[opt](cloud) Prioritize scheduling the most recently active tablets in cloud by deardeng · Pull Request #59539 · apache/doris

deardeng · 2026-01-04T11:19:52Z

What problem does this PR solve?

Starting from the getBackendId of the replica, implement a sliding window approach (in TabletAccessStats.java) to count read and write operations over the last hour. The accuracy of this count isn't critical, as the aim is to indicate relative activity levels.
Display these statistics in the SHOW TABLETS FROM TABLE and SHOW TABLET {tabletId} commands.

show tablet 1767773242851\G
***************************[ 1. row ]***************************
...
AccessCount1H | 1107
LastAccessTime | 1767782384995
...

Integrate with the existing balancing strategy:

For each scheduling operation, identify active databases, tables, and partitions from the active tablets. Schedule operations first on the most active databases, tables, and partitions.
When selecting tablets from the source BE, modify the previous random selection to prioritize non-active tablets for scheduling, keeping active tablets as stable as possible on the source.

Issue Number: close #xxx

Related PR: #xxx

Problem Summary:

Release note

None

Check List (For Author)

Test
- Regression test
- Unit Test
- Manual test (add detailed scripts or steps below)
- No need to test or manual test. Explain why:
  - This is a refactor/code format and no logic has been changed.
  - Previous test can cover this change.
  - No code files have been changed.
  - Other reason
Behavior changed:
- No.
- Yes.
Does this need documentation?
- No.
- Yes.

Check List (For Reviewer who merge this PR)

Confirm the release note
Confirm test cases
Confirm document
Add branch pick label

hello-stephen · 2026-01-04T11:19:57Z

Thank you for your contribution to Apache Doris.
Don't know what should be done next? See How to process your PR.

Please clearly describe your PR:

What problem was fixed (it's best to include specific error reporting information). How it was fixed.
Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
What features were added. Why was this function added?
Which code was refactored and why was this part of the code refactored?
Which functions were optimized and what is the difference before and after the optimization?

deardeng · 2026-01-08T10:01:09Z

run buildall

deardeng · 2026-01-08T10:27:22Z

run buildall

doris-robot · 2026-01-08T10:47:09Z

TPC-H: Total hot run time: 31449 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpch-tools
Tpch sf100 test result on commit 51e3d4ba0880d99c10399578a6c5f5d5b98f03a3, data reload: false
------ Round 1 ----------------------------------
q1	17641	4341	4076	4076
q2	2073	384	241	241
q3	10096	1289	707	707
q4	10209	864	326	326
q5	7495	2109	1880	1880
q6	201	175	139	139
q7	944	792	671	671
q8	9286	1413	1149	1149
q9	4855	4462	4552	4462
q10	6729	1825	1431	1431
q11	514	310	288	288
q12	693	726	607	607
q13	17776	3796	3106	3106
q14	295	301	284	284
q15	585	514	504	504
q16	665	666	624	624
q17	663	842	452	452
q18	6580	6521	6446	6446
q19	943	965	610	610
q20	394	358	250	250
q21	3004	2484	2222	2222
q22	1020	1032	974	974
Total cold run time: 102661 ms
Total hot run time: 31449 ms
----- Round 2, with runtime_filter_mode=off -----
q1	4107	4058	4045	4045
q2	338	390	315	315
q3	2130	2581	2242	2242
q4	1342	1743	1312	1312
q5	4114	3977	4048	3977
q6	215	170	134	134
q7	1893	1825	1675	1675
q8	2833	2547	2533	2533
q9	7289	7272	7297	7272
q10	2773	2786	2318	2318
q11	560	511	456	456
q12	748	792	659	659
q13	3684	4036	3376	3376
q14	300	305	311	305
q15	562	498	523	498
q16	646	737	640	640
q17	1136	1325	1379	1325
q18	8275	7748	8011	7748
q19	831	836	882	836
q20	1998	2107	1932	1932
q21	4780	4607	4392	4392
q22	1200	1088	1047	1047
Total cold run time: 51754 ms
Total hot run time: 49037 ms

