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azkaban使用

發布時間:2023/12/6 编程问答 31 豆豆
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新建一個text文件,a.job,打包成zip包傳到azkaban即可

?

方式1:job流?

?1. a.job內容范例:

type=command command=hive shell command=hive -e 'set hive.execution.engine=tez;' command=hive -e 'select * from hivedb.t_user limit 5;'

2.寫法2:

zip包里放job和sql文件,如圖

vip_ods.job:

type=command command=hive -f vip_ods.sql

vip_ods.sql:

use hivedb; insert overwrite table hive_tb1 SELECT id,name from user; insert overwrite table hive_tb2 SELECT id,name from food;

以下是依賴關系闡述: 第二個job:bar.job依賴foo.job

# bar.job type=command dependencies=foo command=echo bar

?

方式2:flow流

以下摘自官網

Creating Flows

This section covers how to create your Azkaban flows using Azkaban Flow 2.0. Flow 1.0 will be deprecated in the future.

Flow 2.0 Basics

Step 1:

Create a simple file called?flow20.project. Add?azkaban-flow-version?to indicate this is a Flow 2.0 Azkaban project:

azkaban-flow-version: 2.0

Step 2:

Create another file called?basic.flow. Add a section called?nodes, which will contain all the jobs you want to run. You need to specify?name?and?type?for all the jobs. Most jobs will require the?config?section as well. We will talk more about it later. Below is a simple example of a command job.

nodes:- name: jobA type: command config: command: echo "This is an echoed text."

Step 3:

Select the two files you’ve already created and right click to compress them into a zip file called?Archive.zip. You can also create a new directory with these two files and then?cd?into the new directory and compress:?zip?-r?Archive.zip?.?Please do not zip the new directory directly.

Make sure you have already created a project on Azkaban ( See?Create Projects?). You can then upload Archive.zip to your project through Web UI ( See?Upload Projects?).

Now you can click?Execute?Flow?to test your first Flow 2.0 Azkaban project!

Job Dependencies

Jobs can have dependencies on each other. You can use?dependsOn?section to list all the parent jobs. In the below example, after jobA and jobB run successfully, jobC will start to run.

nodes:- name: jobC type: noop # jobC depends on jobA and jobB dependsOn: - jobA - jobB - name: jobA type: command config: command: echo "This is an echoed text." - name: jobB type: command config: command: pwd

You can zip the new?basic.flow?and?flow20.project?again and then upload to Azkaban. Try to execute the flow and see the difference.

Job Config

Azkaban supports many job types. You just need to specify it in?type, and other job-related info goes to?config?section in the format of?key:?value?pairs. Here is an example for a Pig job:

nodes:- name: pigJob type: pig config: pig.script: sql/pig/script.pig

You need to write your own pig script and put it in your project zip and then specify the path for the pig.script in the config section.

Flow Config

Not only can you configure individual jobs, you can also config the flow parameters for the entire flow. Simply add a?config?section at the beginning of the?basic.flow?file. For example:

--- config:user.to.proxy: foo failure.emails: noreply@foo.com nodes: - name: jobA type: command config: command: echo "This is an echoed text."

When you execute the flow, the?user.to.proxy?and?failure.emails?flow parameters will apply to all jobs inside the flow.

Embedded Flows

Flows can have subflows inside the flow just like job nodes. To create embedded flows, specify the type of the node as?flow. For example:

nodes:- name: embedded_flow type: flow config: prop: value nodes: - name: jobB type: noop dependsOn: - jobA - name: jobA type: command config: command: pwd

Download Examples

You can download the simple Flow 2.0 project zip examples to start playing with Azkaban:

  • basicFlow20Project.zip
  • embeddedFlow20Project.zip

?

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