有一个Java核心转储; 运行jmap:
/usr/java/jdk1.8.0_25/bin/jmap -dump:format=b,file=dump.hprof /usr/bin/java core.31497
给出以下例外:
Attaching to core core.31497 from executable /usr/bin/java, please wait...
...
JVM version is 25.25-b02
...
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at sun.tools.jmap.JMap.runTool(JMap.java:201)
at sun.tools.jmap.JMap.main(JMap.java:130)
Caused by: sun.jvm.hotspot.utilities.AssertionFailure: can not get class data for sun/nio/ch/ThreadPool$$Lambda$10x00000007c0214428
at sun.jvm.hotspot.utilities.Assert.that(Assert.java:32)
at sun.jvm.hotspot.utilities.HeapHprofBinWriter.writeInstance(HeapHprofBinWriter.java:803)
...
at sun.jvm.hotspot.tools.Tool.start(Tool.java:223)
at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
at sun.jvm.hotspot.tools.HeapDumper.main(HeapDumper.java:83)
有什么想法吗？
运行 OpenStack Newton，全新安装，在尝试启动实例时在计算节点上（在 nova-compute.log 中）收到此消息：
2017-04-04 19:28:47.546 31726 ERROR nova.compute.manager [req-af37e2ee-0ef9-4d4e-b3ce-d7a1bf27a780 - - - - -] [instance: 6ecaf72c-88bc-4f26-8907-dc19d7924327] An error occurred while refreshing the network cache.
2017-04-04 19:28:47.546 31726 ERROR nova.compute.manager [instance: 6ecaf72c-88bc-4f26-8907-dc19d7924327] Traceback (most recent call last):
2017-04-04 19:28:47.546 31726 ERROR nova.compute.manager [instance: 6ecaf72c-88bc-4f26-8907-dc19d7924327] File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 5766, in _heal_instance_info_cache
2017-04-04 19:28:47.546 31726 ERROR nova.compute.manager [instance: 6ecaf72c-88bc-4f26-8907-dc19d7924327] self.network_api.get_instance_nw_info(context, instance)
2017-04-04 19:28:47.546 31726 ERROR nova.compute.manager [instance: 6ecaf72c-88bc-4f26-8907-dc19d7924327] File "/usr/lib/python2.7/dist-packages/nova/network/api.py", line 369, in get_instance_nw_info
2017-04-04 19:28:47.546 31726 ERROR nova.compute.manager [instance: 6ecaf72c-88bc-4f26-8907-dc19d7924327] …使用 Buildship 3.1.2 运行 Eclipse 2019-06。从现有文件夹创建一个项目，并在添加 gradle 性质时，Eclipse 做了一些工作，然后卡在“导入根项目：运行构建”上。已经删除并重新安装了 Gradle，删除并重新安装了 Buildship，删除了 ~/.gradle 和 /.gradle 文件，尝试同时使用 Gradle 包装器和当前版本的 Gradle（5.6.2）。.metadata/.log 帮助文件中没有任何内容。