[improvement](jdbc catalog) Optimize JdbcCatalog case mapping stability #41510

zy-kkk · 2024-09-30T14:36:33Z

What problem does this PR solve?

Issue Number: close #xxx

Related PR: #xxx

Problem Summary:

Cancel the preservation of name mapping by IdentifierMapping, and only use it as the logic of case processing
Save the remote name in ExternalDatabase/ExternalTable object for get
Use fromRemoteXXName to process the remote name and map it to the local. Currently, only JdbcExternalCatalog uses IdentifierMapping for processing in this method, and other Catalogs are not processed. If processing is required, it should be extended by yourself
When lower_case_meta_name is true, the database, table, and column names mapped remotely to local will be checked to see if they are only case-sensitive.
Since Doris's column names are case-insensitive, column names will be checked at any time
When Fe config's lower_case_table_names is 1 or 2, the table names mapped from remote to local will be checked for only case-sensitive.
include/exclude_database_lists The remote name must be used
meta_names_mapping is used to resolve the conflicts mentioned above
If the same remoteName is in include_database_lists and meta_names_mapping, the filtered remoteName will be displayed according to the name mapped by meta_names_mapping
Since IdentifierMapping is no longer used to store the uppercase and lowercase name mapping, ExternalObject itself is used instead, which solves the problem of frequent refresh and small mapping loss
Remove the logic of rebuilding JdbcClient every time refreshCatalog

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

doris-robot · 2024-09-30T14:36:38Z

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zy-kkk · 2024-09-30T14:37:16Z

run buildall

morningman

Add need to add more FE unit test to test all these logics

fe/fe-core/src/main/java/org/apache/doris/datasource/mapping/IdentifierMapping.java

fe/fe-core/src/main/java/org/apache/doris/datasource/mapping/DefaultIdentifierMapping.java

fe/fe-core/src/main/java/org/apache/doris/datasource/jdbc/JdbcExternalCatalog.java

fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalCatalog.java

fe/fe-core/src/main/java/org/apache/doris/datasource/mapping/DefaultIdentifierMapping.java

zy-kkk · 2024-10-07T15:12:43Z

run buildall

zy-kkk · 2024-10-08T03:59:46Z

run buildall

zy-kkk · 2024-10-09T14:13:45Z

run buildall

zy-kkk · 2024-11-04T17:11:05Z

run buildall

fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalCatalog.java

morningman · 2024-11-07T06:42:27Z

fe/fe-core/src/main/java/org/apache/doris/datasource/jdbc/JdbcExternalTable.java

+            String remoteColumnName = jdbcCatalog.getRemoteColumnNames(this.dbName, this.name, column.getName());
+            remoteColumnNames.put(column.getName(), remoteColumnName);
+        }
+        if (!remoteColumnNames.isEmpty()) {


the remoteColumnNames is always not empty

fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalCatalog.java

morningman · 2024-11-21T09:22:46Z

fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalCatalog.java

-                            dbName -> Optional.ofNullable(
-                                    buildDbForInit(dbName, Util.genIdByName(name, dbName), logType, true)),
-                            (key, value, cause) -> value.ifPresent(v -> v.setUnInitialized(invalidCacheInInit)));
+                            ignored -> remoteToLocalPairs.stream().map(Pair::value).collect(Collectors.toList()),


This is not right.
If you do this, the dbnames cache will always be remoteToLocalPairs, even if there are new dbs added.

fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalCatalog.java

morningman · 2024-12-04T16:57:00Z

fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalDatabase.java

    @SerializedName(value = "name")
    protected String name;
+    @SerializedName(value = "remoteName")
+    protected String remoteName;


remoteName maybe null when upgrading from old version. How to handle it?

morningman · 2024-12-04T16:58:10Z

fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalTable.java

    protected long dbId;
    protected boolean objectCreated;
    protected ExternalCatalog catalog;
+    protected ExternalDatabase db;


Should also mark dbName as deprecated?

morningman · 2024-12-04T16:59:05Z

fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalTable.java

    @SerializedName(value = "name")
    protected String name;
+    @SerializedName(value = "remoteName")
+    protected String remoteName;


remoteName maybe null when upgrading from old version. How to handle it?

