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Deprecated HTTPServer constructors. Refactored TestHTTPServer to use …

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Deprecated `HTTPServer` constructors. Refactored `TestHTTPServer` to use `HTTPServer.Builder` Signed-off-by: Doug Hoard

dhoard

Fix the situation where metric collection stops when NPE occours

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We use `Prometheus` to monitor `Alluxio` system metrics. When some metrics are empty for various reasons, the system no longer monitors the metrics. We can catch this exception, so as...

codings-dan

Adds ability to exclude deadlocked threads from exported metrics

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Finding deadlocked threads might be an expensive operation if there are a large number of threads in the jvm since it requires a safepoint.

askoog

#576 add SafepointExports

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seems that the management API has been around since at least JDK 6 (http://srcrr.com/java/oracle/openjdk/6/reference/sun/management/HotspotRuntimeMBean-source.html)

mr-git

Provide JVM Mixin.

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This proposes a [monitoring mixing](https://monitoring.mixins.dev/) based on the dashboard https://grafana.com/grafana/dashboards/3066 by @jotak. The datasource is templated in addition to the original dashboard. Outstanding: - [ ] Alerts - [ ]...

jeschkies

hotspot provide unregistry all collector

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https://github.com/prometheus/client_java/blob/master/simpleclient_hotspot/src/main/java/io/prometheus/client/hotspot/DefaultExports.java#L36 here, I can registry jvm metrics to the defaultRegistry,but sometimes I want to custom some metrics that name are same as jvm metrics.So I will encounter the error like...

yangtaoran

Split package in simpleclient.servlet and simpleclient.pushgateway

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Modules `simpleclient.servlet` and `simpleclient.pushgateway` are exporting classes from the same package `io.prometheus.client.exporter` causing troubles when building Java modular applications due to a split package error: `java: the unnamed module reads...

agavrilov76

Use of ThreadLocal storage in HTTPServer seems resulting in inefficient memory allocation

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### Disclaimer I might be missing something in the design of the class (I'm sorry if this is the case), and yet I think it's worth checking and possibly suggest...

gvisco

Add log4j2 annotation processor so packages is not required

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Currently it's necessary to pass the `packages` attributes via `` in log4j configuration to discover the appender. That means relying on step 5 of https://logging.apache.org/log4j/2.x/manual/plugins.html for appender discovery (analyzing packages...

rquinio1A

Deprecate public HTTPServer constructors/Recommend using HTTPServer.Builder

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**Description** Deprecate public `HTTPServer` constructors and recommend using `HTTPServer.Builder` **Background** As part of recent work, an `HTTPServer.Builder` class was added to build `HTTPServer` instances. `HTTPServer` has multiple constructors which can...

dhoard