S3: NoSuchFieldError: PASCAL_CASE_TO_CAMEL_CASE

[hohwille]

My expectation would be that AWS S3Client is working.

Actual result:

Caused by: java.lang.NoSuchFieldError: PASCAL_CASE_TO_CAMEL_CASE
	at software.amazon.awssdk.regions.internal.util.EC2MetadataUtils.<clinit>(EC2MetadataUtils.java:95)
	at software.amazon.awssdk.regions.providers.InstanceProfileRegionProvider.tryDetectRegion(InstanceProfileRegionProvider.java:68)
	at software.amazon.awssdk.regions.providers.InstanceProfileRegionProvider.getRegion(InstanceProfileRegionProvider.java:52)
	at software.amazon.awssdk.regions.providers.AwsRegionProviderChain.getRegion(AwsRegionProviderChain.java:51)
	at software.amazon.awssdk.awscore.client.builder.AwsDefaultClientBuilder.regionFromDefaultProvider(AwsDefaultClientBuilder.java:202)
	at software.amazon.awssdk.awscore.client.builder.AwsDefaultClientBuilder.resolveRegion(AwsDefaultClientBuilder.java:184)
	at software.amazon.awssdk.awscore.client.builder.AwsDefaultClientBuilder.finalizeChildConfiguration(AwsDefaultClientBuilder.java:135)
	at software.amazon.awssdk.core.client.builder.SdkDefaultClientBuilder.syncClientConfiguration(SdkDefaultClientBuilder.java:157)
	at software.amazon.awssdk.services.s3.DefaultS3ClientBuilder.buildClient(DefaultS3ClientBuilder.java:27)
	at software.amazon.awssdk.services.s3.DefaultS3ClientBuilder.buildClient(DefaultS3ClientBuilder.java:22)
	at software.amazon.awssdk.core.client.builder.SdkDefaultClientBuilder.build(SdkDefaultClientBuilder.java:129)

See FasterXML/jackson-databind#2897

Any workarounds (except downgrading jackson to old and insecure versions)?

[hohwille]

So the problem has been discussed and solved in the linked Jackson issue.
Option to fix the problem are:

• change jackson to 2.15.4
• or update AWS s3 client to 2.23.0+ so e.g. to the currently latest 2.24.9

Hence, I am closing this.

[danjee]

Having the same issue with https://mvnrepository.com/artifact/software.amazon.awssdk/s3/2.25.17

[eelectron]

Currently I have sdk version 1.11.421 so any idea if we have any 1.x.x version which solves below issue so that it will be easier to upgrade my service without any breaking changes ?
As directly upgrading to 2.25.17 might break something else .

java.lang.ExceptionInInitializerError: Exception java.lang.NoSuchFieldError: PASCAL_CASE_TO_CAMEL_CASE [in thread "ServiceHealth"]
	at com.amazonaws.util.EC2MetadataUtils.<clinit>(EC2MetadataUtils.java:85)
	at com.amazonaws.auth.InstanceProfileCredentialsProvider$InstanceMetadataCredentialsEndpointProvider.getCredentialsEndpoint(InstanceProfileCredentialsProvider.java:195)
	at com.amazonaws.auth.EC2CredentialsFetcher.fetchCredentials(EC2CredentialsFetcher.java:122)
	at com.amazonaws.auth.EC2CredentialsFetcher.getCredentials(EC2CredentialsFetcher.java:82)
	at com.amazonaws.auth.InstanceProfileCredentialsProvider.getCredentials(InstanceProfileCredentialsProvider.java:172)
	at com.amazonaws.auth.EC2ContainerCredentialsProviderWrapper.getCredentials(EC2ContainerCredentialsProviderWrapper.java:75)
	at com.amazonaws.auth.AWSCredentialsProviderChain.getCredentials(AWSCredentialsProviderChain.java:117)
	at com.amazonaws.services.s3.S3CredentialsProviderChain.getCredentials(S3CredentialsProviderChain.java:36)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.getCredentialsFromContext(AmazonHttpClient.java:1214)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.runBeforeRequestHandlers(AmazonHttpClient.java:790)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:740)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:733)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:715)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:675)
	at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:657)
	at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:521)
	at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:4705)

[fanxia00]

For others who are looking for an answer, the error from the original post seems is from SDK v2 (software.amazon.awssdk).

The compatibility in SDK v1 (this repo) seems is fixed in 1.12.655:
4a5938b