How often is the warning logged? The default reporting interval is 10
seconds, if a report is interrupted it can take a while for metrics to
show up.
Could this also be caused by the MAX_CREATES_PER_MINUTE setting in
carbon.conf being set too low?
On 13.08.2018 21:31, John O wrote:
I have tried two reporter types (Graphite, JMX)
Graphite
metrics.reporters: grph
metrics.reporter.grph.class:
org.apache.flink.metrics.graphite.GraphiteReporter
metrics.reporter.grph.host: xxxxxxxxxxxxxxxx
metrics.reporter.grph.port: 2003
metrics.reporter.grph.protocol: TCP
What I see on graphite are incomplete metrics. Some taskIdx (same
process) will show different sets of metrics. For example,
-Sink->test
-0: currentInputWatermark, numRecordsIn
-1: numRecordsOutPerSecond
-2: numRecordsIn, numRecordsOut
-4: currentInputWatermark
I would expect seeing
-Sink->test
-0: currentInputWatermark, numRecordsIn, numRecordsOut,
numRecordsOutPerSecond, numRecordsInPerSecond…
-1: currentInputWatermark, numRecordsIn, numRecordsOut,
numRecordsOutPerSecond, numRecordsInPerSecond…
-2: currentInputWatermark, numRecordsIn, numRecordsOut,
numRecordsOutPerSecond, numRecordsInPerSecond…
-4: currentInputWatermark, numRecordsIn, numRecordsOut,
numRecordsOutPerSecond, numRecordsInPerSecond…
JMX
metrics.reporters: jmx
metrics.reporter.jmx.class: org.apache.flink.metrics.jmx.JMXReporter
metrics.reporter.jmx.port: 8789
I used visualvm with mbean explorer to view the exposed mbeans.
In this setup, I do see the expected metrics but the organization
makes it difficult to find
I also get the following WARNing
2018-08-09 18:36:55,943 WARN
org.apache.flink.runtime.metrics.MetricRegistryImpl - Error while
reporting metrics
java.util.ConcurrentModificationException
at
java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:719)
at
java.util.LinkedHashMap$LinkedKeyIterator.next(LinkedHashMap.java:742)
at
java.util.AbstractCollection.addAll(AbstractCollection.java:343)
at java.util.HashSet.<init>(HashSet.java:120)
at
org.apache.kafka.common.internals.PartitionStates.partitionSet(PartitionStates.java:65)
at
org.apache.kafka.clients.consumer.internals.SubscriptionState.assignedPartitions(SubscriptionState.java:298)
at
org.apache.kafka.clients.consumer.internals.ConsumerCoordinator$ConsumerCoordinatorMetrics$1.measure(ConsumerCoordinator.java:906)
at
org.apache.kafka.common.metrics.KafkaMetric.value(KafkaMetric.java:61)
at
org.apache.kafka.common.metrics.KafkaMetric.value(KafkaMetric.java:52)
at
org.apache.flink.streaming.connectors.kafka.internals.metrics.KafkaMetricWrapper.getValue(KafkaMetricWrapper.java:37)
at
org.apache.flink.streaming.connectors.kafka.internals.metrics.KafkaMetricWrapper.getValue(KafkaMetricWrapper.java:27)
at
org.apache.flink.dropwizard.metrics.FlinkGaugeWrapper.getValue(FlinkGaugeWrapper.java:36)
at
com.codahale.metrics.graphite.GraphiteReporter.reportGauge(GraphiteReporter.java:279)
at
com.codahale.metrics.graphite.GraphiteReporter.report(GraphiteReporter.java:169)
at
org.apache.flink.dropwizard.ScheduledDropwizardReporter.report(ScheduledDropwizardReporter.java:231)
at
org.apache.flink.runtime.metrics.MetricRegistryImpl$ReporterTask.run(MetricRegistryImpl.java:427)
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:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
I am using flink 1.5.1
J.
*From:*Chesnay Schepler <ches...@apache.org>
*Sent:* Friday, August 10, 2018 2:08 AM
*To:* John O <son...@samsung.com>; user@flink.apache.org
*Subject:* Re: flink telemetry/metrics
What is wrong with the metrics that are shown in graphite?
Can you provide us with the metrics section of your flink-conf.yaml?
Are there any metric-related warnings in the TaskManager logs?
On 09.08.2018 01:38, John O wrote:
I’m working on getting a flink job into production. As part of the
production requirement, I need telemetry/metrics insight into my
flink job. I have followed instructions in
https://ci.apache.org/projects/flink/flink-docs-release-1.5/monitoring/metrics.html
- Added the flink graphite jar to taskmanager/jobmanager lib folder
- confligured flink-conf.yaml to enable graphite reporter
- Added a simple counter in my flink code
When I submit the job, I can see my counter show up in the flink
web ui’s Task Metrics section. But the counter does not show up in
Graphite. Also, the metrics that actually make it to Graphite
doesn’t seems like it’s published properly.
Is anyone actually using Graphite Reporter? What is your
experience? What am I missing?
