<?xml version="1.0" encoding="UTF-8"?>
<workflow-app xmlns="uri:oozie:workflow:0.5" name="shell-wf">
<start to="fork_node" />
<fork name = "fork_node">
<path start = "query1"/>
<path start = "query2"/>
</fork>
<action name="query1">
<shell xmlns="uri:oozie:shell-action:0.1">
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>${queueName}</value>
</property>
</configuration>
<exec>oozie.sh</exec>
<file>oozie.sh#oozie.sh</file>
<capture-output />
</shell>
<ok to="join_node" />
<error to="postgre"/>
</action>
<action name="query2">
<shell xmlns="uri:oozie:shell-action:0.1">
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>${queueName}</value>
</property>
</configuration>
<exec>oozie2.sh</exec>
<file>oozie2.sh#oozie2.sh</file>
<capture-output />
</shell>
<ok to="join_node" />
<error to="postgre" />
</action>
<join name = "join_node" to = "postgre"/>
<action name="postgre">
<shell xmlns="uri:oozie:shell-action:0.1">
<job-tracker>${jobTracker}</job-tracker>
<name-node>${nameNode}</name-node>
<configuration>
<property>
<name>mapred.job.queue.name</name>
<value>${queueName}</value>
</property>
</configuration>
<exec>oozie3.sh</exec>
<file>oozie3.sh#oozie3.sh</file>
<capture-output />
</shell>
<ok to="decesion-node" />
<error to="fail" />
</action>
<decision name="decesion-node">
<switch>
<case to="end">
${wf:lastErrorNode()} eq ""
</case>
<default to="fail"/>
</switch>
</decision>
<kill name="fail">
<message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())} ]</message>
</kill>
<end name="end" />
</workflow-app>
尝试运行上述workflow.xml时出现以下错误从节点[decesion-node]到节点[end]的无效转换 - Fork / Join中不允许类型为“end”的节点 我的用例是始终转移到postgre动作而不管作业是否被杀死或成功,一旦执行了postre动作,如果任何动作失败,它应该去杀死节点,否则终止节点。
答案 0 :(得分:0)
当您在fork join中运行2个MR代码时,它需要在您的群集中使用MR。所以当你运行超过2个MR代码时,它可能会在fork和join中失败。 你可以共享ur * .sh文件,或者你可以检查你是否从你的.sh文件执行普通的shell命令或从shell文件执行任何MR代码。
所以如果你运行MR代码而不是尝试增加你的集群中的MR
谢谢,快乐学习:D