doris-robot · 2026-01-08T10:58:11Z

TPC-DS: Total hot run time: 176500 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpcds-tools
TPC-DS sf100 test result on commit 51e3d4ba0880d99c10399578a6c5f5d5b98f03a3, data reload: false
query5	4562	654	491	491
query6	359	260	239	239
query7	4227	478	286	286
query8	335	270	239	239
query9	8794	2676	2690	2676
query10	490	397	348	348
query11	15112	15207	14956	14956
query12	191	127	121	121
query13	1272	515	414	414
query14	7851	3075	2788	2788
query14_1	2728	2685	2735	2685
query15	195	191	182	182
query16	991	498	478	478
query17	1372	711	600	600
query18	2715	436	363	363
query19	241	238	207	207
query20	140	123	118	118
query21	221	150	134	134
query22	3963	4034	3851	3851
query23	17008	16268	15790	15790
query23_1	15955	16038	15814	15814
query24	7146	1622	1223	1223
query24_1	1247	1295	1267	1267
query25	606	503	444	444
query26	1249	271	162	162
query27	2732	479	303	303
query28	4452	2219	2181	2181
query29	799	594	512	512
query30	305	244	207	207
query31	812	650	581	581
query32	80	73	64	64
query33	538	345	300	300
query34	925	953	577	577
query35	744	759	701	701
query36	928	914	885	885
query37	133	93	79	79
query38	2770	2766	2778	2766
query39	767	741	717	717
query39_1	699	720	711	711
query40	224	141	140	140
query41	68	62	63	62
query42	104	100	99	99
query43	489	471	446	446
query44	1414	785	789	785
query45	191	186	185	185
query46	899	1042	650	650
query47	1514	1503	1430	1430
query48	333	367	271	271
query49	613	456	343	343
query50	708	313	214	214
query51	3841	3803	3828	3803
query52	122	112	105	105
query53	312	348	287	287
query54	316	280	256	256
query55	83	86	75	75
query56	312	346	311	311
query57	1076	1019	993	993
query58	265	280	266	266
query59	2162	2254	2226	2226
query60	345	367	317	317
query61	199	183	178	178
query62	406	358	323	323
query63	320	281	282	281
query64	5007	1340	1042	1042
query65	3784	3799	3792	3792
query66	1360	411	315	315
query67	15109	15182	15248	15182
query68	6251	1048	744	744
query69	518	364	347	347
query70	1125	1027	1049	1027
query71	390	314	301	301
query72	6074	3368	3433	3368
query73	794	764	333	333
query74	8861	8907	8571	8571
query75	2810	2830	2435	2435
query76	3930	1128	692	692
query77	513	407	296	296
query78	9715	9690	9127	9127
query79	1595	987	634	634
query80	668	634	532	532
query81	531	285	248	248
query82	248	158	121	121
query83	312	286	258	258
query84	266	140	115	115
query85	1011	617	571	571
query86	396	343	324	324
query87	2958	3019	2856	2856
query88	4353	2290	2305	2290
query89	413	369	354	354
query90	2202	167	161	161
query91	196	186	160	160
query92	86	79	74	74
query93	1846	1021	565	565
query94	590	375	275	275
query95	601	417	324	324
query96	657	538	232	232
query97	2389	2395	2328	2328
query98	251	242	228	228
query99	618	584	508	508
Total cold run time: 259275 ms
Total hot run time: 176500 ms

