Increase test heap to 2g for rewrite-gradle

timtebeek · timtebeek · commit 3a53ecf7c463 · 2026-02-23T12:20:21.000+01:00
The K2 compiler used for KTS parsing loads many JDK modules and
consumes significant memory. The default test worker heap is
insufficient, causing OutOfMemoryError on CI.
diff --git a/rewrite-gradle/build.gradle.kts b/rewrite-gradle/build.gradle.kts
@@ -89,6 +89,7 @@ java {
 tasks.withType<Test>().configureEach {
     dependsOn(pluginLocalTestClasspath)
     systemProperty("org.openrewrite.gradle.local.use-embedded-classpath", pluginLocalTestClasspath.files.find { it.name == "test-manifest.txt" }!!.path)
+    maxHeapSize = "2g"
 }
 
 // This seems to be the only way to get the groovy compiler to emit java-8 compatible bytecode

Original file line number	Diff line number	Diff line change
`@@ -89,6 +89,7 @@ java {`
`89`	`89`	`tasks.withType<Test>().configureEach {`
`90`	`90`	`dependsOn(pluginLocalTestClasspath)`
`91`	`91`	`systemProperty("org.openrewrite.gradle.local.use-embedded-classpath", pluginLocalTestClasspath.files.find { it.name == "test-manifest.txt" }!!.path)`
	`92`	`+ maxHeapSize = "2g"`
`92`	`93`	`}`
`93`	`94`
`94`	`95`	`// This seems to be the only way to get the groovy compiler to emit java-8 compatible bytecode`