[Bug] Use Paimon Catalog in StarRocks to access data on OBS report error "UnsupportedSchemeException"

### Search before asking

- [x] I searched in the [issues](https://github.com/apache/paimon/issues) and found nothing similar.

### Paimon version

1.2.0

1.2.0

org.apache.paimon
paimon-bundle
${paimon.version}


lz4-java
org.lz4

org.apache.paimon
paimon-s3
${paimon.version}

org.apache.paimon
paimon-oss
${paimon.version}

### Compute Engine

StarRocks 3.5.16

### Minimal reproduce step

## step1: create paimon catalog:

```sql
CREATE EXTERNAL CATALOG mrs_paimon
PROPERTIES
(
"type" = "paimon",
"paimon.catalog.type"="hive",
"paimon.catalog.warehouse"="obs://hwem-gri-oversea-m241-la-mrs-uat-mex2-oss/bdp/paimon/warehouse",
"hive.metastore.uris"="thrift://[10.205.200.146:9083](http://10.205.200.146:9083/),thrift://[10.205.200.64:9083](http://10.205.200.64:9083/)",
"aws.s3.enable_ssl" = "false",
"aws.s3.enable_path_style_access" = "true",
"aws.s3.endpoint" = "[obs.la-north-2.myhuaweicloud.com](http://obs.la-north-2.myhuaweicloud.com/)",
"aws.s3.access_key" = "xxxx",
"aws.s3.secret_key" = "xxxxxxx"
)

USE mrs_paimon;
SHOW DATABASES FROM mrs_paimon;
```
## 2. issue query report error

query as follows

```sql
SELECT * FROM `mrs_paimon`.`paimon_db`.`my_table` LIMIT 20
```

FE report error to mysql client:
```
Error 1064 (HY000): org.apache.paimon.fs.UnsupportedSchemeException:
Could not find a file io implementation for scheme 'obs' in the classpath.
Hadoop FileSystem also cannot access this path
'obs://hwem-gri-oversea-m241-la-mrs-uat-mex2-oss/bdp/paimon/warehouse'.
```

detail error info in fe.log

```
(starrocks-mysql-nio-pool-176|11849049) [StmtExecutor.execute():975] execute Exception, sql: SELECT * FROM `mrs_paimon`.`paimon_db`.`my_table` LIMIT 20, error: Getting analyzing error. Detail message: Unknown table 'paimon_db.my_table'.
WARN (starrocks-mysql-nio-pool-176|11849049) [StmtExecutor.logOptimizerTraceOnGenerateExecPlanFailure():697] Generate exec plan failed. Planner profile: query_id=c2661632-4d18-11f1-ad90-fa163e2e29f1, sql=SELECT * FROM `mrs_paimon`.`paimon_db`.`my_table` LIMIT 20, err=SemanticException: Getting analyzing error. Detail message: Unknown table 'paimon_db.my_table'., profile=Planner:
- -- Parser[1] 0
- -- Total[1] 35ms
- -- Analyzer[1] 35ms
- -- Lock[1] 0
- -- AnalyzeDatabase[1] 0
- -- AnalyzeTemporaryTable[1] 0
- -- AnalyzeTable[1] 35ms
Reason:
```