deardeng · 2026-01-19T12:37:23Z

run buildall

doris-robot · 2026-01-19T12:59:36Z

TPC-H: Total hot run time: 31786 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpch-tools
Tpch sf100 test result on commit 0dbd4cfb060a12c1ae84fe6652a1ebe63bc929e2, data reload: false
------ Round 1 ----------------------------------
q1	17643	4222	4022	4022
q2	2073	351	231	231
q3	10150	1246	737	737
q4	10195	774	299	299
q5	7503	2086	1818	1818
q6	183	169	132	132
q7	907	765	644	644
q8	9267	1417	1128	1128
q9	4875	4557	4541	4541
q10	6714	1783	1396	1396
q11	496	288	284	284
q12	679	741	576	576
q13	17804	3852	3054	3054
q14	285	291	278	278
q15	583	507	525	507
q16	700	688	620	620
q17	643	755	538	538
q18	6611	6516	6731	6516
q19	1113	1015	698	698
q20	419	389	259	259
q21	3317	2633	2458	2458
q22	1139	1104	1050	1050
Total cold run time: 103299 ms
Total hot run time: 31786 ms
----- Round 2, with runtime_filter_mode=off -----
q1	4301	4323	4311	4311
q2	331	371	324	324
q3	2227	2818	2464	2464
q4	1429	1905	1406	1406
q5	4392	4353	4301	4301
q6	207	169	124	124
q7	1943	1905	1703	1703
q8	2620	2566	2388	2388
q9	7031	7266	7196	7196
q10	2520	2773	2373	2373
q11	578	476	471	471
q12	687	750	580	580
q13	3633	4017	3173	3173
q14	268	281	257	257
q15	518	485	489	485
q16	602	660	609	609
q17	1101	1229	1343	1229
q18	7625	7218	7171	7171
q19	805	798	767	767
q20	1924	1944	1800	1800
q21	4496	4228	4150	4150
q22	1059	1038	972	972
Total cold run time: 50297 ms
Total hot run time: 48254 ms

doris-robot · 2026-01-19T13:10:22Z

TPC-DS: Total hot run time: 173765 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpcds-tools
TPC-DS sf100 test result on commit 0dbd4cfb060a12c1ae84fe6652a1ebe63bc929e2, data reload: false
query5	5376	632	489	489
query6	338	234	214	214
query7	4217	459	254	254
query8	353	257	247	247
query9	8724	2940	2927	2927
query10	576	369	334	334
query11	15159	15161	14958	14958
query12	181	120	112	112
query13	1262	490	397	397
query14	7783	2989	2794	2794
query14_1	2666	2616	2638	2616
query15	256	197	178	178
query16	1001	487	464	464
query17	1283	666	561	561
query18	2701	432	334	334
query19	265	218	194	194
query20	124	116	114	114
query21	216	135	117	117
query22	3861	4085	3950	3950
query23	16207	15669	15434	15434
query23_1	15586	15609	15328	15328
query24	6797	1560	1147	1147
query24_1	1143	1172	1187	1172
query25	510	409	369	369
query26	1224	267	147	147
query27	2710	438	278	278
query28	4517	2185	2175	2175
query29	731	523	419	419
query30	310	234	202	202
query31	786	629	567	567
query32	82	79	71	71
query33	515	346	304	304
query34	872	890	520	520
query35	729	772	669	669
query36	823	892	828	828
query37	131	103	89	89
query38	2749	2701	2679	2679
query39	778	755	739	739
query39_1	729	716	719	716
query40	222	138	121	121
query41	67	61	60	60
query42	105	101	99	99
query43	435	436	413	413
query44	1324	747	746	746
query45	189	183	179	179
query46	820	937	572	572
query47	1368	1486	1344	1344
query48	330	322	257	257
query49	605	433	334	334
query50	618	276	206	206
query51	3758	3766	3680	3680
query52	108	106	93	93
query53	293	322	268	268
query54	295	265	263	263
query55	85	81	79	79
query56	309	310	304	304
query57	1047	1001	967	967
query58	280	267	273	267
query59	2130	2160	2051	2051
query60	344	335	311	311
query61	148	148	149	148
query62	395	360	316	316
query63	307	277	265	265
query64	4839	1238	926	926
query65	3822	3746	3612	3612
query66	1388	423	314	314
query67	15483	15567	15405	15405
query68	2474	1101	765	765
query69	443	356	330	330
query70	1014	932	979	932
query71	318	308	296	296
query72	5348	3330	3407	3330
query73	602	734	322	322
query74	8789	8800	8570	8570
query75	2754	2797	2439	2439
query76	2261	1039	667	667
query77	388	382	310	310
query78	9802	10027	9097	9097
query79	1075	889	582	582
query80	985	552	484	484
query81	524	263	228	228
query82	1313	148	112	112
query83	360	256	238	238
query84	256	114	84	84
query85	932	484	422	422
query86	370	299	286	286
query87	2869	2855	2756	2756
query88	3454	2582	2553	2553
query89	379	348	318	318
query90	1864	165	168	165
query91	167	157	135	135
query92	76	79	74	74
query93	915	908	539	539
query94	583	308	294	294
query95	558	387	316	316
query96	650	502	229	229
query97	2366	2375	2314	2314
query98	207	213	195	195
query99	602	582	497	497
Total cold run time: 249050 ms
Total hot run time: 173765 ms

