tree: d9f3bc5ba3cc994afc7343b375a195c319c3829b [path history] [tgz]
  1. README.md
  2. pom.xml
  3. src/
external/storm-opentsdb/README.md

Storm OpenTSDB Bolt and TridentState

OpenTSDB offers a scalable and highly available storage for time series data. It consists of a Time Series Daemon (TSD) servers along with command line utilities. Each TSD connects to the configured HBase cluster to push/query the data.

Time series data point consists of:

  • a metric name.
  • a UNIX timestamp (seconds or milliseconds since Epoch).
  • a value (64 bit integer or single-precision floating point value).
  • a set of tags (key-value pairs) that describe the time series the point belongs to.

Storm bolt and trident state creates the above time series data from a tuple based on the given TupleMetricPointMapper

This module provides core Storm and Trident bolt implementations for writing data to OpenTSDB.

Time series data points are written with at-least-once guarantee and duplicate data points should be handled as mentioned here in OpenTSDB.

Examples

Core Bolt

Below example describes the usage of core bolt which is org.apache.storm.opentsdb.bolt.OpenTsdbBolt


OpenTsdbClient.Builder builder = OpenTsdbClient.newBuilder(openTsdbUrl).sync(30_000).returnDetails(); final OpenTsdbBolt openTsdbBolt = new OpenTsdbBolt(builder, Collections.singletonList(TupleOpenTsdbDatapointMapper.DEFAULT_MAPPER)); openTsdbBolt.withBatchSize(10).withFlushInterval(2000); topologyBuilder.setBolt("opentsdb", openTsdbBolt).shuffleGrouping("metric-gen");

Trident State


final OpenTsdbStateFactory openTsdbStateFactory = new OpenTsdbStateFactory(OpenTsdbClient.newBuilder(tsdbUrl), Collections.singletonList(TupleOpenTsdbDatapointMapper.DEFAULT_MAPPER)); TridentTopology tridentTopology = new TridentTopology(); final Stream stream = tridentTopology.newStream("metric-tsdb-stream", new MetricGenSpout()); stream.peek(new Consumer() { @Override public void accept(TridentTuple input) { LOG.info("########### Received tuple: [{}]", input); } }).partitionPersist(openTsdbStateFactory, MetricGenSpout.DEFAULT_METRIC_FIELDS, new OpenTsdbStateUpdater());

License

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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