Question

我正在运行Cassandra和opscenter代理，当Opscenter尝试获取常规和CF指标时，日志中出现以下错误。

INFO [jmx-metrics-1] 2015-08-02 21:55:20,555 New JMX connection (127.0.0.1:7199)
INFO [jmx-metrics-1] 2015-08-02 21:55:20,558 New JMX connection (127.0.0.1:7199)
ERROR [jmx-metrics-2] 2015-08-02 21:55:25,448 Error getting CF metrics
java.lang.UnsupportedOperationException: nth not supported on this type: PersistentArrayMap
at clojure.lang.RT.nthFrom(RT.java:857)
at clojure.lang.RT.nth(RT.java:807)
at opsagent.rollup$process_metric_map.invoke(rollup.clj:252)
at opsagent.metrics.jmx$cf_metric_helper.invoke(jmx.clj:96)
at opsagent.metrics.jmx$start_pool$fn__15320.invoke(jmx.clj:159)
at clojure.lang.AFn.run(AFn.java:24)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
ERROR [jmx-metrics-4] 2015-08-02 21:56:26,238 Error getting general metrics
java.lang.UnsupportedOperationException: nth not supported on this type: PersistentHashMap
at clojure.lang.RT.nthFrom(RT.java:857)
at clojure.lang.RT.nth(RT.java:807)
at opsagent.rollup$process_metric_map.invoke(rollup.clj:252)
at opsagent.metrics.jmx$generic_metric_helper.invoke(jmx.clj:73)
at opsagent.metrics.jmx$start_pool$fn__15334$fn__15335.invoke(jmx.clj:171)
at opsagent.metrics.jmx$start_pool$fn__15334.invoke(jmx.clj:170)
at clojure.lang.AFn.run(AFn.java:24)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

知道UnsupportedOperationException是关于什么的吗？我不熟悉Clojure，但我不知道为什么a）错误发生了b）nth不支持PersistentArrayMap的原因。

请帮助，谢谢。

Answer 1

这是代理程序在运行时更改后发生的错误（已修复但尚未发布）。您可以尝试重新启动代理，因为初始加载配置是正确的。

当opscenterd将群集配置推送到代理时，可能会发生这种情况。要解决此问题，直到下一个版本，您可以在代理本地address.yaml中进行任何群集配置更改，并将其从opscenter服务器上的clustername.conf中删除。我建议首先尝试重新启动代理，因为这可能会对很多节点产生一些影响。

使用PersistentHashMap的Opsagent UnsupportedOperationException

1 个答案: