BUG-10177: Oozie workflows that contain Hive queries which run mapreduce jobs fail on secure clusters.
Problem: There is a bug in Hive (HIVE-5618) where delegation tokens are requested for a user who does not have the ability to do so (such as when it is launched from Oozie).
Workaround: Set the configuration parameter before any query statements in the script file are launched as part of the Hive action
hive.server2.enable.doAs = false
This parameter instructs Hive not to request delegation tokens, which should not be done when running under Oozie.
BUG-9671: Oozie reports the job as failed when the app and job completed successfully when RM is restarted multiple times
Problem: From the oozie log
2013-10-05 23:04:58,952 DEBUG HadoopAccessorService:545 - USER[hrt_qa] GROUP[-] TOKEN[] APP[wordcount-wf] JOB[0000003-131005052220011-oozie-oozi-W] ACTION[0000003-131005052220011-oozie-oozi-W@wc] Checking if filesystem hdfs is supported 2013-10-05 23:04:58,954 WARN MapReduceActionExecutor:542 - USER[hrt_qa] GROUP[-] TOKEN[] APP[wordcount-wf] JOB[0000003-131005052220011-oozie-oozi-W] ACTION[0000003-131005052220011-oozie-oozi-W@wc] Launch erMapper died, check Hadoop log for job [hor12n01.gq1.ygridcore.net:8032:job_1381013595258_0001]
But this job and the application complete successfully.
