Azkaban Executor 设置任务并行度

近期需求，想对Azkaban当前运行的最大flow数有所控制。flow中可以包含多个job。（默认读者熟悉azkaban）

查到官网配置文件： azkaban.github.io/azkaban/doc…

在Azkaban executor的conf/azkaban.properties中配置：

executor.flow.threads 当前可以运行的flow的数量。默认为30 flow.num.job.threads 每个flow中并发运行的job数。默认为10

Executor Server Properties

Parameter	Description	Default
executor.port	The port for azkaban executor server	12321
executor.global.properties	A path to the properties that will be the parent for all jobs.	none
azkaban.execution.dir	The folder for executing working directories	executions
azkaban.project.dir	The folder for storing temporary copies of project files used for executions	projects
executor.flow.threads	The number of simulateous flows that can be run. These threads are mostly idle.	30
job.log.chunk.size	For rolling job logs. The chuck size for each roll over	5MB
job.log.backup.index	The number of log chunks. The max size of each logs is then the index * chunksize	4
flow.num.job.threads	The number of concurrent running jobs in each flow. These threads are mostly idle.	10
job.max.Xms	The maximum initial amount of memory each job can request. If a job requests more than this, then Azkaban server will not launch this job	1GB
job.max.Xmx	The maximum amount of memory each job can request. If a job requests more than this, then Azkaban server will not launch this job	2GB
azkaban.server.flow.max.running.minutes	The maximum time in minutes a flow will be living inside azkaban after being executed. If a flow runs longer than this, it will be killed. If smaller or equal to 0, there's no restriction on running time.	-1

MySQL Connection Parameter

Parameter	Description	Default
database.type	The database type. Currently, the only database supported is mysql.	mysql
mysql.port	The port to the mysql db	3306
mysql.host	The mysql host	localhost
mysql.database	The mysql database
mysql.user	The mysql user
mysql.password	The mysql password
mysql.numconnections	The number of connections that Azkaban web client can open to the database	100