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Client creation defaults - AWS SDK for Java 2.x

Client creation defaults

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In version 2.x, the following changes have been made to the default client creation logic.

  • The default credential provider chain for S3 no longer includes anonymous credentials. You must manually specify anonymous access to S3 by using the AnonymousCredentialsProvider.

  • The following environment variables related to default client creation are different.

    1.x 2.x

    AWS_CBOR_DISABLED

    CBOR_ENABLED

    AWS_ION_BINARY_DISABLE

    BINARY_ION_ENABLED

  • The following system properties related to default client creation are different.

    1.x 2.x

    com.amazonaws.sdk.disableEc2Metadata

    aws.disableEc2Metadata

    com.amazonaws.sdk.ec2MetadataServiceEndpointOverride

    aws.ec2MetadataServiceEndpoint

    com.amazonaws.sdk.disableCbor

    aws.cborEnabled

    com.amazonaws.sdk.disableIonBinary

    aws.binaryIonEnabled

  • Version 2.x does not support the following system properties.

  • 1.x

    com.amazonaws.sdk.disableCertChecking

    com.amazonaws.sdk.enableDefaultMetrics

    com.amazonaws.sdk.enableThrottledRetry

    com.amazonaws.regions.RegionUtils.fileOverride

    com.amazonaws.regions.RegionUtils.disableRemote

    com.amazonaws.services.s3.disableImplicitGlobalClients

    com.amazonaws.sdk.enableInRegionOptimizedMode

  • Loading Region configuration from a custom endpoints.json file is no longer supported.

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