doris-robot · 2026-01-19T13:15:24Z

ClickBench: Total hot run time: 27.33 s

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/clickbench-tools
ClickBench test result on commit 0dbd4cfb060a12c1ae84fe6652a1ebe63bc929e2, data reload: false
query1	0.05	0.04	0.04
query2	0.10	0.04	0.04
query3	0.26	0.09	0.09
query4	1.61	0.12	0.10
query5	0.28	0.25	0.27
query6	1.15	0.66	0.65
query7	0.03	0.02	0.02
query8	0.06	0.04	0.04
query9	0.55	0.51	0.50
query10	0.55	0.54	0.55
query11	0.14	0.10	0.10
query12	0.14	0.10	0.12
query13	0.59	0.58	0.58
query14	0.94	0.94	0.94
query15	0.78	0.76	0.78
query16	0.40	0.40	0.39
query17	1.00	1.02	1.00
query18	0.22	0.22	0.21
query19	1.96	1.82	1.84
query20	0.02	0.01	0.02
query21	15.44	0.27	0.15
query22	5.38	0.05	0.05
query23	16.02	0.27	0.10
query24	0.97	0.97	0.88
query25	0.10	0.08	0.06
query26	0.13	0.13	0.13
query27	0.08	0.05	0.05
query28	4.85	1.06	0.89
query29	12.51	3.87	3.17
query30	0.28	0.13	0.11
query31	2.82	0.63	0.38
query32	3.24	0.56	0.46
query33	2.94	3.04	3.02
query34	16.07	5.05	4.41
query35	4.42	4.44	4.45
query36	0.65	0.50	0.49
query37	0.11	0.06	0.07
query38	0.07	0.04	0.04
query39	0.04	0.03	0.03
query40	0.18	0.14	0.13
query41	0.09	0.04	0.03
query42	0.04	0.03	0.03
query43	0.04	0.04	0.04
Total cold run time: 97.3 s
Total hot run time: 27.33 s

hello-stephen · 2026-01-19T16:56:50Z

FE Regression Coverage Report

Increment line coverage 59.32% (347/585) 🎉
Increment coverage report
Complete coverage report

dataroaring · 2026-01-20T17:58:37Z

Code review

Found 2 issues:

Per-replica counting instead of per-tablet counting - The TabletSlidingWindowAccessStats.recordTablet() call is placed inside lambdas that execute once per replica, causing tablet access to be counted N times (where N = number of replicas) instead of once per tablet access. For a tablet with 3 replicas, this means 3x overcounting, which will skew the active tablet statistics used by the rebalancer.

doris/fe/fe-core/src/main/java/org/apache/doris/catalog/Tablet.java

Lines 247 to 252 in 0dbd4cf

// for load plan.
publicMultimap<Long, Long> getNormalReplicaBackendPathMap() throwsUserException { 
returngetNormalReplicaBackendPathMapImpl(null, (rep, be) -> { 
TabletSlidingWindowAccessStats.recordTablet(getId()); 
returnrep.getBackendId(); 
 }); 

