chore(java): Attempt to reduce flaky CI#2220
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## [4.0.0](v3.9.1...v4.0.0) (2026-04-16) ### ⚠ BREAKING CHANGES * **.net:** Bump MPL V2 (#2145) ### feat * **.net:** Bump MPL V2 ([#2145](#2145)) ([87c534b](87c534b)) ### Fixes -- Java * **java:** drop hkdf offset method ([#2222](#2222)) ([7aad5fb](7aad5fb)) ### Maintenance -- Java * **java:** Attempt to reduce flaky CI ([#2220](#2220)) ([987aec6](987aec6)) * **java:** attempt to reduce flaky CI failures ([#2203](#2203)) ([b4d88f1](b4d88f1)) * **java:** merge from main ([53d6ba3](53d6ba3)) * **java:** shut down local DDB in test ([#2176](#2176)) ([fa1e151](fa1e151)) ### Maintenance -- Rust * **rust:** release v1.2.4 ([#2184](#2184)) ([6823d31](6823d31)) ### Miscellaneous * **.net:** add ddb local to .net release ([#2075](#2075)) ([db55bdf](db55bdf)) * **.net:** comment out testvectors from release ([#2076](#2076)) ([fdaa9e3](fdaa9e3)) * **.net:** fix release commands to include all json tv files ([#2072](#2072)) ([10f809d](10f809d)) * **.net:** pin mpl to latest ([#2065](#2065)) ([f6b64a6](f6b64a6)) * **.net:** reference submoduled mpl ([#2080](#2080)) ([be3f58f](be3f58f)) * add code coverage check ([#2171](#2171)) ([c2ae8e7](c2ae8e7)) * add DDBEC examples ([#2064](#2064)) ([9b7c284](9b7c284)) * add integration test and unit test ([#2139](#2139)) ([3cb8a96](3cb8a96)) * add migration examples ([#2057](#2057)) ([18dbc50](18dbc50)) * add more interop tests ([#2131](#2131)) ([c06bc3a](c06bc3a)) * add multi order test ([#2170](#2170)) ([d09cd16](d09cd16)) * add test for DDBEC with sdk v2 ([#2126](#2126)) ([e3ac7cd](e3ac7cd)) * add user agent string ([#2172](#2172)) ([88c597c](88c597c)) * bump GitHub Actions to latest versions ([#2144](#2144)) ([92615d4](92615d4)) * **ci:** add workflow_dispatch and remove run on PR for daily CI ([#2218](#2218)) ([d6fd0fb](d6fd0fb)) * **ci:** daily ci for branches ([#2208](#2208)) ([fcc4b97](fcc4b97)) * **ci:** remove branch default to main ([#2219](#2219)) ([1a3d1f0](1a3d1f0)) * **CI:** run clippy ([#2181](#2181)) ([6b54985](6b54985)) * **ci:** run test on Java 21 and windows OS ([#2159](#2159)) ([6e702d8](6e702d8)) * **ci:** use snapshot builds ([#2083](#2083)) ([0124ca6](0124ca6)) * copy DDBEC with SDK v2 code as-is from internal ([#2047](#2047)) ([dc439b4](dc439b4)) * delete ddbec which uses AWS SDK Java v1 ([#2193](#2193)) ([bb74687](bb74687)) * **deps:** bump actions/checkout v5->v6 and setup-docker-macos-action v1.0.2->v1.1.0 ([#2130](#2130)) ([337c776](337c776)) * **deps:** update aws-lc-sys requirement from 0.38 to 0.39 in /DynamoDbEncryption/runtimes/rust ([#2149](#2149)) ([b76bcb7](b76bcb7)) * fix CI (almost) and make AWS SDK v1 compileOnly ([#2049](#2049)) ([e509a56](e509a56)) * merge from main ([e9f8259](e9f8259)) * merge from main 2nd try ([eb17468](eb17468)) * merge from main and fix ubuntu failing ([#2192](#2192)) ([3317b4d](3317b4d)) * move put cache after signature verification ([#2223](#2223)) ([49b8b67](49b8b67)) * refactor non-prod CI to only run Go targets ([#2134](#2134)) ([0d2622c](0d2622c)) * release aws-db-esdk v1.2.3 ([#2122](#2122)) ([888aaba](888aaba)) * Rename `Directkmsmaterialsprovider` to `Directkmsmaterialprovider` ([#2150](#2150)) ([4126efa](4126efa)) * rename and format ([#2118](#2118)) ([091b7b4](091b7b4)) * run java test on ubuntu ([#2167](#2167)) ([cffa72c](cffa72c)) * update internal legacy override with adapter pattern ([#2054](#2054)) ([abbac83](abbac83)) * update readme and remove comments in CI ([#2158](#2158)) ([7e1c863](7e1c863))
