Hadoop的etl任务—flume使用及其优化-品友互动

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1. Flume is a distributed system for collecting, aggregating, and moving large amounts of log data. It has a simple and flexible architecture based on streaming data flows. 2. Flume supports reliable transport of log data from diverse sources to centralized data stores like HDFS. It can import data from social networks, web servers, and other applications. 3. The document discusses key Flume concepts like sources, sinks, and agents and how they can be configured using decorators to batch, compress, and checksum events for reliable data transport.

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Hadoop ETL
—Flume

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Web Web
Log
Server Server

Web Web
Server Server

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——Scribe

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——Chukwa

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——Flume

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——Flume

• Flume

-Nodes
-Nodes Source Sink
-Nodes

-
- Sources Sinks
- Nodes

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——Flume

• Flume

1.Flume
- Source Sink APIs
-
- Sources Sinks
Decorators

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——Flume

• Flume

2.Connector
-Sources
Console Exec Syslog Scribe IRC Twitter
-Sinks
Console Local files HDFS S3
-Decorators
Sinks
Wire batching compression sampling throughput
throttling

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——Flume

• Flume

3.

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——Flume

• Flume

1. agentBESink

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——Flume

• Flume

2. agentDFOSink

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——Flume

• Flume

3. agentE2ESink

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——Flume

• Flume
1.

-Web Page

-Flume Shell

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——Flume

• Flume
2.

Configuring FlumeNode:
tail(“file”) | filter [ console, roll(1000)
{ dfs(“hdfs://namenode/user/flume”) } ] ;

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– Why Flume?

Scribe Server Scribe Server Scribe Server
Scribe Store Scribe server

Agent Collector
Chukwa

Agent Collector Collector Store
Flume 3

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– Why Flume?

Agent Thrift Client
Scribe Collector Thrift server

Chukwa Agents Collectors

Agents Collector Decorators
Flume

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– Why Flume?

Scribe

Chukwa

Flume Web Flume Shell

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– Why Flume?

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Flume

1.Master

2.Collector

3.HDFS Small Files

4.

5.CPU

6.

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Flume

• Master

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Flume

• Collector

1.Agents Collectors

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Flume

• Collector

2. failover
Collector
Collector

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Flume

• HDFS small files
HDFS

- NameNode

- Map

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Flume

• HDFS small files

• CollectorSink rollmillis
• flume-site.xml flume.collector.roll.millis

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Flume

•

1. Batch
- batch(n,maxlatency) Decorator Event

batch customdfs

- Agent batch Collector
unbatch Event Event

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Flume

•

2.Compression
- gzip Decorator Event

- batch

batch gzip customdfs

- Agent gzip Collector
gunzip Event
gzip 80%

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Flume

•

3. checksum
- Collector Checksum
Checksum

- Checksum 33%

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Flume

• CPU
TailDirSource CPU
- 200ms
- CPU

-

-

- Log

CPU 2/3

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Flume

•
TailDirSource
-TailDirSource Direct Buffer

MaxDirectMemorySize Direct Memory

1/2

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Hadoop Redis Hbase Hive Pig
Oozie Ganglia Flume Lucene LIBSVM
Mahout Zookeeper…………
Zookeeper…………

Optimus Folo8

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Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place. Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects. Here’s what you’ll gain: - Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows. - Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy. - Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency. - Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity. We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic. Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.

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