cgcote · Oct 12, 2026 · Oct 12, 2026
@@ -7,6 +7,7 @@
     "divided by the 491 observed pipelines.",
     "JDBC virtual-project weights use coverage-complete test results from",
     "pipeline 144158285 on 2026-10-12.",
+    "Lettuce virtual-project weights use coverage-complete pipeline 144154452.",
     "Projects absent from this map fall back to the default weight.",
     "See docs/ci-test-shard-weights.md to regenerate."
   ],
@@ -17,24 +18,29 @@
     "job": "test_inst",
     "pipelines_observed": 491,
     "projects_measured": 35,
-    "projects_derived_from_measured_suites": 14
+    "projects_derived_from_measured_suites": 20
   },
   "weights": {
-    ":dd-java-agent:instrumentation:lettuce:lettuce-5.0": 978.1,
     ":dd-java-agent:instrumentation:akka:akka-http:akka-http-10.0": 612.3,
     ":dd-java-agent:instrumentation:spring:spring-webflux:spring-webflux-5.0": 509.4,
     ":dd-java-agent:instrumentation:kafka:kafka-clients-0.11": 379.1,
     ":dd-java-agent:instrumentation:jdbc:jdbc-remote-old-h2-test": 321.831,
+    ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:lettuce-62-test": 318.271,
     ":dd-java-agent:instrumentation:jdbc:jdbc-remote-dbm-forked-test": 310.736,
+    ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:lettuce-51-test": 290.357,
     ":dd-java-agent:instrumentation:jdbc:jdbc-remote-instrumentation-forked-test": 279.971,
     ":dd-java-agent:instrumentation:akka:akka-http:akka-http-10.6": 258.0,
+    ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:lettuce-60-test": 253.057,
+    ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:lettuce-base-test": 244.848,
     ":dd-java-agent:instrumentation:jdbc:jdbc-remote-old-postgres-test": 241.128,
     ":dd-java-agent:instrumentation:jdbc:jdbc-remote-dbm-prepared-forked-test": 228.78,
+    ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:lettuce-61-test": 222.911,
     ":dd-java-agent:instrumentation:aws-java:aws-java-sdk-2.2": 220.7,
     ":dd-java-agent:instrumentation:mule-4.5": 217.1,
     ":dd-java-agent:instrumentation:grpc-1.5": 196.7,
     ":dd-java-agent:instrumentation:junit:junit-5:junit-5.3": 195.4,
     ":dd-java-agent:instrumentation:liberty:liberty-20.0": 187.3,
+    ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:lettuce-forked-tests": 180.254,
     ":dd-java-agent:instrumentation:datastax-cassandra:datastax-cassandra-3.8": 175.4,
     ":dd-java-agent:instrumentation:jdbc:jdbc-old-postgres-test": 173.218,
     ":dd-java-agent:instrumentation:maven:maven-3.2.1": 172.2,

@@ -109,9 +109,9 @@ class TestShardBalancerTest {
 
   @Test
   fun `bundled weights file is parsed`() {
-    assertThat(WEIGHTS).hasSize(49)
+    assertThat(WEIGHTS).hasSize(54)
     assertThat(WEIGHTS.values).allSatisfy { weight -> assertThat(weight).isPositive() }
-    assertThat(heaviestProjects(2)).containsExactly(LETTUCE_5_0, AKKA_HTTP_10_0)
+    assertThat(heaviestProjects(2)).containsExactly(AKKA_HTTP_10_0, SPRING_WEBFLUX_5_0)
   }
 
   @Test
@@ -138,8 +138,9 @@ class TestShardBalancerTest {
 
   companion object {
     private const val INSTRUMENTATION_PREFIX = ":dd-java-agent:instrumentation:"
-    private const val LETTUCE_5_0 = ":dd-java-agent:instrumentation:lettuce:lettuce-5.0"
     private const val AKKA_HTTP_10_0 = ":dd-java-agent:instrumentation:akka:akka-http:akka-http-10.0"
+    private const val SPRING_WEBFLUX_5_0 =
+      ":dd-java-agent:instrumentation:spring:spring-webflux:spring-webflux-5.0"
 
     private val WEIGHTS = loadDefaultWeights()
 

@@ -102,6 +102,12 @@ instrumentationNaming {
     "jdbc-remote-dbm-prepared-forked-test",
     "jdbc-remote-instrumentation-forked-test",
     "jdbc-other-forked-tests",
+    "lettuce-base-test",
+    "lettuce-forked-tests",
+    "lettuce-51-test",
+    "lettuce-60-test",
+    "lettuce-61-test",
+    "lettuce-62-test",
   ]
   suffixes = ["-common", "-stubs", "-iast"]
 }

