(t) = configs.get_mut(§ion)
659 && let Some(item_doc) = t.get_mut(&name)
660 {
661 item_doc.default = format!("{}", value);
662 }
663 }
664
665 #[test]
666 fn test_object_store_configs_backward_compatibility() {
667 {
669 let config: RwConfig = toml::from_str(
670 r#"
671 [storage.object_store]
672 object_store_set_atomic_write_dir = true
673
674 [storage.object_store.s3]
675 object_store_keepalive_ms = 1
676 object_store_send_buffer_size = 1
677 object_store_recv_buffer_size = 1
678 object_store_nodelay = false
679
680 [storage.object_store.s3.developer]
681 object_store_retry_unknown_service_error = true
682 object_store_retryable_service_error_codes = ['dummy']
683
684
685 "#,
686 )
687 .unwrap();
688
689 assert!(config.storage.object_store.set_atomic_write_dir);
690 assert_eq!(config.storage.object_store.s3.keepalive_ms, Some(1));
691 assert_eq!(config.storage.object_store.s3.send_buffer_size, Some(1));
692 assert_eq!(config.storage.object_store.s3.recv_buffer_size, Some(1));
693 assert_eq!(config.storage.object_store.s3.nodelay, Some(false));
694 assert!(
695 config
696 .storage
697 .object_store
698 .s3
699 .developer
700 .retry_unknown_service_error
701 );
702 assert_eq!(
703 config
704 .storage
705 .object_store
706 .s3
707 .developer
708 .retryable_service_error_codes,
709 vec!["dummy".to_owned()]
710 );
711 }
712
713 {
715 let config: RwConfig = toml::from_str(
716 r#"
717 [storage.object_store]
718 set_atomic_write_dir = true
719
720 [storage.object_store.s3]
721 keepalive_ms = 1
722 send_buffer_size = 1
723 recv_buffer_size = 1
724 nodelay = false
725
726 [storage.object_store.s3.developer]
727 retry_unknown_service_error = true
728 retryable_service_error_codes = ['dummy']
729
730
731 "#,
732 )
733 .unwrap();
734
735 assert!(config.storage.object_store.set_atomic_write_dir);
736 assert_eq!(config.storage.object_store.s3.keepalive_ms, Some(1));
737 assert_eq!(config.storage.object_store.s3.send_buffer_size, Some(1));
738 assert_eq!(config.storage.object_store.s3.recv_buffer_size, Some(1));
739 assert_eq!(config.storage.object_store.s3.nodelay, Some(false));
740 assert!(
741 config
742 .storage
743 .object_store
744 .s3
745 .developer
746 .retry_unknown_service_error
747 );
748 assert_eq!(
749 config
750 .storage
751 .object_store
752 .s3
753 .developer
754 .retryable_service_error_codes,
755 vec!["dummy".to_owned()]
756 );
757 }
758 }
759
760 #[test]
761 fn test_file_cache_separated_runtime_config_backward_compatibility() {
762 let config: RwConfig = toml::from_str(
763 r#"
764 [storage.data_file_cache.runtime_config.Separated.read_runtime_options]
765 worker_threads = 2
766 max_blocking_threads = 4
767
768 [storage.data_file_cache.runtime_config.Separated.write_runtime_options]
769 worker_threads = 6
770 max_blocking_threads = 8
771 "#,
772 )
773 .unwrap();
774
775 let storage::FileCacheRuntimeConfig::Separated {
776 read_runtime_options,
777 write_runtime_options,
778 } = config.storage.data_file_cache.runtime_config
779 else {
780 panic!("expected legacy separated file-cache runtime config");
781 };
782 assert_eq!(read_runtime_options.worker_threads, 2);
783 assert_eq!(read_runtime_options.max_blocking_threads, 4);
784 assert_eq!(write_runtime_options.worker_threads, 6);
785 assert_eq!(write_runtime_options.max_blocking_threads, 8);
786 }
787
788 #[test]
789 fn test_meta_configs_backward_compatibility() {
790 {
