spaklion.blogg.se - Cannot open linkedin profile offline

#Cannot open linkedin profile offline code#
#Cannot open linkedin profile offline Offline#
#Cannot open linkedin profile offline windows#

#Cannot open linkedin profile offline code#

However, if you think that such a thing won't add much value and would be an overhead to maintain as the code base goes through changes then that's completely understandable too 🙂

A Cruise Control-side issue with consuming metrics from the relevant internal topic (e.g.

A broker-side issue with producing metrics by Cruise Control metrics reporter to the relevant internal topic, or.

If this is the case, give the CC instance some time (e.g. a cold start), and it hasn't had enough time to collect samples to generate a cluster model.

Cruise Control instance has just been started upon a first time setup (i.e.

This could be happening due to three reasons:

#Cannot open linkedin profile offline windows#

NotEnoughValidWindowsException - Not Enough Windows Available in Range Resolution ResolutionĮnsure that this topic exists in the cluster and metrics are bring written to it.īy setting to "true" in the Kafka cluster's configs, Kafka will automatically create this topic. Without the cluster model, CC will not be able to perform administrative tasks like partition rebalancing or broker removal. CC uses that topic to read metrics about the cluster to generate the cluster's load model and monitor it. This normally means that CC could not find the metrics reporter topic which is configured via the conifg and defaults to _CruiseControlMetrics topic in the Kafka cluster. For example, a Troubleshooting section in the wiki like so: Troubleshooting ERROR _metricConsumer returned null for _metricReporterTopic _CruiseControlMetrics I'm not sure if there already exists a wiki document or a runbook containing some of the common Cruise Control errors, what they mean and how they can be resolved but would you be open to having such a thing in the wiki section? I have been maintaining a list of some of the exceptions I have seen so far and how those were resolved and I'd be happy to contribute to it. While going through some of the previous issues, I noticed that there were some duplicates.

#Cannot open linkedin profile offline Offline#

Keeping this in mind, would it be fair to assume that the fix_offline_replicas endpoint would not work in case of offline partitions but would only work when there are offline replicas?įinally, I had a general suggestion. Releases with 2.0.*, 2.4.*, and 2.5.*) are compatible with Kafka 1.1 or if they are only compatible with the corresponding Kafka versions? I also noticed that more recent branches of Cruise Control have a PrometheusMetricSampler component which isn't available in the kafka_0_11_and_1_0 branch that I am using. Do you think it would be a good idea to have a custom metric sampler implementation that first tries fetching the metrics from the Kafka topics and falls back to Prometheus in case the topics' partitions are offline? The idea of fetching metrics from Prometheus sounds like it would add more resiliency to Cruise Control deployments. Hope it thanks for the response and those suggestions for running Cruise Control for production clusters! if brokers hosting all 3 replicas of a partition are destroyed, the data would be inaccessible. not just offline replicas) in the system, then recovering failed partitions would not be possible with any system - e.g. Note that if there are offline partitions (i.e. For example, ReplicaDistributionGoal uses purely the "topology" information derived from Kafka metadata, and can be used. when CC is unable to collect metrics from the cluster for an extended period of time, its goals that does not require cluster load information can still be used.An example recommended config that collects 1-week history for partitions would be (1) =300000, (2) =3600000, (3) =168 In production clusters, I would recommend having a history of at least a couple days. This period of time depends on how long your partition history is configured to (please see, , and ). when Cruise Control (CC) is unable to collect metrics from the cluster for a short period of time, it would still be functional for self-healing with all its goal.

You may consider using (1) a metric sampler that fetches metrics from a Prometheus server (if you have one) and (2) sample store that uses an external store. _CruiseControlMetrics, _KafkaCruiseControlPartitionMetricSamples, _KafkaCruiseControlPartitionMetricSamples). (1) Metric Sampler and (2) Sample Store are pluggable components that come with default implementations, which use Kafka topics (e.g. Thanks for the detailed explanation of the issue.