The same issue exists in CloudTablet:

doris/fe/fe-core/src/main/java/org/apache/doris/cloud/catalog/CloudTablet.java

Lines 67 to 72 in 0dbd4cf

 } 
publicMultimap<Long, Long> getNormalReplicaBackendPathMap(StringbeEndpoint) throwsUserException { 
Multimap<Long, Long> pathMap = super.getNormalReplicaBackendPathMapImpl(beEndpoint, 
 (rep, be) -> { 
TabletSlidingWindowAccessStats.recordTablet(getId()); 

The correct pattern (recording outside the per-replica loop) is shown in getQueryableReplicas():

doris/fe/fe-core/src/main/java/org/apache/doris/catalog/Tablet.java

Lines 264 to 267 in 0dbd4cf

List<Replica> mayMissingVersionReplica = Lists.newArrayListWithCapacity(replicaNum); 
List<Replica> notCatchupReplica = Lists.newArrayListWithCapacity(replicaNum); 
TabletSlidingWindowAccessStats.recordTablet(getId()); 

Division by zero when config < 60 - If active_tablet_sliding_window_time_window_second is configured to a value less than 60 (DEFAULT_BUCKET_SIZE_SECOND), numBuckets will be 0, causing ArithmeticException in getBucketIndex() when computing % numBuckets. The config is mutable at runtime and has no minimum value validation.

doris/fe/fe-core/src/main/java/org/apache/doris/catalog/TabletSlidingWindowAccessStats.java

Lines 294 to 297 in 0dbd4cf

 } 
longnow = System.currentTimeMillis(); 
refreshAggregatesIfNeeded(now); 
returnactiveIdsInWindow.get(); 

The modulo operation that will fail:

doris/fe/fe-core/src/main/java/org/apache/doris/catalog/TabletSlidingWindowAccessStats.java

Lines 182 to 184 in 0dbd4cf

privatefinalAccessStatsShard[] shards = newAccessStatsShard[SHARD_SIZE]; 
// Access counter for monitoring

🤖 Generated with Claude Code

_{- If this code review was useful, please react with 👍. Otherwise, react with 👎.}

deardeng · 2026-02-12T10:18:07Z

run buildall

github-actions · 2026-02-12T10:35:51Z

PR approved by at least one committer and no changes requested.

github-actions · 2026-02-12T10:35:54Z

PR approved by anyone and no changes requested.

hello-stephen · 2026-02-12T11:29:09Z

FE UT Coverage Report

Increment line coverage 35.64% (211/592) 🎉
Increment coverage report
Complete coverage report

hello-stephen · 2026-02-12T15:56:32Z

FE Regression Coverage Report

Increment line coverage 57.77% (342/592) 🎉
Increment coverage report
Complete coverage report

hello-stephen · 2026-02-13T06:30:45Z

run buildall

doris-robot · 2026-02-13T07:06:38Z

TPC-H: Total hot run time: 28674 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpch-tools
Tpch sf100 test result on commit 827736e2d516dff4aab0bf08bb6c9a3757060d4c, data reload: false
------ Round 1 ----------------------------------
============================================
q1	17604	4416	4275	4275
q2	q3	10659	765	513	513
q4	4684	378	256	256
q5	7561	1194	1004	1004
q6	172	173	145	145
q7	795	836	672	672
q8	9294	1450	1299	1299
q9	4916	4710	4668	4668
q10	6831	1869	1645	1645
q11	458	257	246	246
q12	687	571	471	471
q13	17765	4236	3412	3412
q14	230	237	215	215
q15	947	802	809	802
q16	744	724	672	672
q17	721	882	413	413
q18	5964	5351	5195	5195
q19	1219	957	611	611
q20	538	487	387	387
q21	5150	1941	1519	1519
q22	395	331	254	254
Total cold run time: 97334 ms
Total hot run time: 28674 ms
----- Round 2, with runtime_filter_mode=off -----
============================================
q1	4642	4607	4634	4607
q2	q3	1838	2201	1767	1767
q4	880	1188	806	806
q5	4026	4424	4284	4284
q6	190	177	144	144
q7	1816	1689	1554	1554
q8	2598	2741	2565	2565
q9	7583	7448	7481	7448
q10	2621	2843	2426	2426
q11	508	437	413	413
q12	520	595	452	452
q13	4278	4371	3629	3629
q14	282	302	287	287
q15	892	816	820	816
q16	988	803	733	733
q17	1186	1561	1388	1388
q18	7143	6834	6646	6646
q19	924	931	931	931
q20	2156	2204	2076	2076
q21	4138	3576	3387	3387
q22	481	493	426	426
Total cold run time: 49690 ms
Total hot run time: 46785 ms