@@ -49,3 +49,31 @@ dependencies {
     usesService(testcontainersLimit)
   }
 }
+
+// In sharded CI, virtual child projects expose each version suite independently. The latest
+// dependency suites stay on this project and continue to run through allLatestDepTests.
+if (rootProject.providers.gradleProperty("slot").isPresent()) {
+  tasks.named("allTests") {
+    setDependsOn([])
+  }
+}
+
+def ciTestShards = [
+  'lettuce-base-test': tasks.named('test'),
+  'lettuce-forked-tests': tasks.named('forkedTest'),
+  'lettuce-51-test': tasks.named('lettuce51Test'),
+  'lettuce-60-test': tasks.named('lettuce60Test'),
+  'lettuce-61-test': tasks.named('lettuce61Test'),
+  'lettuce-62-test': tasks.named('lettuce62Test'),
+]
+
+def ciShardProjectPaths = rootProject.extensions.extraProperties.get('ciShardProjectPaths') as Map
+ciTestShards.each { childName, testTask ->
+  def childPath = ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:$childName"
+  ciShardProjectPaths[testTask.get().path] = childPath
+  project(childPath) {
+    tasks.register("allTests") {
+      dependsOn(testTask)
+    }
+  }
+}
@@ -0,0 +1 @@
+// CI-only virtual project; its allTests task is registered by the parent Lettuce 5 project.
@@ -0,0 +1 @@
+// CI-only virtual project; its allTests task is registered by the parent Lettuce 5 project.
@@ -0,0 +1 @@
+// CI-only virtual project; its allTests task is registered by the parent Lettuce 5 project.
@@ -0,0 +1 @@
+// CI-only virtual project; its allTests task is registered by the parent Lettuce 5 project.
@@ -0,0 +1 @@
+// CI-only virtual project; its allTests task is registered by the parent Lettuce 5 project.
@@ -0,0 +1 @@
+// CI-only virtual project; its allTests task is registered by the parent Lettuce 5 project.
@@ -77,6 +77,18 @@ The largest measured JDBC unit after this split is the old H2 remote suite at 32
 original 1116.7-second JDBC project. The next largest units are the remote DBM fork at 310.736 s and the remote
 instrumentation fork at 279.971 s. The checked-in weights come directly from that pipeline's suite durations.
 
+## Lettuce 5 suite shards
+
+The Lettuce 5 instrumentation uses six virtual child projects for its main `test_inst` suites: base, forked, 5.1,
+6.0, 6.1, and 6.2. Each child delegates to the existing task in `lettuce-5.0`; all suites retain their Redis
+container limit. The separate `allLatestDepTests` path remains on the parent project and continues to run
+`latestDepTest` and `latestDepForkedTest` unchanged.
+
+Pipeline `144154452` provided a coverage-complete JVM 11 measurement: 35 suites and 314 passing tests. Its measured
+task weights are 318.271 s for 6.2, 290.357 s for 5.1, 253.057 s for 6.0, 244.848 s for the base task, 222.911 s
+for 6.1, and 180.254 s for the forked task. The largest independently scheduled Lettuce unit is therefore 67.5%
+smaller than the original 978.1-second project.
+
 ## Known limitation: the heaviest project sets a floor
 
 A project's tests always run in a single shard, and tests run in parallel within a shard. The balancer only adds up
@@ -89,9 +101,9 @@ Before the JDBC suite split, the two heaviest projects per pipeline were:
 - `:dd-java-agent:instrumentation:jdbc`: 1116.7 s, about 18.6 minutes;
 - `:dd-java-agent:instrumentation:lettuce:lettuce-5.0`: 978.1 s, about 16.3 minutes.
 
-After the split, JDBC no longer sets that floor; `lettuce-5.0` is the heaviest remaining project. The slowest shard
-can never be faster than the heaviest single project, plus job setup. A project's wall-clock span is also longer
-than its summed test time: in that first pipeline, the `jdbc` tests (20.5 minutes of summed test time) spanned 27.6
+After the JDBC and Lettuce splits, their largest independently scheduled units are 321.831 s and 318.271 s. The largest
+remaining project is `akka-http-10.0` at 612.3 s. A project's wall-clock span is also longer than its summed test
+time: in the first duration-aware pipeline, the unsplit `jdbc` tests (20.5 minutes of summed test time) spanned 27.6
 minutes, starting about 10 minutes into the job, so its shard took 39 minutes. Under the previous hash-based
 assignment, the `jdbc` shard was already the slowest one.
 
@@ -100,7 +112,7 @@ bound as a check of the model rather than a guarantee for wall-clock time.
 
 The two heaviest projects must not share a shard, otherwise their floors stack. Capping weights only makes the model
 look balanced while letting more work pile onto the affected shard. Lowering the floor requires splitting the work
-into independently scheduled units, as the JDBC suite shards do above.
+into independently scheduled units, as the JDBC and Lettuce suite shards do above.
 
 ## When to refresh
 

@@ -491,6 +491,12 @@ include(
   ":dd-java-agent:instrumentation:karate:karate-2.0",
   ":dd-java-agent:instrumentation:kotlin-coroutines-1.3",
   ":dd-java-agent:instrumentation:lettuce:lettuce-4.0",
+  ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:lettuce-base-test",
+  ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:lettuce-forked-tests",
+  ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:lettuce-51-test",
+  ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:lettuce-60-test",
+  ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:lettuce-61-test",
+  ":dd-java-agent:instrumentation:lettuce:lettuce-5.0:lettuce-62-test",
   ":dd-java-agent:instrumentation:lettuce:lettuce-5.0",
   ":dd-java-agent:instrumentation:liberty:liberty-20.0",
   ":dd-java-agent:instrumentation:liberty:liberty-23.0",
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		// CI-only virtual project; its allTests task is registered by the parent Lettuce 5 project.