morningman · 2024-12-04T17:01:50Z

fe/fe-core/src/main/java/org/apache/doris/datasource/jdbc/JdbcExternalCatalog.java

    public boolean tableExist(SessionContext ctx, String dbName, String tblName) {
        makeSureInitialized();
-        return jdbcClient.isTableExist(dbName, tblName);
+        ExternalTable tbl = Objects.requireNonNull(this.getDbNullable(dbName)).getTableNullable(tblName);


How to make sure tbl is always not null?

fe/fe-core/src/main/java/org/apache/doris/datasource/mapping/IdentifierMapping.java

morningman · 2024-12-07T07:12:13Z

fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalDatabase.java

 import com.google.common.collect.Sets;
 import com.google.gson.annotations.SerializedName;
 import com.google.gson.internal.LinkedTreeMap;
+import jdk.internal.joptsimple.internal.Strings;


Wrong import, use guava

morningman · 2024-12-09T19:34:58Z

fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalCatalog.java

                }
+            } catch (RuntimeException e) {
+                // Handle "Found conflicting" exception explicitly
+                if (e.getMessage().contains("Found conflicting")) {


better define "Found conflicting" as a static field.
and use it here and in RuntimeException msg

morningman · 2024-12-09T19:35:12Z

fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalCatalog.java

+                    LOG.error(e.getMessage());
+                    throw e; // Rethrow to let the caller handle this critical issue
+                } else {
+                    LOG.warn("Failed to check db {} exist in remote system, ignore it.", localDbName, e);


Why this can be ignored?
Add comment in code

liutang123 · 2024-12-20T01:57:05Z

Hi, I found a bug witch can be fixed in this pr, can you add a test case like #45521 in ExternalTableNameComparedLowercaseTest?

zy-kkk · 2024-12-23T08:55:12Z

run buildall

zy-kkk · 2024-12-23T09:50:30Z

run buildall

doris-robot · 2024-12-23T10:53:17Z

TPC-H: Total hot run time: 39494 ms

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/tpch-tools
Tpch sf100 test result on commit 8419a4479c2e719e671ff5d09ac3324fe90cafae, data reload: false

------ Round 1 ----------------------------------
q1	17730	7562	7265	7265
q2	2052	181	171	171
q3	10598	1147	1101	1101
q4	10244	689	718	689
q5	7608	2725	2706	2706
q6	254	150	148	148
q7	999	616	607	607
q8	9225	1823	1938	1823
q9	6633	6429	6368	6368
q10	7036	2254	2338	2254
q11	471	262	265	262
q12	435	220	215	215
q13	17812	2891	2959	2891
q14	250	221	210	210
q15	564	516	513	513
q16	670	585	585	585
q17	985	565	611	565
q18	7285	6611	6626	6611
q19	1345	1014	1013	1013
q20	478	183	189	183
q21	4473	3347	3011	3011
q22	381	303	319	303
Total cold run time: 107528 ms
Total hot run time: 39494 ms

----- Round 2, with runtime_filter_mode=off -----
q1	7248	7198	7223	7198
q2	324	232	229	229
q3	2923	2759	2994	2759
q4	2109	1858	1901	1858
q5	5579	5618	5666	5618
q6	223	140	141	140
q7	2250	1811	1817	1811
q8	3394	3487	3489	3487
q9	8882	8912	8933	8912
q10	3578	3564	3514	3514
q11	598	511	521	511
q12	805	589	581	581
q13	11544	3081	3116	3081
q14	302	277	283	277
q15	569	498	499	498
q16	694	644	636	636
q17	1823	1609	1548	1548
q18	7960	7404	7325	7325
q19	1664	1460	1530	1460
q20	2072	1762	1802	1762
q21	5412	5207	5206	5206
q22	687	606	560	560
Total cold run time: 70640 ms
Total hot run time: 58971 ms

doris-robot · 2024-12-23T11:05:21Z

TPC-DS: Total hot run time: 188766 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 8419a4479c2e719e671ff5d09ac3324fe90cafae, data reload: false