## 3. desc paimon table also report error

```
SHOW CATALOGS;

SHOW CREATE CATALOG mrs_paimon;

SET CATALOG mrs_paimon;

SHOW DATABASES;

USE paimon_db;

desc my_table;
```

```
2026-05-12 14:49:25.861+08:00 WARN (starrocks-mysql-nio-pool-1|171)
[StmtExecutor.logOptimizerTraceOnGenerateExecPlanFailure():697] Generate exec plan

Planner profile:
query_id=b73fcf55-4dce-11f1-a1d0-fa163e2e29fa, sql=desc my_table,
err=SemanticException: Getting analyzing error.

Detail message:
Unknown node path: /catalog/mrs_paimon/paimon_db/my_table/schema.
msg: table : my_table not exists., profile=Planner:

--- Parser[1] 1ms
--- Total[1] 37ms

Reason:

2026-05-12 14:49:25.860+08:00 ERROR (starrocks-mysql-nio-pool-1|171)
[PaimonMetadata.getTable():243] Paimon table paimon_db.my_table does not exist.

org.apache.paimon.Catalog$TableNotExistException: Table paimon_db.my_table does not exist.

at org.apache.paimon.hive.HiveCatalog.lambda$loadTableSchema$18(HiveCatalog.java:709)
at java.util.Optional.orElseThrow(Optional.java:403)
at org.apache.paimon.hive.HiveCatalog.loadTableSchema(HiveCatalog.java:709)
at org.apache.paimon.hive.HiveCatalog.loadTableMetadata(HiveCatalog.java:692)
at org.apache.paimon.hive.HiveCatalog.loadTableMetadata(HiveCatalog.java:686)
at org.apache.paimon.catalog.CatalogUtils.loadTable(CatalogUtils.java:200)
at org.apache.paimon.catalog.AbstractCatalog.getTable(AbstractCatalog.java:460)
at org.apache.paimon.catalog.CachingCatalog.getTable(CachingCatalog.java:242)

at com.starrocks.connector.paimon.PaimonMetadata.getTable(PaimonMetadata.java:241)
at com.starrocks.connector.CatalogConnectorMetadata.getTable(CatalogConnectorMetadata.java:148)
at com.starrocks.server.MetadataMgr.lambda$getTables$5(MetadataMgr.java:507)
at java.util.Optional.map(Optional.java:260)
at com.starrocks.server.MetadataMgr.getTable(MetadataMgr.java:507)
at com.starrocks.common.proc.ExternalTablesProcDir.lookup(ExternalTablesProcDir.java:60)
at com.starrocks.common.proc.ProcService.open(ProcService.java:112)
at com.starrocks.sql.analyzer.ShowStmtAnalyzer$ShowStmtAnalyzerVisitor.descExternalCatalogTable(ShowStmtAnalyzer.java:549)
at com.starrocks.sql.analyzer.ShowStmtAnalyzer$ShowStmtAnalyzerVisitor.visitDescTableStmt(ShowStmtAnalyzer.java:368)
at com.starrocks.sql.analyzer.ShowStmtAnalyzer$ShowStmtAnalyzerVisitor.visitDescTableStmt(ShowStmtAnalyzer.java:108)
at com.starrocks.sql.ast.DescribeStmt.accept(DescribeStmt.java:210)
at com.starrocks.sql.ast.AstVisitor.visit(AstVisitor.java:102)
at com.starrocks.sql.analyzer.ShowStmtAnalyzer$ShowStmtAnalyzerVisitor.analyze(ShowStmtAnalyzer.java:114)
at com.starrocks.sql.analyzer.ShowStmtAnalyzer.analyze(ShowStmtAnalyzer.java:105)
at com.starrocks.sql.analyzer.Analyzer$AnalyzerVisitor.visitShowStatement(Analyzer.java:432)
at com.starrocks.sql.analyzer.Analyzer$AnalyzerVisitor.visitDescTableStmt(Analyzer.java:190)
at com.starrocks.sql.ast.AstVisitor.visitDescTableStmt(AstVisitor.java:244)
at com.starrocks.sql.ast.DescribeStmt.accept(DescribeStmt.java:210)
at com.starrocks.sql.ast.AstVisitor.visit(AstVisitor.java:102)
at com.starrocks.sql.analyzer.Analyzer.analyze(Analyzer.java:187)
at com.starrocks.qe.StmtExecutor.generateExecPlan(StmtExecutor.java:612)
at com.starrocks.qe.StmtExecutor.execute(StmtExecutor.java:757)
at com.starrocks.qe.ConnectProcessor.executeQueryStatement(ConnectProcessor.java:547)
at com.starrocks.qe.ConnectProcessor.runWithParserStageRetry(ConnectProcessor.java:435)
at com.starrocks.qe.ConnectProcessor.handleQuery(ConnectProcessor.java:372)
at com.starrocks.qe.ConnectProcessor.dispatch(ConnectProcessor.java:758)
at com.starrocks.qe.ConnectProcessor.processOnce(ConnectProcessor.java:1148)
at com.starrocks.mysql.nio.ReadListener.lambda$handleEvent$0(ReadListener.java:71)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
...
```
## step4: Transform obs path into s3 path in catalog ddl, it also does not work.

```
CREATE EXTERNAL CATALOG mrs_paimon
PROPERTIES
(
"type" = "paimon",
"paimon.catalog.type" = "hive",
"paimon.catalog.warehouse" = "s3://hwem-gri-oversea-m241-la-mrs-uat-mex2-oss/bdp/paimon/warehouse",
"hive.metastore.uris" = "thrift://[10.205.200.146:9083](http://10.205.200.146:9083/),thrift://[10.205.200.64:9083](http://10.205.200.64:9083/)",

"aws.s3.enable_ssl" = "true",
"aws.s3.enable_path_style_access" = "true",
"aws.s3.endpoint" = "https://obs.la-north-2.myhuaweicloud.com/",
"aws.s3.region" = "la-north-2",
"aws.s3.access_key" = "xxxx",
"aws.s3.secret_key" = "xxxxxxx"
);

CREATE EXTERNAL CATALOG mrs_paimon
PROPERTIES
(
"type" = "paimon",
"paimon.catalog.type" = "hive",
"hive.metastore.uris" = "thrift://[10.205.200.146:9083](http://10.205.200.146:9083/),thrift://[10.205.200.64:9083](http://10.205.200.64:9083/)",
"paimon.catalog.warehouse" = "s3a://hwem-gri-oversea-m241-la-mrs-uat-mex2-oss/bdp/paimon/warehouse",
"aws.s3.enable_ssl" = "true",
"aws.s3.enable_path_style_access" = "true",
"aws.s3.endpoint" = "[obs.la-north-2.myhuaweicloud.com](http://obs.la-north-2.myhuaweicloud.com/)",
"aws.s3.access_key" = "xxx",
"aws.s3.secret_key" = "xxx"
);
```