792 let config: RwConfig = toml::from_str(
793 r#"
794 [meta]
795 periodic_split_compact_group_interval_sec = 1
796 table_write_throughput_threshold = 10
797 min_table_split_write_throughput = 5
798 "#,
799 )
800 .unwrap();
801
802 assert_eq!(
803 config
804 .meta
805 .periodic_scheduling_compaction_group_split_interval_sec,
806 1
807 );
808 assert_eq!(config.meta.table_high_write_throughput_threshold, 10);
809 assert_eq!(config.meta.table_low_write_throughput_threshold, 5);
810 }
811 }
812
813 #[test]
814 fn test_meta_max_normalize_splits_per_round_must_be_positive() {
815 let config = toml::from_str::<RwConfig>(
816 r#"
817 [meta]
818 max_normalize_splits_per_round = 0
819 "#,
820 )
821 .unwrap_err();
822
823 expect![[r#"
824 TOML parse error at line 3, column 46
825 |
826 3 | max_normalize_splits_per_round = 0
827 | ^
828 meta.max_normalize_splits_per_round must be greater than 0
829 "#]]
830 .assert_eq(&config.to_string());
831 }
832
833 #[test]
836 fn test_prefix_alias() {
837 let config: RwConfig = toml::from_str(
838 "
839 [streaming.developer]
840 stream_chunk_size = 114514
841
842 [streaming.developer.stream_compute_client_config]
843 connect_timeout_secs = 42
844 pool_setup_concurrency = 10
845 ",
846 )
847 .unwrap();
848
849 assert_eq!(config.streaming.developer.chunk_size, 114514);
850 assert_eq!(
851 config
852 .streaming
853 .developer
854 .compute_client_config
855 .connect_timeout_secs,
856 42
857 );
858 assert_eq!(
859 config
860 .streaming
861 .developer
862 .compute_client_config
863 .pool_setup_concurrency,
864 10
865 );
866 }
867
868 #[test]
869 fn test_prefix_alias_duplicate() {
870 let config = toml::from_str::<RwConfig>(
871 "
872 [streaming.developer]
873 stream_chunk_size = 114514
874 chunk_size = 1919810
875 ",
876 )
877 .unwrap_err();
878
879 expect![[r#"
880 TOML parse error at line 2, column 13
881 |
882 2 | [streaming.developer]
883 | ^^^^^^^^^^^^^^^^^^^^^
884 duplicate field `chunk_size`
885 "#]]
886 .assert_eq(&config.to_string());
887
888 let config = toml::from_str::<RwConfig>(
889 "
890 [streaming.developer.stream_compute_client_config]
891 connect_timeout_secs = 5
892
893 [streaming.developer.compute_client_config]
894 connect_timeout_secs = 10
895 ",
896 )
897 .unwrap_err();
898
899 expect![[r#"
900 TOML parse error at line 2, column 24
901 |
902 2 | [streaming.developer.stream_compute_client_config]
903 | ^^^^^^^^^
904 duplicate field `compute_client_config`
905 "#]]
906 .assert_eq(&config.to_string());
907 }
908
909 #[test]
910 fn test_storage_max_prefetch_block_number_must_be_positive() {
911 let config = toml::from_str::<RwConfig>(
912 r#"
913 [storage]
914 max_prefetch_block_number = 0
915 "#,
916 )
917 .unwrap_err();
918
919 expect![[r#"
920 TOML parse error at line 3, column 41
921 |
922 3 | max_prefetch_block_number = 0
923 | ^
924 storage.max_prefetch_block_number must be greater than 0
925 "#]]
926 .assert_eq(&config.to_string());
927 }
928
929 #[test]
930 fn test_storage_iceberg_compaction_pull_interval_ms_must_be_positive() {
931 let config = toml::from_str::<RwConfig>(
932 r#"
933 [storage]
934 iceberg_compaction_pull_interval_ms = 0
935 "#,
936 )
937 .unwrap_err();
938
939 expect![[r#"
940 TOML parse error at line 3, column 51
941 |
942 3 | iceberg_compaction_pull_interval_ms = 0
943 | ^
944 storage.iceberg_compaction_pull_interval_ms must be greater than 0
945 "#]]
946 .assert_eq(&config.to_string());
947 }
948}