S3 path issue - Name or service not known

### Describe the bug

I'm developing data-streaming-pipeline and have a Kafka (v3.9.0), Flink (v1.20.1), Iceberg (v1.8.1) on MinIO based data streaming pipeline all deployed on-prem on Kubernetes cluster.

For last several weeks, I've been working to establish Iceberg REST based "Apache Polaris" catalog: 1.0.x incubating.

First I deploy all my containers (including Polaris) which are running fine. Then I add a new catalog using Polaris REST API using curl command. Then, in Flink-SQL, I create a new catalog (kind of alias to the one created using curl command), database successfully. Finally I try to create an iceberg table which ends up with error.

I took care of setting required properties to ensure **S3 path style access** is set to **true** for my on-prem MinIO storage. I'll drop/attach k8s manifest files here for MinIO and Polaris YAML (you'll see I've been experimenting with a lot of env variables!).

Then I'll add the Polaris curl command to add the catalog and flink-sql commands in "To Reproduce" section, and finally put the error details/logs in the "Actual Behavior" section.

I tried a lot of things consistently for weeks with no luck at all. Please provide your feedback and let me know how to get this resolved. Thanks much.

_By the way, before trying Polaris, I had been using simple HadoopCatalog and everything was working just fine._

[polaris-catalog.yaml](https://github.com/user-attachments/files/21861873/polaris-catalog.yaml)
[minio-data-lake.yaml](https://github.com/user-attachments/files/21861872/minio-data-lake.yaml)

### To Reproduce

**Add a Polaris catalog using REST API method via curl command as below:**

`curl -i -X POST -H "Authorization: Bearer $Access_Token" "http://polaris-service.my-ns.svc.cluster.local:8181/api/management/v1/catalogs" \
-H "Content-Type: application/json" \
-d '{
"catalog": {
"name": "my_iceberg_polaris_catalog",
"type": "INTERNAL",
"properties": {
"default-base-location": "s3://iceberg-bucket",
"s3.endpoint": "http://minio-data-lake-service.my-ns.svc.cluster.local:9000",
"s3.path-style-access": "true",
"s3.access-key-id": "polaris-service-user",
"s3.secret-access-key": "Passw0rd1",
"s3.region": "auto"
},
"storageConfigInfo": {
"roleArn": "arn:aws:iam::000000000000:role/minio-polaris-role",
"region": "auto",
"storageType": "S3",
"endpoint":"http://minio-data-lake-service.my-ns.svc.cluster.local:9000",
"pathStyleAccess":"true",
"allowedLocations": [
"s3://iceberg-bucket/*"
]
}
}
}'`

And below are flink-sql commands. All gets executed successfully except for the last one (CREATE TABLE one).

`CREATE CATALOG IF NOT EXISTS my_iceberg_polaris_catalog WITH (
'type'='iceberg',
'catalog-type'='rest',
'uri'='http://polaris-service.my-ns.svc.cluster.local:8181/api/catalog',
'credential'='root:s3cr3t',
'rest.credential-vending.enabled'='true',
'warehouse'='my_iceberg_polaris_catalog',
's3.region'='auto',
's3.endpoint'='http://minio-data-lake-service.my-ns.svc.cluster.local:9000',
's3.path-style-access'='true',
's3.access-key-id'='polaris-service-user',
's3.secret-access-key'='Passw0rd1',
'token-refresh-enabled'='true',
'scope'='PRINCIPAL_ROLE:ALL'
);

USE CATALOG my_iceberg_polaris_catalog;

CREATE DATABASE IF NOT EXISTS my_iceberg_db;

USE my_iceberg_db;

CREATE TABLE IF NOT EXISTS i_t_obk_cdc_topic_ciprod_CMMSDATA_MM_MAINTENANCE_ACTION_LABOR_tagged
(
...
)
PARTITIONED BY (`col1`)
WITH
(
'format-version'='2',
'write.format.default'='parquet',
'write.upsert.enabled'='true',
'write.merge.mode'='merge-on-read',
'write.equality-delete-field'='',
'write.distribution-mode'='hash',
'write.iceberg.hash-distribution.column'='',
'write.target-file-size-bytes'='1048576'
);`

### Actual Behavior

Error below from flink-sql terminal:

**_`org.apache.flink.table.api.TableException: Could not execute CreateTable in path `my_iceberg_polaris_catalog`.`my_iceberg_db`.`iceberg_table_1`_**
at org.apache.flink.table.catalog.CatalogManager.execute(CatalogManager.java:1375) ~[flink-table-api-java-uber-1.20.1.jar:1.20.1]
at org.apache.flink.table.catalog.CatalogManager.createTable(CatalogManager.java:1005) ~[flink-table-api-java-uber-1.20.1.jar:1.20.1]
at org.apache.flink.table.operations.ddl.CreateTableOperation.execute(CreateTableOperation.java:86) ~[flink-table-api-java-uber-1.20.1.jar:1.20.1]
at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:1102) ~[flink-table-api-java-uber-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.operation.OperationExecutor.callOperation(OperationExecutor.java:687) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.operation.OperationExecutor.executeOperation(OperationExecutor.java:522) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.operation.OperationExecutor.executeStatement(OperationExecutor.java:243) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.operation.OperationExecutor.executeStatement(OperationExecutor.java:199) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.SqlGatewayServiceImpl.lambda$executeStatement$1(SqlGatewayServiceImpl.java:214) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.operation.OperationManager.lambda$submitOperation$1(OperationManager.java:119) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.operation.OperationManager$Operation.lambda$run$0(OperationManager.java:258) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:?]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:?]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:?]
at java.lang.Thread.run(Unknown Source) [?:?]
**_Caused by: org.apache.iceberg.exceptions.ServiceFailureException: Server error: SdkClientException: Received an UnknownHostException when attempting to interact with a service. See cause for the exact endpoint that is failing to resolve. If this is happening on an endpoint that previously worked, there may be a network connectivity issue or your DNS cache could be storing endpoints for too long._**
at org.apache.iceberg.rest.ErrorHandlers$DefaultErrorHandler.accept(ErrorHandlers.java:217) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.rest.ErrorHandlers$TableErrorHandler.accept(ErrorHandlers.java:118) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.rest.ErrorHandlers$TableErrorHandler.accept(ErrorHandlers.java:102) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.rest.HTTPClient.throwFailure(HTTPClient.java:224) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.rest.HTTPClient.execute(HTTPClient.java:308) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.rest.BaseHTTPClient.post(BaseHTTPClient.java:88) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.rest.RESTClient.post(RESTClient.java:113) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.rest.RESTSessionCatalog$Builder.create(RESTSessionCatalog.java:848) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.CachingCatalog$CachingTableBuilder.lambda$create$0(CachingCatalog.java:264) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.shaded.com.github.benmanes.caffeine.cache.BoundedLocalCache.lambda$doComputeIfAbsent$14(BoundedLocalCache.java:2406) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at java.util.concurrent.ConcurrentHashMap.compute(Unknown Source) ~[?:?]
at org.apache.iceberg.shaded.com.github.benmanes.caffeine.cache.BoundedLocalCache.doComputeIfAbsent(BoundedLocalCache.java:2404) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.shaded.com.github.benmanes.caffeine.cache.BoundedLocalCache.computeIfAbsent(BoundedLocalCache.java:2387) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.shaded.com.github.benmanes.caffeine.cache.LocalCache.computeIfAbsent(LocalCache.java:108) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.shaded.com.github.benmanes.caffeine.cache.LocalManualCache.get(LocalManualCache.java:62) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.CachingCatalog$CachingTableBuilder.create(CachingCatalog.java:260) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.catalog.Catalog.createTable(Catalog.java:75) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.flink.FlinkCatalog.createIcebergTable(FlinkCatalog.java:415) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.iceberg.flink.FlinkCatalog.createTable(FlinkCatalog.java:395) ~[iceberg-flink-runtime-1.20-1.8.1.jar:?]
at org.apache.flink.table.catalog.CatalogManager.lambda$createTable$18(CatalogManager.java:1016) ~[flink-table-api-java-uber-1.20.1.jar:1.20.1]
at org.apache.flink.table.catalog.CatalogManager.execute(CatalogManager.java:1369) ~[flink-table-api-java-uber-1.20.1.jar:1.20.1]
... 17 more
17:41:51.335 [flink-rest-server-netty-worker-thread-1] ERROR org.apache.flink.table.gateway.service.SqlGatewayServiceImpl - Failed to fetchResults.
org.apache.flink.table.gateway.service.utils.SqlExecutionException: Failed to execute the operation d12e4ce3-6997-4e6c-99bb-2467b49802fd.
at org.apache.flink.table.gateway.service.operation.OperationManager$Operation.processThrowable(OperationManager.java:414) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.operation.OperationManager$Operation.lambda$run$0(OperationManager.java:267) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:?]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:?]
at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:?]
at java.lang.Thread.run(Unknown Source) [?:?]
Caused by: org.apache.flink.table.api.TableException: Could not execute CreateTable in path `my_iceberg_polaris_catalog`.`my_iceberg_db`.`iceberg_table_1`
at org.apache.flink.table.catalog.CatalogManager.execute(CatalogManager.java:1375) ~[flink-table-api-java-uber-1.20.1.jar:1.20.1]
at org.apache.flink.table.catalog.CatalogManager.createTable(CatalogManager.java:1005) ~[flink-table-api-java-uber-1.20.1.jar:1.20.1]
at org.apache.flink.table.operations.ddl.CreateTableOperation.execute(CreateTableOperation.java:86) ~[flink-table-api-java-uber-1.20.1.jar:1.20.1]
at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:1102) ~[flink-table-api-java-uber-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.operation.OperationExecutor.callOperation(OperationExecutor.java:687) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.operation.OperationExecutor.executeOperation(OperationExecutor.java:522) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.operation.OperationExecutor.executeStatement(OperationExecutor.java:243) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.operation.OperationExecutor.executeStatement(OperationExecutor.java:199) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.SqlGatewayServiceImpl.lambda$executeStatement$1(SqlGatewayServiceImpl.java:214) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
at org.apache.flink.table.gateway.service.operation.OperationManager.lambda$submitOperation$1(OperationManager.java:119) ~[flink-sql-gateway-1.20.1.jar:1.20.1]
...

