Current Behavior

A large build with configuration cache enabled crashes with OOM, whereas it would complete successfully with Gradle 9.0

Expected Behavior

A large build that completes with 9.0 without errors should do so with Gradle 9.1.0 as well.

Context (optional)

This may be the same as #34691. If a fix for this addresses that bug, that would likely be the case.

We suspect that the current issue was introduced by this: #34019 - the reproducer queries a large number of properties in a large number of projects.

This does not look like a leak - under gradle-profiler, a heap dump taken at the end of the build is quite similar between 9.0 and 9.1. However, with large enough maxProperties and maxProjects, 9.1.0 RC1 crashes with OOM with parameters that 9.0 can handle, leaving a heap dump behind.

This histogram is based on a heap dump generated by the JVM for a build crashing due to an OOM.

Self-contained Reproducer Project

// settings.gradle
def maxProjects = System.getProperty("maxProjects", "1").toInteger()

(1..maxProjects).each { n ->
    include("project$n")
    def projectDir = file("project$n")
    projectDir.mkdirs()
    project(":project$n").projectDir = file("project$n")
}

// build.gradle
def maxProperties = System.getProperty("maxProperties", "1").toInteger()
    
subprojects { proj ->
    (1..maxProperties).each { 
        proj.findProperty("property${it}")
    }
    println("Accessed ${maxProperties} properties from ${proj}")
    tasks.register("printInfo") { task ->
        def taskPath = task.path
        doLast {
            println("Running ${taskPath}")
        }
    }
}

This completes successfully with Gradle 9.0:

gradle help -DmaxProjects=4000 -DmaxProperties=200 --no-daemon --configuration-cache

but fails with an OutOfMemoryError with Gradle 9.1.0 RC1.

Gradle version

9.1.0-rc-1

Gradle version that used to work

9.0.0

Build scan URL (optional)

No response

Your Environment (optional)

No response