我正在使用 Oozie 的 SLA 功能。我尝试使用 ${coord:nominalTime()} 作为标称时间，但在安排工作流程时它会抛出错误:
E0803 : E0803: IO error, E1004: Expression language evaluation error, Validation error :No function is mapped to the name \"coord:nominalTime\"",
这是workflow.xml 文件:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <wf:workflow-app xmlns:wf="uri:oozie:workflow:0.4" xmlns:spark="uri:oozie:spark-action:0.2" xmlns:shell="uri:oozie:shell-action:0.2" xmlns:sla="uri:oozie:sla:0.1" xmlns:coord="uri:oozie:coordinator:0.2" name="some-Job">
<wf:global>
<wf:job-tracker>${jobTracker}</wf:job-tracker>
<wf:name-node>${nameNode}</wf:name-node>
</wf:global>
<wf:credentials>
<wf:credential name="sds-creds" type="hcat">
<wf:property>
<wf:name>hcat.metastore.principal</wf:name>
<wf:value>${hcatPrincipal}</wf:value>
</wf:property>
<wf:property>
<wf:name>hcat.metastore.uri</wf:name>
<wf:value>${hcatURL}</wf:value>
</wf:property>
</wf:credential>
</wf:credentials>
<wf:start to="some-Job"/>
<wf:action name="some-Job" cred="sds-creds">
<spark:job-tracker>${jobTracker}</spark:job-tracker>
<spark:name-node>${nameNode}</spark:name-node>
<spark:master>yarn</spark:master>
<spark:mode>cluster</spark:mode>
<spark:name>Some-Job</spark:name>
<spark:class>com.Driver</spark:class>
<spark:jar>hdfs:///user/abc.jar</spark:jar>
<wf:ok to="End"/>
<wf:error to="Kill"/>
</wf:action>
<wf:kill name="Kill">
<wf:message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</wf:message>
</wf:kill>
<wf:end name="End"/>
<sla:info>
<sla:app-name>oozie-sla-test</sla:app-name>
<sla:nominal-time>${coord:nominalTime()}</sla:nominal-time>
<sla:should-start>1</sla:should-start>
<sla:should-end>5</sla:should-end>
<sla:notification-msg>Job couldn't complete</sla:notification-msg>
<sla:alert-contact><a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="becadbcdcafed9d3dfd7d290ddd1d3" rel="noreferrer noopener nofollow">[email protected]</a></sla:alert-contact>
<sla:dev-contact><a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="bcc8d9cfc8fcdbd1ddd5d092dfd3d1" rel="noreferrer noopener nofollow">[email protected]</a></sla:dev-contact>
<sla:qa-contact><a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="81f5e4f2f5c1e6ece0e8edafe2eeec" rel="noreferrer noopener nofollow">[email protected]</a></sla:qa-contact>
<sla:se-contact><a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="e094859394a0878d81898cce838f8d" rel="noreferrer noopener nofollow">[email protected]</a></sla:se-contact>
</sla:info> </wf:workflow-app>
此错误的原因可能是什么？
最佳答案
您是否定义了启动此工作流程的协调器 xml？除非涉及协调员，否则您将无法使用 ${coord:nominalTime()}。
在协调器中:
<action>
<workflow>
<app-path>wf.xml</app-path>
<configuration>
<property>
<name>nominalTime</name>
<value>${coord:nominalTime()}</value>
</property>
</configuration>
</workflow>
</action>
在工作流程中:
<sla:info>
<sla:nominal-time>${nominalTime}</sla:nominal-time>
...
</sla:info>
关于OOZIE工作流.xml没有函数映射到名称坐标:nominalTime，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55867817/