[FLINK-4396] GraphiteReporter class not found at startup of jobmanager

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1.1
• Fix Version/s: 1.2.0, 1.3.0
• Component/s: Build System, Runtime / Metrics

Environment

Windows and Unix

• Assignee: Chesnay Schepler
• Reporter: RWenden
• Created: 15/Aug/16 12:41
• Updated: 24/Jan/17 09:58
• Resolved: 24/Jan/17 09:57

Description

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.

Issue Links

• links to: GitHub Pull Request #3116