===============

**And below error log from Polaris pod:**

**_`2025-08-19 17:41:51,220 INFO [org.apa.pol.ser.exc.IcebergExceptionMapper] [,POLARIS] [,,,] (executor-thread-1) Full RuntimeException: software.amazon.awssdk.core.exception.SdkClientException: Received an UnknownHostException when attempting to interact with a service. See cause for the exact endpoint that is failing to resolve. If this is happening on an endpoint that previously worked, there may be a network connectivity issue or your DNS cache could be storing endpoints for too long._**
at software.amazon.awssdk.core.exception.SdkClientException$BuilderImpl.build(SdkClientException.java:130)
at software.amazon.awssdk.awscore.interceptor.HelpfulUnknownHostExceptionInterceptor.modifyException(HelpfulUnknownHostExceptionInterceptor.java:59)
at software.amazon.awssdk.core.interceptor.ExecutionInterceptorChain.modifyException(ExecutionInterceptorChain.java:181)
at software.amazon.awssdk.core.internal.http.pipeline.stages.utils.ExceptionReportingUtils.runModifyException(ExceptionReportingUtils.java:54)
at software.amazon.awssdk.core.internal.http.pipeline.stages.utils.ExceptionReportingUtils.reportFailureToInterceptors(ExceptionReportingUtils.java:38)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:39)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:26)
at software.amazon.awssdk.core.internal.http.AmazonSyncHttpClient$RequestExecutionBuilderImpl.execute(AmazonSyncHttpClient.java:210)
at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.invoke(BaseSyncClientHandler.java:103)
at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.doExecute(BaseSyncClientHandler.java:173)
at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.lambda$execute$1(BaseSyncClientHandler.java:80)
at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.measureApiCallSuccess(BaseSyncClientHandler.java:182)
at software.amazon.awssdk.core.internal.handler.BaseSyncClientHandler.execute(BaseSyncClientHandler.java:74)
at software.amazon.awssdk.core.client.handler.SdkSyncClientHandler.execute(SdkSyncClientHandler.java:45)
at software.amazon.awssdk.awscore.client.handler.AwsSyncClientHandler.execute(AwsSyncClientHandler.java:53)
at software.amazon.awssdk.services.s3.DefaultS3Client.putObject(DefaultS3Client.java:11227)
at org.apache.iceberg.aws.s3.S3OutputStream.completeUploads(S3OutputStream.java:444)
at org.apache.iceberg.aws.s3.S3OutputStream.close(S3OutputStream.java:270)
at org.apache.iceberg.aws.s3.S3OutputStream.close(S3OutputStream.java:256)
at java.base/sun.nio.cs.StreamEncoder.implClose(StreamEncoder.java:439)
at java.base/sun.nio.cs.StreamEncoder.lmyedClose(StreamEncoder.java:237)
at java.base/sun.nio.cs.StreamEncoder.close(StreamEncoder.java:222)
at java.base/java.io.OutputStreamWriter.close(OutputStreamWriter.java:266)
at org.apache.iceberg.TableMetadataParser.internalWrite(TableMetadataParser.java:133)
at org.apache.iceberg.TableMetadataParser.overwrite(TableMetadataParser.java:117)
at org.apache.polaris.service.catalog.iceberg.IcebergCatalog$BasePolarisTableOperations.writeNewMetadata(IcebergCatalog.java:1571)
at org.apache.polaris.service.catalog.iceberg.IcebergCatalog$BasePolarisTableOperations.writeNewMetadataIfRequired(IcebergCatalog.java:1560)
at org.apache.polaris.service.catalog.iceberg.IcebergCatalog$BasePolarisTableOperations.doCommit(IcebergCatalog.java:1430)
at org.apache.polaris.service.catalog.iceberg.IcebergCatalog$BasePolarisTableOperations.commit(IcebergCatalog.java:1270)
at org.apache.iceberg.BaseMetastoreCatalog$BaseMetastoreCatalogTableBuilder.create(BaseMetastoreCatalog.java:201)
at org.apache.polaris.service.catalog.iceberg.CatalogHandlerUtils.createTable(CatalogHandlerUtils.java:339)
at org.apache.polaris.service.catalog.iceberg.CatalogHandlerUtils_ClientProxy.createTable(Unknown Source)
