如何在EMR群集boostrap上设置livy.server.session.timeout?

问题描述

我正在创建一个EMR集群，并使用jupyter Notebook运行一些spark任务.我的任务在执行大约1小时后死亡，错误是:

I am creating an EMR cluster, and using jupyter notebook to run some spark tasks.My tasks die after approximately 1 hour of execution, and the error is:

An error was encountered:
Invalid status code '400' from https://xxx.xx.x.xxx:18888/sessions/0/statements/20 with error payload: "requirement failed: Session isn't active."

我的理解是它与Livy配置livy.server.session.timeout有关，但是我不知道如何在集群的引导程序中进行设置(我需要在引导程序中进行设置，因为集群是使用没有ssh访问权限)

My understanding is that it is related to the Livy config livy.server.session.timeout, but I don't know how I can set it in the bootstrap of the cluster (I need to do it in the bootstrap because the cluster is created with no ssh access)

非常感谢

推荐答案

在EMR上，livy-conf是livy的livy.conf文件属性的分类，因此在创建EMR群集时，请选择Livy为advanced options选择安装的应用程序，请在Enter Configuration字段中传递此EMR配置.

On EMR, livy-conf is the classification for the properties for livy's livy.conf file, so when creating an EMR cluster, choose advanced options with Livy as an application chosen to install, please pass this EMR configuration in the Enter Configuration field.

[{'classification': 'livy-conf','Properties': {'livy.server.session.timeout':'5h'}}]

• 在EMR上，livy二进制文件位于/etc/livy/，因此配置文件位于/etc/livy/conf/livy.conf
• On EMR, Livy binary is located at /etc/livy/, and so the config file is at /etc/livy/conf/livy.conf

要验证这一点，

• 使用已知的ec2 key-pair，Livy及更高版本的配置创建EMR集群
• 使用ec2 key-pair，登录与集群ssh -i some-ec2-key-pair.pem [email protected]关联的EC2主节点.
• 导航至/etc/livy/conf，vim livy.conf&查看livy.server.session.timeout
的更新值
• Create an EMR cluster with a known ec2 key-pair, Livy and above config
• Using the ec2 key-pair, login to the EC2 Master node associated with the cluster ssh -i some-ec2-key-pair.pem [email protected]
• Navigate to /etc/livy/conf, vim livy.conf & see the updated value of livy.server.session.timeout

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