Java Google AppEngine-无法分配内存错误

Google AppEngine上托管的Jar应用程序收到内存不足错误。停止版本并再次启动似乎暂时解决了问题，但并不能解释问题的根源。根据日志，似乎没有导致问题的特定代码段

预期 Jar应用程序运行逻辑，根据

TimerTask

连续填充Firestore数据库

观察 错误

[

{
"textPayload": "#  Out of Memory Error (os_linux.cpp:2643), pid=1, tid=0x00007f408a5ba700\n",
"insertId": "4t9c0fkq1x7u8j87f",
"resource": {
"type": "gae_app",
"labels": {
   "project_id": "coinverse-media-staging",
   "version_id": "media-staging-0205190312pm",
   "module_id": "default"
 }
},

"timestamp": "2019-04-27T15:22:17Z",
"labels": {
 "compute.googleapis.com/resource_name": "91f332caeaa0",
 "compute.googleapis.com/resource_id": "1199188591019602609",
 "compute.googleapis.com/zone": "us-central1-c",
 "appengine.googleapis.com/instance_name": "aef-default-media--staging--0205190312pm-129n"
},

"logName": "projects/coinverse-media-staging/logs/appengine.googleapis.com%2Fstdout",
"receiveTimestamp": "2019-04-27T15:22:21.994076321Z"
}
]

警告

[
{
"textPayload": "OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00000000e1400000, 515899392, 0) failed; error='Cannot allocate memory' (errno=12)\n",
"insertId": "4t9c0fkq1x7u8k14c",
"resource": {
 "type": "gae_app",
 "labels": {
   "project_id": "coinverse-media-staging",
   "version_id": "media-staging-0205190312pm",
   "module_id": "default"
 }
},

"timestamp": "2019-04-27T15:23:18Z",
"labels": {
 "appengine.googleapis.com/instance_name": "aef-default-media--staging--0205190312pm-129n",
 "compute.googleapis.com/resource_name": "91f332caeaa0",
 "compute.googleapis.com/resource_id": "1199188591019602609",
 "compute.googleapis.com/zone": "us-central1-c"
},
"logName": "projects/coinverse-media-staging/logs/appengine.googleapis.com%2Fstderr",
"receiveTimestamp": "2019-04-27T15:23:21.993115250Z"
}

图书馆 格雷德尔先生

buildscript {
ext.kotlin_version = '1.3.20'
ext.junitJupiterVersion  = '5.3.2'

repositories {
    mavenCentral()
}
dependencies {
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    classpath 'org.junit.platform:junit-platform-gradle-plugin:1.0.3'
}
}

plugins {
    id 'java'
    id 'org.jetbrains.kotlin.jvm' version '1.2.51'
}

version '1.0-SNAPSHOT'

sourceCompatibility = 1.8

repositories {
    mavenCentral()
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
    testImplementation group: 'junit', name: 'junit', version: '5.3.2'
    // JUnit Jupiter API and TestEngine implementation
    testImplementation("org.junit.jupiter:junit-jupiter-api:${junitJupiterVersion}")
    testRuntime("org.junit.jupiter:junit-jupiter-engine:${junitJupiterVersion}")
    testImplementation "org.assertj:assertj-core:3.11.1"
    // To avoid compiler warnings about @API annotations in JUnit code
    testCompileOnly 'org.apiguardian:apiguardian-api:1.0.0'
    implementation 'com.squareup.retrofit2:retrofit:2.5.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.5.0'
    implementation 'com.squareup.retrofit2:adapter-rxjava:2.5.0'
    implementation 'io.reactivex.rxjava2:rxjava:2.2.5'
    implementation 'com.google.firebase:firebase-admin:6.6.0'
    implementation 'com.google.cloud:google-cloud-storage:1.56.0'
    implementation 'com.google.apis:google-api-services-youtube:v3-rev206-1.25.0'
}

compileKotlin {
    kotlinOptions.jvmTarget = "1.8"
}
compileTestKotlin {
    kotlinOptions.jvmTarget = "1.8"
}