doris-robot · 2026-02-13T07:18:01Z

TPC-DS: Total hot run time: 184629 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpcds-tools
TPC-DS sf100 test result on commit 827736e2d516dff4aab0bf08bb6c9a3757060d4c, data reload: false
query5	4844	626	519	519
query6	327	224	213	213
query7	4228	466	263	263
query8	361	251	244	244
query9	8748	2735	2752	2735
query10	556	394	359	359
query11	17262	17748	17412	17412
query12	228	141	139	139
query13	1315	487	386	386
query14	7366	3311	3121	3121
query14_1	3080	2851	2869	2851
query15	219	201	191	191
query16	1015	464	455	455
query17	1480	716	604	604
query18	3248	483	360	360
query19	206	207	176	176
query20	134	129	122	122
query21	212	141	116	116
query22	4791	4891	4774	4774
query23	17204	16728	16586	16586
query23_1	16560	16716	16706	16706
query24	7229	1646	1246	1246
query24_1	1221	1226	1250	1226
query25	522	461	393	393
query26	1232	255	151	151
query27	2794	476	284	284
query28	4482	1859	1890	1859
query29	799	564	465	465
query30	320	246	212	212
query31	889	730	668	668
query32	84	79	70	70
query33	540	345	294	294
query34	924	929	583	583
query35	649	684	625	625
query36	1102	1148	1023	1023
query37	136	97	93	93
query38	2932	2891	2899	2891
query39	858	851	820	820
query39_1	801	812	817	812
query40	241	194	136	136
query41	62	61	57	57
query42	101	101	99	99
query43	371	378	346	346
query44 query45	205	187	185	185
query46	876	981	606	606
query47	2127	2155	2035	2035
query48	304	315	226	226
query49	625	466	387	387
query50	677	271	212	212
query51	4182	4273	4214	4214
query52	104	107	97	97
query53	306	343	286	286
query54	307	267	263	263
query55	89	82	83	82
query56	321	310	300	300
query57	1398	1309	1286	1286
query58	286	273	276	273
query59	2607	2648	2536	2536
query60	341	334	322	322
query61	156	145	156	145
query62	645	600	543	543
query63	317	284	280	280
query64	4817	1300	1025	1025
query65 query66	1408	446	356	356
query67	16413	16493	16374	16374
query68 query69	399	309	277	277
query70	898	939	919	919
query71	334	304	283	283
query72	2779	2680	2418	2418
query73	537	552	313	313
query74	9632	9496	9407	9407
query75	2846	2738	2467	2467
query76	2290	1042	676	676
query77	383	377	340	340
query78	11617	11698	11114	11114
query79	1147	845	596	596
query80	1346	622	534	534
query81	565	289	252	252
query82	999	153	114	114
query83	344	259	246	246
query84	255	114	91	91
query85	901	470	440	440
query86	420	331	299	299
query87	3127	3085	2965	2965
query88	3628	2693	2661	2661
query89	433	374	343	343
query90	2015	171	166	166
query91	160	160	147	147
query92	75	75	74	74
query93	922	817	504	504
query94	649	315	302	302
query95	609	402	308	308
query96	652	528	229	229
query97	2481	2486	2404	2404
query98	240	220	214	214
query99	1012	1008	919	919
Total cold run time: 256298 ms
Total hot run time: 184629 ms