at org.apache.polaris.service.catalog.iceberg.IcebergCatalogHandler.createTableDirect(IcebergCatalogHandler.java:394)
at org.apache.polaris.service.catalog.iceberg.IcebergCatalogAdapter.lambda$createTable$6(IcebergCatalogAdapter.java:360)
at org.apache.polaris.service.catalog.iceberg.IcebergCatalogAdapter.withCatalog(IcebergCatalogAdapter.java:183)
at org.apache.polaris.service.catalog.iceberg.IcebergCatalogAdapter.createTable(IcebergCatalogAdapter.java:347)
at org.apache.polaris.service.catalog.iceberg.IcebergCatalogAdapter_ClientProxy.createTable(Unknown Source)
at org.apache.polaris.service.catalog.api.IcebergRestCatalogApi.createTable(IcebergRestCatalogApi.java:193)
at org.apache.polaris.service.catalog.api.IcebergRestCatalogApi_Subclass.createTable$$superforward(Unknown Source)
at org.apache.polaris.service.catalog.api.IcebergRestCatalogApi_Subclass$$function$$3.apply(Unknown Source)
at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:73)
at io.quarkus.arc.impl.AroundInvokeInvocationContext$NextAroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:97)
at io.smallrye.faulttolerance.FaultToleranceInterceptor.lambda$syncFlow$8(FaultToleranceInterceptor.java:364)
at io.smallrye.faulttolerance.core.Future.from(Future.java:85)
at io.smallrye.faulttolerance.FaultToleranceInterceptor.lambda$syncFlow$9(FaultToleranceInterceptor.java:364)
at io.smallrye.faulttolerance.core.FaultToleranceContext.call(FaultToleranceContext.java:20)
at io.smallrye.faulttolerance.core.Invocation.apply(Invocation.java:29)
at io.smallrye.faulttolerance.core.metrics.MetricsCollector.apply(MetricsCollector.java:98)
at io.smallrye.faulttolerance.FaultToleranceInterceptor.syncFlow(FaultToleranceInterceptor.java:367)
at io.smallrye.faulttolerance.FaultToleranceInterceptor.intercept(FaultToleranceInterceptor.java:205)
at io.smallrye.faulttolerance.FaultToleranceInterceptor_Bean.intercept(Unknown Source)
at io.quarkus.arc.impl.InterceptorInvocation.invoke(InterceptorInvocation.java:42)
at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:70)
at io.quarkus.arc.impl.AroundInvokeInvocationContext$NextAroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:97)
at io.quarkus.micrometer.runtime.MicrometerTimedInterceptor.timedMethod(MicrometerTimedInterceptor.java:79)
at io.quarkus.micrometer.runtime.MicrometerTimedInterceptor_Bean.intercept(Unknown Source)
at io.quarkus.arc.impl.InterceptorInvocation.invoke(InterceptorInvocation.java:42)
at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:70)
at io.quarkus.arc.impl.AroundInvokeInvocationContext$NextAroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:97)
at io.quarkus.security.runtime.interceptor.SecurityHandler.handle(SecurityHandler.java:27)
at io.quarkus.security.runtime.interceptor.RolesAllowedInterceptor.intercept(RolesAllowedInterceptor.java:29)
at io.quarkus.security.runtime.interceptor.RolesAllowedInterceptor_Bean.intercept(Unknown Source)
at io.quarkus.arc.impl.InterceptorInvocation.invoke(InterceptorInvocation.java:42)
at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:70)
at io.quarkus.arc.impl.AroundInvokeInvocationContext.proceed(AroundInvokeInvocationContext.java:62)
at io.quarkus.resteasy.reactive.server.runtime.StandardSecurityCheckInterceptor.intercept(StandardSecurityCheckInterceptor.java:44)
at io.quarkus.resteasy.reactive.server.runtime.StandardSecurityCheckInterceptor_RolesAllowedInterceptor_Bean.intercept(Unknown Source)
at io.quarkus.arc.impl.InterceptorInvocation.invoke(InterceptorInvocation.java:42)
at io.quarkus.arc.impl.AroundInvokeInvocationContext.perform(AroundInvokeInvocationContext.java:30)
at io.quarkus.arc.impl.InvocationContexts.performAroundInvoke(InvocationContexts.java:27)
