Ambari-metrics-storm-sink-legacy:jar:2.7.5.0.0

Understanding ambari-metrics-storm-sink-legacy:jar:2.7.5.0.0

The ambari-metrics-storm-sink-legacy:jar:2.7.5.0.0 is a component in the Apache Ambari ecosystem. It plays a critical role in monitoring and managing Apache Storm metrics, ensuring the efficient collection, processing, and visualization of performance data for Storm clusters. This article provides an overview of the legacy version, its functionality, and its role within the broader Apache Ambari Metrics System.

What is Ambari Metrics System?

Apache Ambari Metrics System (AMS) is a monitoring and alerting framework designed to track the performance of various Hadoop ecosystem components, including HDFS, YARN, Hive, and Storm. AMS collects metrics, stores them in a time-series database, and provides a user interface for visualization.

Role of ambari-metrics-storm-sink-legacy

The ambari-metrics-storm-sink-legacy JAR file acts as a sink for Storm metrics within the AMS framework. A sink is responsible for consuming and exporting metrics data from the source—in this case, Apache Storm—and sending it to the Ambari Metrics Collector.

Key Features:

1. Legacy Support: As indicated by “legacy,” this JAR file is designed to work with older versions of Apache Storm and Ambari Metrics systems, ensuring backward compatibility.
2. Metric Collection: Captures real-time metrics such as throughput, latency, and error rates from Storm topologies.
3. Data Transmission: Transfers collected metrics to the Ambari Metrics Collector for storage and visualization.
4. Integration: Seamlessly integrates with Ambari to provide centralized monitoring and dashboard capabilities for Storm clusters.

How It Works

1. Configuration:
   • The storm.yaml file is configured to include the ambari-metrics-storm-sink-legacy JAR as a metrics sink.
   • Example configuration:
     yaml

     Copy code

     metrics.reporters:
- class: org.apache.hadoop.metrics2.sink.storm.AmbariMetricsStormSink
cluster: "storm_cluster"
collector_host: "metrics-collector-host"
port: 6188

2. Data Flow:
   • Apache Storm generates metrics for its various components (spouts, bolts, workers).
   • The metrics sink collects this data and transmits it to the Ambari Metrics Collector.
   • Data is stored in a time-series database for later retrieval and analysis.
3. Visualization:
   • Metrics are visualized through Ambari’s web-based dashboard, offering insights into Storm’s performance and health.

Version Details: 2.7.5.0.0

The version 2.7.5.0.0 corresponds to a specific release in the Ambari ecosystem. It includes:

• Bug fixes for legacy metrics sinks.
• Performance optimizations for better metric collection.
• Compatibility with Apache Storm and Ambari versions available at the time of release.

Why Use the Legacy Version?

Organizations using older versions of Apache Ambari or Apache Storm may rely on the legacy metrics sink to maintain compatibility without upgrading their entire stack. This ensures a stable environment for existing applications while benefiting from Ambari’s monitoring features.

Conclusion

The ambari-metrics-storm-sink-legacy:jar:2.7.5.0.0 is a vital component for monitoring Apache Storm in legacy environments. By bridging the gap between Storm metrics and the Ambari Metrics System, it allows organizations to maintain visibility into their cluster performance while leveraging the reliability and simplicity of the Ambari ecosystem. For optimal use, it is essential to configure the sink correctly and ensure compatibility with your system’s version.