query1	986	387	378	378
query2	6519	2495	2399	2399
query3	6706	222	218	218
query4	34256	23367	23223	23223
query5	4398	492	458	458
query6	284	203	193	193
query7	4643	310	318	310
query8	302	242	232	232
query9	9742	2778	2749	2749
query10	477	240	235	235
query11	18154	15068	14975	14975
query12	154	101	100	100
query13	1657	420	410	410
query14	10169	6539	7058	6539
query15	284	172	179	172
query16	8253	382	470	382
query17	1592	565	538	538
query18	2125	299	304	299
query19	362	158	164	158
query20	127	111	112	111
query21	209	104	105	104
query22	4258	4418	4304	4304
query23	33879	33480	33432	33432
query24	11568	2536	2376	2376
query25	706	398	427	398
query26	1815	156	158	156
query27	2880	332	332	332
query28	8109	2487	2487	2487
query29	1040	473	412	412
query30	297	148	151	148
query31	1045	815	858	815
query32	101	55	58	55
query33	799	291	289	289
query34	996	505	512	505
query35	861	730	735	730
query36	1079	927	959	927
query37	298	73	79	73
query38	4289	4279	3973	3973
query39	1472	1433	1430	1430
query40	289	100	100	100
query41	47	45	50	45
query42	116	103	102	102
query43	549	488	486	486
query44	1266	803	806	803
query45	188	160	163	160
query46	1141	742	719	719
query47	1942	1814	1844	1814
query48	421	323	310	310
query49	1290	405	389	389
query50	789	387	390	387
query51	7177	7032	6970	6970
query52	101	92	90	90
query53	258	181	183	181
query54	1313	410	428	410
query55	80	77	81	77
query56	266	232	245	232
query57	1268	1087	1118	1087
query58	242	208	225	208
query59	3167	2919	2924	2919
query60	277	250	248	248
query61	108	109	106	106
query62	894	653	682	653
query63	230	178	187	178
query64	5193	708	628	628
query65	3212	3230	3214	3214
query66	1413	312	301	301
query67	15876	15351	15336	15336
query68	5834	563	565	563
query69	433	256	249	249
query70	1207	1132	1113	1113
query71	436	252	256	252
query72	6414	4076	4134	4076
query73	783	364	374	364
query74	10294	8761	8834	8761
query75	3457	2585	2711	2585
query76	3523	1024	1105	1024
query77	554	283	287	283
query78	10724	9578	9460	9460
query79	2243	604	618	604
query80	748	429	426	426
query81	507	246	233	233
query82	816	118	113	113
query83	170	148	148	148
query84	242	72	68	68
query85	976	348	301	301
query86	460	313	304	304
query87	4421	4333	4299	4299
query88	3947	2252	2219	2219
query89	428	292	298	292
query90	2208	192	187	187
query91	139	103	115	103
query92	64	50	53	50
query93	2052	566	548	548
query94	1036	278	276	276
query95	349	262	246	246
query96	619	292	281	281
query97	2839	2700	2662	2662
query98	217	197	198	197
query99	1569	1331	1301	1301
Total cold run time: 305713 ms
Total hot run time: 188766 ms

doris-robot · 2024-12-23T11:10:49Z

ClickBench: Total hot run time: 31.32 s

machine: 'aliyun_ecs.c7a.8xlarge_32C64G'
scripts: https://github.com/apache/doris/tree/master/tools/clickbench-tools
ClickBench test result on commit 8419a4479c2e719e671ff5d09ac3324fe90cafae, data reload: false