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## [4.0.0](v3.9.0-java...v4.0.0-java) (2026-04-29) ### ⚠ BREAKING CHANGES * **java:** add DDBEC with SDK v2 and remove DDBEC with SDK V1 (#2048) * The AWS Database Encryption SDK for DynamoDB will NOT support AWS SDK for Java 1.x in the embedded 2.x version (which was known as DynamoDB Encryption Client(DDBEC)). The embedded DDBEC will now use AWS SDK for Java 2.x. These changes are limited to embedded DDBEC and rest of DB-ESDK has no code changes. * If consumer of DB-ESDK is using APIs from namespace `com.amazonaws.services.dynamodbv2` through DB-ESDK then they have to migrate to use corresponding API from namespace `com.amazonaws.services.dynamodbv2.datamodeling.sdkv2`. If consumer of DB-ESDK are NOT using namespace `com.amazonaws.services.dynamodbv2` through DB-ESDK then there will not be any breaking change when moving to next major version. ### Features -- Java * **java:** add DDBEC with SDK v2 and remove DDBEC with SDK V1 ([#2048](#2048)) ([035dbe3](035dbe3)) ### Fixes -- All Languages * use UUIDs and cleanup in beacon styles example to avoid stale item collisions ([#2125](#2125)) ([773c1ff](773c1ff)) ### Fixes -- Java * **java:** drop hkdf offset method ([#2011](#2011)) ([b8f29f9](b8f29f9)) ### Maintenance -- All Languages * **dafny:** bump MPL and update mutable map ([#1974](#1974)) ([e9ea870](e9ea870)) * **dafny:** bump smithy dafny ([#1971](#1971)) ([85309a0](85309a0)) ### Maintenance -- Java * **java:** Allow local testing ([#1947](#1947)) ([bf5a106](bf5a106)) * **java:** Attempt to reduce flaky CI ([#2220](#2220)) ([987aec6](987aec6)) * **java:** attempt to reduce flaky CI failures ([#2203](#2203)) ([b4d88f1](b4d88f1)) * **java:** bring back test against released MPL version ([#2226](#2226)) ([a340b34](a340b34)) * **java:** fix GetEncryptedDataKeyDescription java Example ([#1973](#1973)) ([ba8fcb7](ba8fcb7)) * **java:** retry failed workflow ([#2229](#2229)) ([2668d68](2668d68)) * **java:** shut down local DDB in test ([#2176](#2176)) ([fa1e151](fa1e151))
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Issue #, if available:
Description of changes:
The test vectors workflow uses Docker to run DynamoDB Local on macos-15-intel. Docker is installed via Colima, which
has intermittent failures pulling container images (socket resets, layer corruption). Added an explicit docker pull
step with 3 retries using nick-fields/retry@v3 before the rrainn/dynamodb-action runs. If the pull succeeds on any
attempt, the action finds the image cached locally and skips the pull.
TestTransactWriteAndGet used a hardcoded partition key "transact". When multiple CI matrix jobs (Java 8/11/17/19/21 ×
OS) run in parallel against the same DynamoDB table, concurrent transactWriteItems calls on the same item cause
TransactionConflict. Fixed by appending the existing randomNum field (already used by other tests in this class for the
same reason) to the partition key.
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