at org.apache.polaris.service.catalog.api.IcebergRestCatalogApi_Subclass.createTable(Unknown Source)
at org.apache.polaris.service.catalog.api.IcebergRestCatalogApi$quarkusrestinvoker$createTable_01f5a1bd6d7815fd3314a553161c943c8cd03101.invoke(Unknown Source)
at org.jboss.resteasy.reactive.server.handlers.InvocationHandler.handle(InvocationHandler.java:29)
at io.quarkus.resteasy.reactive.server.runtime.QuarkusResteasyReactiveRequestContext.invokeHandler(QuarkusResteasyReactiveRequestContext.java:141)
at org.jboss.resteasy.reactive.common.core.AbstractResteasyReactiveContext.run(AbstractResteasyReactiveContext.java:147)
at io.quarkus.vertx.core.runtime.VertxCoreRecorder$15.runWith(VertxCoreRecorder.java:638)
at org.jboss.threads.EnhancedQueueExecutor$Task.doRunWith(EnhancedQueueExecutor.java:2675)
at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2654)
at org.jboss.threads.EnhancedQueueExecutor.runThreadBody(EnhancedQueueExecutor.java:1627)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1594)
at org.jboss.threads.DelegatingRunnable.run(DelegatingRunnable.java:11)
at org.jboss.threads.ThreadLocalResettingRunnable.run(ThreadLocalResettingRunnable.java:11)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: software.amazon.awssdk.core.exception.SdkClientException: Unable to execute HTTP request: iceberg-bucket.minio-data-lake-service.my-ns.svc.cluster.local: Name or service not known (SDK Attempt Count: 6)
at software.amazon.awssdk.core.exception.SdkClientException$BuilderImpl.build(SdkClientException.java:130)
at software.amazon.awssdk.core.exception.SdkClientException$BuilderImpl.build(SdkClientException.java:95)
at software.amazon.awssdk.core.internal.http.pipeline.stages.utils.RetryableStageHelper.retryPolicyDisallowedRetryException(RetryableStageHelper.java:168)
at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:73)
at software.amazon.awssdk.core.internal.http.pipeline.stages.RetryableStage.execute(RetryableStage.java:36)
at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:53)
at software.amazon.awssdk.core.internal.http.StreamManagingStage.execute(StreamManagingStage.java:35)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.executeWithTimer(ApiCallTimeoutTrackingStage.java:82)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:62)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallTimeoutTrackingStage.execute(ApiCallTimeoutTrackingStage.java:43)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:50)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ApiCallMetricCollectionStage.execute(ApiCallMetricCollectionStage.java:32)
at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
at software.amazon.awssdk.core.internal.http.pipeline.RequestPipelineBuilder$ComposingRequestPipelineStage.execute(RequestPipelineBuilder.java:206)
at software.amazon.awssdk.core.internal.http.pipeline.stages.ExecutionFailureExceptionReportingStage.execute(ExecutionFailureExceptionReportingStage.java:37)
... 78 more
**_Suppressed: software.amazon.awssdk.core.exception.SdkClientException: Request attempt 1 failure: Unable to execute HTTP request: iceberg-bucket.minio-data-lake-service.my-ns.svc.cluster.local: Name or service not known_**
...`

### Expected Behavior

Polaris would work well and Iceberg tables get created successfully.

### Additional context

_No response_

### System information

OS: RHEL 8

Start with polaris-catalog.yaml and minio-data-lake.yaml, then reproduce the curl catalog setup and Flink SQL CREATE TABLE sequence. Trace the UnknownHostException to the endpoint being resolved and compare the Polaris storage configuration with the catalog properties; done means identifying a reproducible cause and a configuration or code change that makes table creation succeed.

Written by the indexing model from the issue text.