我在我的环境中面临着一种奇怪的行为。
我有一个我的 spring 应用程序的 fatjar，我在一个基于adoptopenjdk/openjdk11-openj9:jdk-11.0.8_10_openj9-0.21.0-debian-slim和使用垃圾收集器的 docker 容器中运行它G1GC。
Java 选项是：-Xmx128m -XX:+UseG1GC -Xss256K
fatjar 是由描述符生成maven-assembly-plugin的。jar-with-dependencies
我的应用程序使用aws-java-sdk-core:1.11.955谁依赖于jackson-core:2.6.7.
我的应用程序运行正常，但随机开始抛出NoClassDefFoundError. 阻止这种情况继续发生的唯一方法是重新启动我的容器/应用程序。
当com.amazonaws.internal.config.InternalConfig.Factory静态块运行并从类路径 ( ) 加载 json 资源文件/com/amazonaws/internal/config/awssdk_config_default.json并且它存在时，会发生此错误。
这是堆栈跟踪：
java.lang.NoClassDefFoundError: com.amazonaws.auth.DefaultAWSCredentialsProviderChain (initialization failure)
at java.base/java.lang.J9VMInternals.initializationAlreadyFailed(J9VMInternals.java:136)
....... (ommited by me, my code calling: new DefaultAWSCredentialsProviderChain())
Caused by: java.lang.IllegalStateException: Fatal: Failed to load the internal config for AWS Java SDK
at com.amazonaws.internal.config.InternalConfig$Factory.\u003cclinit\u003e(InternalConfig.java:340)
at com.amazonaws.util.VersionInfoUtils.userAgent(VersionInfoUtils.java:142)
at com.amazonaws.util.VersionInfoUtils.initializeUserAgent(VersionInfoUtils.java:137)
at com.amazonaws.util.VersionInfoUtils.getUserAgent(VersionInfoUtils.java:100)
at com.amazonaws.internal.EC2ResourceFetcher.\u003cclinit\u003e(EC2ResourceFetcher.java:44)
at com.amazonaws.auth.InstanceMetadataServiceCredentialsFetcher.\u003cinit\u003e(InstanceMetadataServiceCredentialsFetcher.java:36)
at com.amazonaws.auth.InstanceProfileCredentialsProvider.\u003cinit\u003e(InstanceProfileCredentialsProvider.java:102)
at com.amazonaws.auth.InstanceProfileCredentialsProvider.\u003cinit\u003e(InstanceProfileCredentialsProvider.java:82)
at com.amazonaws.auth.InstanceProfileCredentialsProvider.\u003cinit\u003e(InstanceProfileCredentialsProvider.java:66)
at com.amazonaws.auth.InstanceProfileCredentialsProvider.\u003cclinit\u003e(InstanceProfileCredentialsProvider.java:49)
at com.amazonaws.auth.EC2ContainerCredentialsProviderWrapper.initializeProvider(EC2ContainerCredentialsProviderWrapper.java:64)
at com.amazonaws.auth.EC2ContainerCredentialsProviderWrapper.\u003cinit\u003e(EC2ContainerCredentialsProviderWrapper.java:53)
at com.amazonaws.auth.DefaultAWSCredentialsProviderChain.\u003cinit\u003e(DefaultAWSCredentialsProviderChain.java:49)
at com.amazonaws.auth.DefaultAWSCredentialsProviderChain.\u003cclinit\u003e(DefaultAWSCredentialsProviderChain.java:43)
....... (ommited by me, my code calling: new DefaultAWSCredentialsProviderChain())
Caused by: java.io.IOException: Stream closed
at java.base/java.util.zip.InflaterInputStream.ensureOpen(InflaterInputStream.java:68)
at java.base/java.util.zip.InflaterInputStream.read(InflaterInputStream.java:143)
at java.base/java.io.FilterInputStream.read(FilterInputStream.java:133)
at com.fasterxml.jackson.core.json.ByteSourceJsonBootstrapper.ensureLoaded(ByteSourceJsonBootstrapper.java:489)
at com.fasterxml.jackson.core.json.ByteSourceJsonBootstrapper.detectEncoding(ByteSourceJsonBootstrapper.java:126)
at com.fasterxml.jackson.core.json.ByteSourceJsonBootstrapper.constructParser(ByteSourceJsonBootstrapper.java:215)
at com.fasterxml.jackson.core.JsonFactory._createParser(JsonFactory.java:1240)
at com.fasterxml.jackson.core.JsonFactory.createParser(JsonFactory.java:780)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2679)
at com.amazonaws.internal.config.InternalConfig.loadfrom(InternalConfig.java:250)
at com.amazonaws.internal.config.InternalConfig.load(InternalConfig.java:263)
at com.amazonaws.internal.config.InternalConfig$Factory.\u003cclinit\u003e(InternalConfig.java:336)
调试JsonFactoryand后ByteSourceJsonBootstrapper，没有调用“InputStream.close()”的代码。
所以我开始认为这可能是一个 JVM (OpenJ9) 错误......或者关于垃圾收集器 (G1GC) 的一些奇怪行为。
另一个奇怪的想法是，当我在本地环境中运行同一个 jar 时，我无法获取此FilterInputStream实例，而.InflaterInputStreamsun.net.www.protocol.jar.JarURLConnection$JarURLInputStream
Ps.：没有 ClassLoader 检测/操作。
有人可以给我一盏灯吗？