branch-3.1: [fix](reader) Fix tracing file reader nullptr issue in push handler. #55346

[kaka11chen]

Cherry-pick #55346

[hello-stephen]

Thank you for your contribution to Apache Doris.
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Please clearly describe your PR:

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

[kaka11chen]

run buildall

[doris-robot]

TPC-H: Total hot run time: 32366 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpch-tools
Tpch sf100 test result on commit 83207bec934b35d66522ff3d9535ed8ef3ed340a, data reload: false

------ Round 1 ----------------------------------
q1	17587	5444	5401	5401
q2	2035	403	285	285
q3	11949	1218	740	740
q4	10326	856	460	460
q5	9453	2348	2086	2086
q6	185	161	128	128
q7	893	748	605	605
q8	9349	1377	1076	1076
q9	5238	4906	4796	4796
q10	6719	2256	1835	1835
q11	459	272	264	264
q12	319	346	203	203
q13	17768	3566	2988	2988
q14	226	234	211	211
q15	538	471	458	458
q16	412	424	367	367
q17	583	849	382	382
q18	6818	6501	6310	6310
q19	1206	953	561	561
q20	339	361	216	216
q21	3023	2202	1980	1980
q22	1057	1057	1014	1014
Total cold run time: 106482 ms
Total hot run time: 32366 ms

----- Round 2, with runtime_filter_mode=off -----
q1	5548	5501	5386	5386
q2	233	338	239	239
q3	2265	2689	2373	2373
q4	1421	1829	1423	1423
q5	4459	5060	5022	5022
q6	174	170	131	131
q7	2089	2008	1872	1872
q8	2748	2840	2690	2690
q9	7351	7274	7177	7177
q10	3025	3351	2711	2711
q11	583	509	491	491
q12	664	762	584	584
q13	3379	3785	3149	3149
q14	274	316	260	260
q15	522	476	467	467
q16	417	492	434	434
q17	1209	1729	1240	1240
q18	7622	7677	7300	7300
q19	744	1089	1095	1089
q20	1987	2039	1888	1888
q21	5242	4782	4521	4521
q22	1101	1062	1011	1011
Total cold run time: 53057 ms
Total hot run time: 51458 ms

[doris-robot]

TPC-DS: Total hot run time: 191756 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 83207bec934b35d66522ff3d9535ed8ef3ed340a, data reload: false

query1	951	379	402	379
query2	6206	1935	1896	1896
query3	8691	198	191	191
query4	33626	24101	23221	23221
query5	3616	597	449	449
query6	298	200	173	173
query7	4204	486	318	318
query8	298	234	236	234
query9	9480	2615	2608	2608
query10	481	319	262	262
query11	18214	15318	15233	15233
query12	158	107	104	104
query13	1561	530	430	430
query14	9556	6562	6646	6562
query15	231	191	180	180
query16	8075	616	507	507
query17	1556	758	630	630
query18	2175	429	332	332
query19	207	196	166	166
query20	126	120	121	120
query21	205	129	117	117
query22	4685	4686	4380	4380
query23	35138	34704	34102	34102
query24	7321	2704	2700	2700
query25	519	486	438	438
query26	812	271	172	172
query27	2295	464	369	369
query28	5734	2229	2211	2211
query29	602	585	470	470
query30	240	189	160	160
query31	1023	919	852	852
query32	98	64	61	61
query33	502	403	308	308
query34	759	863	536	536
query35	786	806	727	727
query36	1000	1069	960	960
query37	103	90	69	69
query38	4025	4071	4014	4014
query39	1523	1635	1483	1483
query40	209	114	103	103
query41	51	53	47	47
query42	119	102	105	102
query43	519	533	484	484
query44	1358	836	825	825
query45	188	177	168	168
query46	870	1053	675	675
query47	2007	2031	1956	1956
query48	411	441	366	366
query49	734	498	409	409
query50	674	693	433	433
query51	7213	7294	7383	7294
query52	107	101	94	94
query53	234	264	197	197
query54	540	550	468	468
query55	84	77	78	77
query56	274	285	255	255
query57	1286	1276	1224	1224
query58	239	218	218	218
query59	3114	3209	3043	3043
query60	286	278	272	272
query61	109	106	110	106
query62	803	764	701	701
query63	232	195	203	195
query64	4116	1022	682	682
query65	3424	3292	3340	3292
query66	792	403	306	306
query67	16300	15829	15608	15608
query68	7886	797	534	534
query69	492	297	272	272
query70	1155	1076	1115	1076
query71	387	298	261	261
query72	5750	3738	3784	3738
query73	642	739	357	357
query74	10193	9263	8916	8916
query75	3219	3171	2645	2645
query76	3149	1173	764	764
query77	553	355	278	278
query78	10238	10505	9716	9716
query79	3541	903	589	589
query80	680	522	429	429
query81	506	265	215	215
query82	584	115	87	87
query83	158	157	149	149
query84	263	101	84	84
query85	778	375	292	292
query86	395	309	292	292
query87	4346	4275	4248	4248
query88	5155	2404	2398	2398
query89	413	331	304	304
query90	1774	192	189	189
query91	137	137	110	110
query92	70	54	53	53
query93	2111	884	543	543
query94	682	427	294	294
query95	353	287	274	274
query96	485	612	292	292
query97	3207	3297	3157	3157
query98	232	210	192	192
query99	1527	1459	1284	1284
Total cold run time: 294434 ms
Total hot run time: 191756 ms

[doris-robot]

ClickBench: Total hot run time: 28.27 s

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/clickbench-tools
ClickBench test result on commit 83207bec934b35d66522ff3d9535ed8ef3ed340a, data reload: false

query1	0.03	0.04	0.03
query2	0.06	0.03	0.03
query3	0.24	0.07	0.07
query4	1.63	0.11	0.10
query5	0.51	0.50	0.52
query6	1.13	0.72	0.74
query7	0.02	0.01	0.01
query8	0.05	0.04	0.03
query9	0.57	0.50	0.50
query10	0.57	0.54	0.55
query11	0.14	0.11	0.11
query12	0.14	0.11	0.10
query13	0.62	0.59	0.59
query14	0.78	0.80	0.81
query15	0.84	0.83	0.81
query16	0.37	0.40	0.38
query17	1.05	0.98	1.04
query18	0.25	0.22	0.23
query19	1.94	1.82	1.85
query20	0.02	0.01	0.01
query21	15.40	0.89	0.60
query22	0.74	0.69	0.58
query23	15.28	1.48	0.53
query24	3.73	0.38	0.56
query25	0.17	0.14	0.12
query26	0.36	0.14	0.14
query27	0.06	0.05	0.05
query28	13.21	1.04	0.44
query29	12.58	3.98	3.25
query30	0.25	0.09	0.06
query31	2.83	0.60	0.38
query32	3.22	0.53	0.46
query33	3.04	3.00	3.03
query34	16.59	5.13	4.57
query35	4.63	4.57	4.57
query36	0.64	0.50	0.48
query37	0.09	0.06	0.06
query38	0.04	0.04	0.03
query39	0.03	0.02	0.03
query40	0.17	0.14	0.13
query41	0.08	0.02	0.02
query42	0.04	0.02	0.02
query43	0.04	0.03	0.03
Total cold run time: 104.18 s
Total hot run time: 28.27 s