Update alternator load-balancing from 1.0.0 to 2.0.1#286
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Update alternator load-balancing from 1.0.0 to 2.0.1#286dkropachev wants to merge 6 commits intomasterfrom
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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace usage of internal AlternatorLiveNodes and BasicQueryPlanInterceptor with the public AlternatorDynamoDbClient.builder() API from load-balancing 2.0.1. This builder implements DynamoDbClientBuilder and handles load balancing internally. Also use it in buildDynamoClient to add load balancing to table management operations (create/describe/stream).
Expose AlternatorDynamoDbClient.builder() settings through the migrator YAML config under an optional 'alternator' section for both source and target DynamoDB settings: - datacenter/rack: DC and rack-aware routing with fallback chain - activeRefreshIntervalMs/idleRefreshIntervalMs: node list refresh tuning - compression: GZIP compression of request bodies - optimizeHeaders: reduce HTTP header overhead Settings are applied to both direct SDK client paths (deletes, stream replication, table management) and Hadoop-based bulk I/O paths (scan, batch write) via Hadoop config passthrough. Alternator with no credentials is supported - the builder defaults to anonymous access when no credentials are configured.
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The load-balancing 2.0.1 library is compiled for Java 11 (class file version 55.0). Update CI workflows to use Java 11 while keeping the compilation target at Java 8 for maximum compatibility.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…WSCredentials.toProvider Replace null routing scope sentinel with idiomatic Option pattern in applyAlternatorSettings, and reuse the existing AWSCredentials.toProvider helper in AlternatorLoadBalancingEnabler to eliminate credential reconstruction duplication. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
com.scylladb.alternator:load-balancingfrom 1.0.0 to 2.0.1AlternatorDynamoDbClient.builder()API instead of internalAlternatorLiveNodes+BasicQueryPlanInterceptorAlternatorDynamoDbClient.builder()inbuildDynamoClientto add load balancing to table management, delete, and stream replication operations (not just Hadoop bulk I/O)alternatorYAML section:datacenter/rack: DC and rack-aware routing with automatic fallbackactiveRefreshIntervalMs/idleRefreshIntervalMs: node list refresh tuningcompression: GZIP compression of request bodiesoptimizeHeaders: reduce HTTP header overheadTest plan