codelipenghui commented on issue #3112: broker error for prometheus metrics URL: https://github.com/apache/pulsar/issues/3112#issuecomment-555062872 Seems the problem can still happens, but i can't get the restful response, broker is crashed at that time. ``` 21:23:33.629 [prometheus-stats-39-1] ERROR org.apache.pulsar.broker.stats.prometheus.PrometheusMetricsServlet - Failed to generate prometheus stats org.eclipse.jetty.io.EofException: null at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:283) ~[org.eclipse.jetty-jetty-io-9.4.20.v20190813.jar:9.4.20.v20190813] at org.eclipse.jetty.io.WriteFlusher.flush(WriteFlusher.java:422) ~[org.eclipse.jetty-jetty-io-9.4.20.v20190813.jar:9.4.20.v20190813] at org.eclipse.jetty.io.WriteFlusher.write(WriteFlusher.java:277) ~[org.eclipse.jetty-jetty-io-9.4.20.v20190813.jar:9.4.20.v20190813] at org.eclipse.jetty.io.AbstractEndPoint.write(AbstractEndPoint.java:381) ~[org.eclipse.jetty-jetty-io-9.4.20.v20190813.jar:9.4.20.v20190813] at org.eclipse.jetty.server.HttpConnection$SendCallback.process(HttpConnection.java:818) ~[org.eclipse.jetty-jetty-server-9.4.20.v20190813.jar:9.4.20.v20190813] at org.eclipse.jetty.util.IteratingCallback.processing(IteratingCallback.java:241) ~[org.eclipse.jetty-jetty-util-9.4.20.v20190813.jar:9.4.20.v20190813] at org.eclipse.jetty.util.IteratingCallback.iterate(IteratingCallback.java:223) ~[org.eclipse.jetty-jetty-util-9.4.20.v20190813.jar:9.4.20.v20190813] at org.eclipse.jetty.server.HttpConnection.send(HttpConnection.java:549) ~[org.eclipse.jetty-jetty-server-9.4.20.v20190813.jar:9.4.20.v20190813] at org.eclipse.jetty.server.HttpChannel.sendResponse(HttpChannel.java:857) ~[org.eclipse.jetty-jetty-server-9.4.20.v20190813.jar:9.4.20.v20190813] at org.eclipse.jetty.server.HttpChannel.write(HttpChannel.java:929) ~[org.eclipse.jetty-jetty-server-9.4.20.v20190813.jar:9.4.20.v20190813] at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:250) ~[org.eclipse.jetty-jetty-server-9.4.20.v20190813.jar:9.4.20.v20190813] at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:226) ~[org.eclipse.jetty-jetty-server-9.4.20.v20190813.jar:9.4.20.v20190813] at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:546) ~[org.eclipse.jetty-jetty-server-9.4.20.v20190813.jar:9.4.20.v20190813] at org.apache.pulsar.broker.stats.prometheus.PrometheusMetricsGenerator.generate(PrometheusMetricsGenerator.java:78) ~[org.apache.pulsar-pulsar-broker-2.5.0-d3cb10859.jar:2.5.0-d3cb10859] at org.apache.pulsar.broker.stats.prometheus.PrometheusMetricsServlet.lambda$doGet$0(PrometheusMetricsServlet.java:70) ~[org.apache.pulsar-pulsar-broker-2.5.0-d3cb10859.jar:2.5.0-d3cb10859] at org.apache.bookkeeper.mledger.util.SafeRun$1.safeRun(SafeRun.java:32) [org.apache.pulsar-managed-ledger-2.5.0-d3cb10859.jar:2.5.0-d3cb10859] at org.apache.bookkeeper.common.util.SafeRunnable.run(SafeRunnable.java:36) [org.apache.bookkeeper-bookkeeper-common-4.9.2.jar:4.9.2] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_171] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_171] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) [?:1.8.0_171] at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) [?:1.8.0_171] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_171] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_171] at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [io.netty-netty-common-4.1.43.Final.jar:4.1.43.Final] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_171] Caused by: java.io.IOException: Broken pipe at sun.nio.ch.FileDispatcherImpl.writev0(Native Method) ~[?:1.8.0_171] at sun.nio.ch.SocketDispatcher.writev(SocketDispatcher.java:51) ~[?:1.8.0_171] at sun.nio.ch.IOUtil.write(IOUtil.java:148) ~[?:1.8.0_171] at sun.nio.ch.SocketChannelImpl.write(SocketChannelImpl.java:504) ~[?:1.8.0_171] at org.eclipse.jetty.io.ChannelEndPoint.flush(ChannelEndPoint.java:263) ~[org.eclipse.jetty-jetty-io-9.4.20.v20190813.jar:9.4.20.v20190813] ... 24 more ```
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