## step5: copy paimon-obs-1.2.0.jar into starrocks FE according to community experiences, it also does not work. error as follows

```
2026-05-13 10:50:52.341+08:00 WARN (starrocks-mysql-nio-pool-2|708) [StmtExecutor.execute():998] execute Exception, sql: SHOW DATABASES FROM `mrs_paimon`
java.lang.NoClassDefFoundError: Could not initialize class okhttp3.internal.concurrent.TaskRunner
at okhttp3.ConnectionPool.(ConnectionPool.kt:41) ~[okhttp-4.10.0.jar:?]
at okhttp3.ConnectionPool.(ConnectionPool.kt:47) ~[okhttp-4.10.0.jar:?]
at okhttp3.OkHttpClient$Builder.(OkHttpClient.kt:471) ~[okhttp-4.10.0.jar:?]
at com.obs.services.internal.utils.RestUtils.initHttpClientBuilder(RestUtils.java:333) ~[?:?]
at com.obs.services.internal.RestStorageService.initHttpClient(RestStorageService.java:177) ~[?:?]
at com.obs.services.ObsClient.init(ObsClient.java:108) ~[?:?]
at com.obs.services.ObsClient.(ObsClient.java:233) ~[?:?]
at org.apache.hadoop.fs.obs.DefaultOBSClientFactory.createObsClientWithoutCredentialsProvider(DefaultOBSClientFactory.java:289) ~[?:?]
at org.apache.hadoop.fs.obs.DefaultOBSClientFactory.createHuaweiObsClient(DefaultOBSClientFactory.java:240) ~[?:?]
at org.apache.hadoop.fs.obs.DefaultOBSClientFactory.createObsClient(DefaultOBSClientFactory.java:359) ~[?:?]
at org.apache.hadoop.fs.obs.OBSFileSystem.initialize(OBSFileSystem.java:286) ~[?:?]
at org.apache.paimon.obs.OBSFileIO.lambda$createFileSystem$0(OBSFileIO.java:133) ~[?:?]
at org.apache.paimon.obs.OBSFileIO.lambda$createFileSystem$1(OBSFileIO.java:141) ~[?:?]
at java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708) ~[?:?]
at org.apache.paimon.obs.OBSFileIO.createFileSystem(OBSFileIO.java:140) ~[?:?]
at org.apache.paimon.obs.HadoopCompliantFileIO.getFileSystem(HadoopCompliantFileIO.java:113) ~[?:?]
at org.apache.paimon.obs.HadoopCompliantFileIO.exists(HadoopCompliantFileIO.java:83) ~[?:?]
at org.apache.paimon.fs.PluginFileIO.lambda$exists$4(PluginFileIO.java:67) ~[paimon-bundle-1.2.0-cve-patched.jar:?]
at org.apache.paimon.fs.PluginFileIO.wrap(PluginFileIO.java:104) ~[paimon-bundle-1.2.0-cve-patched.jar:?]
at org.apache.paimon.fs.PluginFileIO.exists(PluginFileIO.java:67) ~[paimon-bundle-1.2.0-cve-patched.jar:?]
at org.apache.paimon.fs.FileIO.checkOrMkdirs(FileIO.java:285) ~[paimon-bundle-1.2.0-cve-patched.jar:?]
at org.apache.paimon.hive.HiveCatalog.createHiveCatalog(HiveCatalog.java:1686) ~[paimon-bundle-1.2.0-cve-patched.jar:?]
at org.apache.paimon.hive.HiveCatalogFactory.create(HiveCatalogFactory.java:37) ~[paimon-bundle-1.2.0-cve-patched.jar:?]
at org.apache.paimon.catalog.CatalogFactory.createUnwrappedCatalog(CatalogFactory.java:84) ~[paimon-bundle-1.2.0-cve-patched.jar:?]
at org.apache.paimon.catalog.CatalogFactory.createCatalog(CatalogFactory.java:71) ~[paimon-bundle-1.2.0-cve-patched.jar:?]
at org.apache.paimon.catalog.CatalogFactory.createCatalog(CatalogFactory.java:67) ~[paimon-bundle-1.2.0-cve-patched.jar:?]
at com.starrocks.connector.paimon.PaimonConnector.getPaimonNativeCatalog(PaimonConnector.java:152) ~[starrocks-fe.jar:?]
at com.starrocks.connector.paimon.PaimonConnector.getMetadata(PaimonConnector.java:161) ~[starrocks-fe.jar:?]
at com.starrocks.connector.LazyConnector.getMetadata(LazyConnector.java:42) ~[starrocks-fe.jar:?]
at com.starrocks.connector.CatalogConnector.getMetadata(CatalogConnector.java:45) ~[starrocks-fe.jar:?]
at com.starrocks.server.MetadataMgr$QueryMetadatas.getConnectorMetadata(MetadataMgr.java:119) ~[starrocks-fe.jar:?]
at com.starrocks.server.MetadataMgr.getOptionalMetadata(MetadataMgr.java:204) ~[starrocks-fe.jar:?]
at com.starrocks.server.MetadataMgr.getOptionalMetadata(MetadataMgr.java:181) ~[starrocks-fe.jar:?]
at com.starrocks.server.MetadataMgr.listDbNames(MetadataMgr.java:223) ~[starrocks-fe.jar:?]
at com.starrocks.qe.ShowExecutor$ShowExecutorVisitor.visitShowDatabasesStatement(ShowExecutor.java:465) ~[starrocks-fe.jar:?]
at com.starrocks.qe.ShowExecutor$ShowExecutorVisitor.visitShowDatabasesStatement(ShowExecutor.java:321) ~[starrocks-fe.jar:?]
at com.starrocks.sql.ast.ShowDbStmt.accept(ShowDbStmt.java:99) ~[starrocks-fe.jar:?]
at com.starrocks.sql.ast.AstVisitor.visit(AstVisitor.java:102) ~[starrocks-fe.jar:?]
at com.starrocks.qe.ShowExecutor.execute(ShowExecutor.java:318) ~[starrocks-fe.jar:?]
at com.starrocks.qe.StmtExecutor.handleShow(StmtExecutor.java:2233) ~[starrocks-fe.jar:?]
at com.starrocks.qe.StmtExecutor.execute(StmtExecutor.java:905) ~[starrocks-fe.jar:?]
at com.starrocks.qe.ConnectProcessor.executeQueryAttempt(ConnectProcessor.java:547) ~[starrocks-fe.jar:?]
at com.starrocks.qe.ConnectProcessor.runWithParserStageRetry(ConnectProcessor.java:435) ~[starrocks-fe.jar:?]
at com.starrocks.qe.ConnectProcessor.handleQuery(ConnectProcessor.java:372) ~[starrocks-fe.jar:?]
at com.starrocks.qe.ConnectProcessor.dispatch(ConnectProcessor.java:758) ~[starrocks-fe.jar:?]
at com.starrocks.qe.ConnectProcessor.processOnce(ConnectProcessor.java:1148) ~[starrocks-fe.jar:?]
at com.starrocks.mysql.nio.ReadListener.lambda$handleEvent$0(ReadListener.java:71) ~[starrocks-fe.jar:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
at java.lang.Thread.run(Thread.java:840) ~[?:?]
Caused by: java.lang.ExceptionInInitializerError: Exception java.lang.NoSuchFieldError: Companion [in thread "starrocks-mysql-nio-pool-2"]
at okhttp3.internal.Util.(Util.kt:70) ~[okhttp-4.10.0.jar:?]
at okhttp3.internal.concurrent.TaskRunner.(TaskRunner.kt:309) ~[okhttp-4.10.0.jar:?]
... 50 more
```

### What doesn't meet your expectations?

Paimon catalog StarRocks can access paimon data on OBS.

### Anything else?

Use access OBS via Parallel Filesystem instead of object storage, is it the root cause?

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

Start with the OBS file I/O path shown in the stack trace, including org.apache.paimon.obs.OBSFileIO, HadoopCompliantFileIO, HiveCatalog, and StarRocks' PaimonConnector. Reproduce the failure with SHOW DATABASES or a table query using the OBS warehouse, then verify that the catalog can access the path without UnsupportedSchemeException or dependency initialization errors.

Written by the indexing model from the issue text.