大叔经验分享(6)Oozie如何查看提交到Yarn上的任务日志

通过oozie job id可以查看流程详细信息,命令如下:

oozie job -info 0012077-180830142722522-oozie-hado-W

 

流程详细信息如下:

Job ID : 0012077-180830142722522-oozie-hado-W

------------------------------------------------------------------------------------------------------------------------------------

Workflow Name : test_wf

App Path      : hdfs://hdfs_name/oozie/test_wf.xml

Status        : KILLED

Run           : 0

User          : hadoop

Group         : -

Created       : 2018-09-25 02:51 GMT

Started       : 2018-09-25 02:51 GMT

Last Modified : 2018-09-25 02:53 GMT

Ended         : 2018-09-25 02:53 GMT

CoordAction ID: -

 

Actions

------------------------------------------------------------------------------------------------------------------------------------

ID                                                                            Status    Ext ID                 Ext Status Err Code 

------------------------------------------------------------------------------------------------------------------------------------

0012077-180830142722522-oozie-hado-W@:start:                                  OK        -                      OK         -        

------------------------------------------------------------------------------------------------------------------------------------

0012077-180830142722522-oozie-hado-W@test_spark_task                  ERROR     application_1537326594090_5663FAILED/KILLEDJA018    

------------------------------------------------------------------------------------------------------------------------------------

0012077-180830142722522-oozie-hado-W@Kill                                     OK        -                      OK         E0729    

------------------------------------------------------------------------------------------------------------------------------------

 

失败的任务定义如下

<action name="test_spark_task"> 

        <spark xmlns="uri:oozie:spark-action:0.1"> 

            <job-tracker>${job_tracker}</job-tracker> 

            <name-node>${name_node}</name-node> 

            <master>${jobmaster}</master> 

            <mode>${jobmode}</mode> 

            <name>${jobname}</name> 

            <class>${jarclass}</class> 

            <jar>${jarpath}</jar> 

            <spark-opts>--executor-memory 4g --executor-cores 2 --num-executors 4 --driver-memory 4g</spark-opts> 

        </spark>

 

在yarn上可以看到application_1537326594090_5663对应的application如下

application_1537326594090_5663       hadoop oozie:launcher:T=spark:W=test_wf:A=test_spark_task:ID=0012077-180830142722522-oozie-hado-W         Oozie Launcher

 

查看application_1537326594090_5663日志发现

2018-09-25 10:52:05,237 [main] INFO  org.apache.hadoop.yarn.client.api.impl.YarnClientImpl  - Submitted application application_1537326594090_5664

 

yarn上application_1537326594090_5664对应的application如下

application_1537326594090_5664       hadoop    TestSparkTask SPARK

 

即application_1537326594090_5664才是Action对应的spark任务,为什么中间会多一步,类结构和核心代码详见 https://www.cnblogs.com/barneywill/p/9895225.html

简要来说,Oozie执行Action时,即ActionExecutor(最主要的子类是JavaActionExecutor,hive、spark等action都是这个类的子类),JavaActionExecutor首先会提交一个LauncherMapper(map任务)到yarn,其中会执行LauncherMain(具体的action是其子类,比如JavaMain、SparkMain等),spark任务会执行SparkMain,在SparkMain中会调用org.apache.spark.deploy.SparkSubmit来提交任务

 

如果提交的是spark任务,那么按照上边的方法就可以跟踪到实际任务的applicationId;
如果你提交的hive2任务,实际是用beeline启动,从hive2开始,beeline命令的日志已经简化,不像hive命令可以看到详细的applicationId和进度,这时有两种方法:

1)修改hive代码,使得beeline命令和hive命令一样有详细日志输出

详见:https://www.cnblogs.com/barneywill/p/10185949.html

2)根据application tag手工查找任务

oozie在使用beeline提交任务时,会添加一个mapreduce.job.tags参数,比如

--hiveconf
mapreduce.job.tags=oozie-9f896ad3d40c261235dc6858cadb885c

但是这个tag从yarn application命令中查不到,只能手工逐个查找(实际启动的任务会在当前LuancherMapper的applicationId上递增),

然后就可以看到实际启动的applicationId了

 

另外还可以从job history server上看到application的详细信息,比如configuration、task等

查看hive任务执行的完整sql详见:https://www.cnblogs.com/barneywill/p/10083731.html

 

posted @ 2018-12-12 17:15  匠人先生  阅读(2673)  评论(0编辑  收藏  举报