query1	0.04	0.03	0.04
query2	0.08	0.03	0.03
query3	0.24	0.07	0.07
query4	1.61	0.10	0.11
query5	0.44	0.39	0.40
query6	1.14	0.65	0.66
query7	0.02	0.02	0.02
query8	0.04	0.04	0.03
query9	0.56	0.49	0.50
query10	0.54	0.57	0.55
query11	0.15	0.10	0.10
query12	0.13	0.11	0.12
query13	0.60	0.59	0.60
query14	2.74	2.85	2.77
query15	0.87	0.81	0.82
query16	0.39	0.38	0.40
query17	1.04	1.05	1.05
query18	0.23	0.21	0.21
query19	1.82	1.83	1.92
query20	0.02	0.02	0.01
query21	15.36	0.60	0.57
query22	2.77	2.36	1.44
query23	16.82	0.93	0.71
query24	3.70	0.34	1.94
query25	0.15	0.12	0.05
query26	0.58	0.14	0.13
query27	0.04	0.05	0.05
query28	10.19	1.11	1.07
query29	12.56	3.22	3.22
query30	0.25	0.07	0.06
query31	2.85	0.39	0.38
query32	3.24	0.46	0.46
query33	3.03	3.02	3.08
query34	16.97	4.43	4.42
query35	4.47	4.42	4.47
query36	0.68	0.48	0.47
query37	0.10	0.06	0.05
query38	0.04	0.04	0.03
query39	0.04	0.02	0.02
query40	0.17	0.12	0.14
query41	0.08	0.02	0.02
query42	0.04	0.02	0.02
query43	0.03	0.03	0.03
Total cold run time: 106.86 s
Total hot run time: 31.32 s

zy-kkk · 2024-12-24T09:03:50Z

run buildall

…ty (apache#41510) 1. Cancel the preservation of name mapping by IdentifierMapping, and only use it as the logic of case processing 2. Save the remote name in ExternalDatabase/ExternalTable object for get 3. Use fromRemoteXXName to process the remote name and map it to the local. Currently, only JdbcExternalCatalog uses IdentifierMapping for processing in this method, and other Catalogs are not processed. If processing is required, it should be extended by yourself 4. When lower_case_meta_name is true, the database, table, and column names mapped remotely to local will be checked to see if they are only case-sensitive. 5. Since Doris's column names are case-insensitive, column names will be checked at any time 6. When Fe config's lower_case_table_names is 1 or 2, the table names mapped from remote to local will be checked for only case-sensitive. 7. include/exclude_database_lists The remote name must be used 8. meta_names_mapping is used to resolve the conflicts mentioned above 9. If the same remoteName is in include_database_lists and meta_names_mapping, the filtered remoteName will be displayed according to the name mapped by meta_names_mapping 10. Since IdentifierMapping is no longer used to store the uppercase and lowercase name mapping, ExternalObject itself is used instead, which solves the problem of frequent refresh and small mapping loss 11. Remove the logic of rebuilding JdbcClient every time refreshCatalog

…ing stability (#45221) cherry-pick #41510

…ability (#43256) cherry-pick #41510

### What problem does this PR solve? Related PR: #41510 Problem Summary: We should use remote name to get statistics

### What problem does this PR solve? Related PR: #41510 Problem Summary: In this pr#41510, namesCache changed from `LoadingCache<String, List<String>>` to `LoadingCache<String, List<Pair<String, String>>>`, but the `remove` method of this cache did not change, causing the hms event case to fail.

…rom image (#47603) ### What problem does this PR solve? Issue Number: close #xxx Related PR: #41510 Problem Summary: In PR #41510, we added several fields to External Catalog. However, we only handled the upgrade scenario for EditLog but not for Image. This causes Catalogs rebuilt from Image to miss these fields, resulting in NullPointerException during queries. This PR fixes this issue. Specifically: 1. Added null check and initialization for fields in gsonPostProcess 2. Ensured consistent behavior between EditLog replay and Image deserialization 3. Added proper logging for better troubleshooting

…rom image (apache#47603) Issue Number: close #xxx Related PR: apache#41510 Problem Summary: In PR apache#41510, we added several fields to External Catalog. However, we only handled the upgrade scenario for EditLog but not for Image. This causes Catalogs rebuilt from Image to miss these fields, resulting in NullPointerException during queries. This PR fixes this issue. Specifically: 1. Added null check and initialization for fields in gsonPostProcess 2. Ensured consistent behavior between EditLog replay and Image deserialization 3. Added proper logging for better troubleshooting

…rom image (apache#47603) ### What problem does this PR solve? Issue Number: close #xxx Related PR: apache#41510 Problem Summary: In PR apache#41510, we added several fields to External Catalog. However, we only handled the upgrade scenario for EditLog but not for Image. This causes Catalogs rebuilt from Image to miss these fields, resulting in NullPointerException during queries. This PR fixes this issue. Specifically: 1. Added null check and initialization for fields in gsonPostProcess 2. Ensured consistent behavior between EditLog replay and Image deserialization 3. Added proper logging for better troubleshooting

…rror after catalog creation apache#45521" due to apache#41510 has fixed this bug. This reverts commit 9f72b3d534f1b6eb53b5198cd3f0f757e71d35f8.

