如何在Java中运行pentaho猪作业

Question

I have created job in spoon where i am using pig script executor.in UI it works fine.it is calling pig script and giving desired output

Output(s): Successfully stored 445454 records (15256953 bytes) in: "/hive/warehouse/weblogs/aggregate_pig_test3"

Counters: Total records written : 445454 Total bytes written : 15256953 Spillable Memory Manager spill count : 0 Total bags proactively spilled: 0 Total records proactively spilled: 0

Job DAG: job_local270305097_0001 2016/04/06 17:24:12 - Pig Script Executor - 2016/04/06 17:24:12 - Success! 2016/04/06 17:24:12 - Pig Script Executor - Num successful jobs: 1 num failed jobs: 0

now when i use same .kjb file in java i dont get desired output.it seems like my script is not executed still i am not getting any exception

my java code

         KettleEnvironment.init();
         Properties props = new Properties();
        JobMeta  metadata = new JobMeta("pig.kjb",null);
        Job  job = new Job (null, metadata);
        job.start();
        job.waitUntilFinished();

        System.err.println(job.getStatus());
          if (job.getErrors()!=0) {
            System.out.println("Error encountered!");
         }

    } catch (KettleException e) {
        e.printStackTrace();
    }
}

output of java method:

2016/04/06 18:25:59 - pig - Start of job execution 2016/04/06 18:25:59 - pig - Starting entry [Pig Script Executor] 2016/04/06 18:25:59 - pig - Finished job entry [Pig Script Executor] (result= 2016/04/06 18:25:59 - pig - Job execution finished

But nothing happens.like above in spoon UI it stores file. I dont know what is missing. Why is my java code is not executing.

Answer 1

我错过了-DKETTLE_PLUGIN_BASE_FOLDERS，这是在pentaho中进行hadoop配置所必需的。