RWenden created FLINK-4396:
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Summary: MetricRegistry class not found at startup of jobmanager
Key: FLINK-4396
URL: https://issues.apache.org/jira/browse/FLINK-4396
Project: Flink
Issue Type: Bug
Components: Build System
Affects Versions: 1.1.1
Environment: Windows and Unix
Reporter: RWenden
Fix For: 1.1.2
For Flink 1.1.1 we configured Graphite metrics settings on the flink-conf.yaml
(for job manager (and taskmanager)).
We see the following error in the log:
2016-08-15 14:20:34,167 ERROR org.apache.flink.runtime.metrics.MetricRegistry
- Could not instantiate metrics reportermy_reporter. Metrics might
not be exposed/reported.
java.lang.ClassNotFoundException:
org.apache.flink.metrics.graphite.GraphiteReporter
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at
org.apache.flink.runtime.metrics.MetricRegistry.<init>(MetricRegistry.java:119)
We found out that this class is not packaged inside flink-dist_2.11-1.1.1.jar.
Long story short: we had to install/provide the following jars into the lib
folder to make Graphite metrics to work:
flink-metrics-graphite-1.1.1.jar
flink-metrics-dropwizard-1.1.1.jar
metrics-graphite-3.1.0.jar (from dropwizard)
We think these libraries (and the ones for Ganglia,StatsD,...) should be
included in flink-dist_2.11-1.1.1.jar, for these are needed at manager startup
time.
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