…rom image (apache#47603) Issue Number: close #xxx Related PR: apache#41510 Problem Summary: In PR apache#41510, we added several fields to External Catalog. However, we only handled the upgrade scenario for EditLog but not for Image. This causes Catalogs rebuilt from Image to miss these fields, resulting in NullPointerException during queries. This PR fixes this issue. Specifically: 1. Added null check and initialization for fields in gsonPostProcess 2. Ensured consistent behavior between EditLog replay and Image deserialization 3. Added proper logging for better troubleshooting

…rom image (apache#47603) ### What problem does this PR solve? Issue Number: close #xxx Related PR: apache#41510 Problem Summary: In PR apache#41510, we added several fields to External Catalog. However, we only handled the upgrade scenario for EditLog but not for Image. This causes Catalogs rebuilt from Image to miss these fields, resulting in NullPointerException during queries. This PR fixes this issue. Specifically: 1. Added null check and initialization for fields in gsonPostProcess 2. Ensured consistent behavior between EditLog replay and Image deserialization 3. Added proper logging for better troubleshooting

…rror after catalog creation apache#45521" due to apache#41510 has fixed this bug. This reverts commit 9f72b3d534f1b6eb53b5198cd3f0f757e71d35f8.

morningman reviewed Oct 1, 2024

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zy-kkk mentioned this pull request Dec 25, 2024

brnahc-3.0:[improvement](jdbc catalog) Optimize JdbcCatalog case mapping stability #45221

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morningman mentioned this pull request Dec 25, 2024

[2.1][improvement](jdbc catalog) Optimize JdbcCatalog case mapping stability #43256

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morningman pushed a commit that referenced this pull request Dec 26, 2024

brnahc-3.0:[improvement](jdbc catalog) Optimize JdbcCatalog case mapp…

4705087

…ing stability (#45221) cherry-pick #41510

morningman added dev/3.0.4-merged and removed dev/3.0.x dev/3.0.x-conflict labels Dec 26, 2024

morningman pushed a commit that referenced this pull request Dec 26, 2024

[2.1][improvement](jdbc catalog) Optimize JdbcCatalog case mapping st…

1396f5a

…ability (#43256) cherry-pick #41510

morningman added dev/2.1.8-merged and removed dev/2.1.x dev/2.1.x-conflict labels Dec 26, 2024

zy-kkk mentioned this pull request Dec 26, 2024

[fix](jdbc catalog) Get statistics using remote name #46040

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morningman pushed a commit that referenced this pull request Dec 27, 2024

[fix](jdbc catalog) Get statistics using remote name (#46040)

2b5c9c0

### What problem does this PR solve? Related PR: #41510 Problem Summary: We should use remote name to get statistics

github-actions bot pushed a commit that referenced this pull request Dec 27, 2024

[fix](jdbc catalog) Get statistics using remote name (#46040)

c836102

### What problem does this PR solve? Related PR: #41510 Problem Summary: We should use remote name to get statistics

This was referenced Jan 2, 2025

[fix](metaCache)fix bug that names cache can not invalidate. #46287

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[fix](metaCache)fix bug that names cache can not invalidate.(#46287) #46349

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liutang123 mentioned this pull request Jan 13, 2025

[fix](multi-catalog) fix table not found error after catalog creation #45521

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zy-kkk mentioned this pull request Feb 7, 2025

[fix](external catalog) Fix missing fields when rebuilding metadata from image #47603

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[improvement](jdbc catalog) Optimize JdbcCatalog case mapping stability #41510

[improvement](jdbc catalog) Optimize JdbcCatalog case mapping stability #41510

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zy-kkk commented Sep 30, 2024 •

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