hello-stephen · 2026-02-13T09:33:24Z

FE Regression Coverage Report

Increment line coverage 59.29% (351/592) 🎉
Increment coverage report
Complete coverage report

dataroaring

LGTM

…n cloud (apache#59539) 1. Starting from the getBackendId of the replica, implement a sliding window approach (in TabletAccessStats.java) to count read and write operations over the last hour. The accuracy of this count isn't critical, as the aim is to indicate relative activity levels. 2. Display these statistics in the SHOW TABLETS FROM TABLE and SHOW TABLET {tabletId} commands. ``` show tablet 1767773242851\G ***************************[ 1. row ]*************************** ... AccessCount1H | 1107 LastAccessTime | 1767782384995 ... ``` 3. Integrate with the existing balancing strategy: - For each scheduling operation, identify active databases, tables, and partitions from the active tablets. Schedule operations first on the most active databases, tables, and partitions. - When selecting tablets from the source BE, modify the previous random selection to prioritize non-active tablets for scheduling, keeping active tablets as stable as possible on the source.

…n cloud #59539 #57200 #61562 (#61914) pick from #59539 #57200 #61562 ### What problem does this PR solve? Issue Number: close #xxx Related PR: #xxx Problem Summary: ### Release note None ### Check List (For Author) - Test  - [x] Regression test - [ ] Unit Test - [ ] Manual test (add detailed scripts or steps below) - [ ] No need to test or manual test. Explain why: - [ ] This is a refactor/code format and no logic has been changed. - [ ] Previous test can cover this change. - [ ] No code files have been changed. - [ ] Other reason  - Behavior changed: - [x] No. - [ ] Yes.  - Does this need documentation? - [x] No. - [ ] Yes.  ### Check List (For Reviewer who merge this PR) - [ ] Confirm the release note - [ ] Confirm test cases - [ ] Confirm document - [ ] Add branch pick label

…n cloud #59539 #57200 #61562 (#62709) pick from #59539 #57200 #61562 Issue Number: close #xxx Related PR: #xxx Problem Summary: None - Test  - [x] Regression test - [ ] Unit Test - [ ] Manual test (add detailed scripts or steps below) - [ ] No need to test or manual test. Explain why: - [ ] This is a refactor/code format and no logic has been changed. - [ ] Previous test can cover this change. - [ ] No code files have been changed. - [ ] Other reason  - Behavior changed: - [x] No. - [ ] Yes.  - Does this need documentation? - [x] No. - [ ] Yes.  - [ ] Confirm the release note - [ ] Confirm test cases - [ ] Confirm document - [ ] Add branch pick label  ### What problem does this PR solve? Issue Number: close #xxx Related PR: #xxx Problem Summary: ### Release note None ### Check List (For Author) - Test  - [ ] Regression test - [ ] Unit Test - [ ] Manual test (add detailed scripts or steps below) - [ ] No need to test or manual test. Explain why: - [ ] This is a refactor/code format and no logic has been changed. - [ ] Previous test can cover this change. - [ ] No code files have been changed. - [ ] Other reason  - Behavior changed: - [ ] No. - [ ] Yes.  - Does this need documentation? - [ ] No. - [ ] Yes.  ### Check List (For Reviewer who merge this PR) - [ ] Confirm the release note - [ ] Confirm test cases - [ ] Confirm document - [ ] Add branch pick label

deardeng requested review from dataroaring, gavinchou and w41ter as code owners January 4, 2026 11:19

deardeng marked this pull request as draft January 4, 2026 11:20

deardeng force-pushed the active-tablet branch 2 times, most recently from ac383bb to a71331bCompare January 8, 2026 09:58

deardeng marked this pull request as ready for review January 8, 2026 10:01

gavinchou reviewed Jan 9, 2026
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Comment threadfe/fe-core/src/main/java/org/apache/doris/catalog/TabletSlidingWindowAccessStats.java

gavinchou reviewed Jan 9, 2026
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Comment threadfe/fe-core/src/main/java/org/apache/doris/catalog/TabletSlidingWindowAccessStats.java