> Error: Java heap space Guess this should give a hint.
On Fri, Jul 19, 2013 at 4:22 AM, ch huang <justlo...@gmail.com> wrote: > why the task failed? anyone can help? > > > hive> select cookieid,count(url) as visit_num from alex_test_big_seq group > by cookieid order by visit_num desc limit 10; > > MapReduce Total cumulative CPU time: 49 minutes 20 seconds 870 msec > Ended Job = job_1374214993631_0037 with errors > Error during job, obtaining debugging information... > Job Tracking URL: > http://CH22:8088/proxy/application_1374214993631_0037/<http://ch22:8088/proxy/application_1374214993631_0037/> > Examining task ID: task_1374214993631_0037_m_000007 (and more) from job > job_1374214993631_0037 > Examining task ID: task_1374214993631_0037_m_000002 (and more) from job > job_1374214993631_0037 > Examining task ID: task_1374214993631_0037_m_000028 (and more) from job > job_1374214993631_0037 > Examining task ID: task_1374214993631_0037_m_000035 (and more) from job > job_1374214993631_0037 > Examining task ID: task_1374214993631_0037_m_000046 (and more) from job > job_1374214993631_0037 > Examining task ID: task_1374214993631_0037_m_000054 (and more) from job > job_1374214993631_0037 > Examining task ID: task_1374214993631_0037_m_000020 (and more) from job > job_1374214993631_0037 > Examining task ID: task_1374214993631_0037_m_000040 (and more) from job > job_1374214993631_0037 > Examining task ID: task_1374214993631_0037_m_000040 (and more) from job > job_1374214993631_0037 > Examining task ID: task_1374214993631_0037_m_000079 (and more) from job > job_1374214993631_0037 > > Task with the most failures(4): > ----- > Task ID: > task_1374214993631_0037_m_000011 > > URL: > > http://CH22:8088/taskdetails.jsp?jobid=job_1374214993631_0037&tipid=task_1374214993631_0037_m_000011<http://ch22:8088/taskdetails.jsp?jobid=job_1374214993631_0037&tipid=task_1374214993631_0037_m_000011> > ----- > Diagnostic Messages for this Task: > Error: Java heap space > > FAILED: Execution Error, return code 2 from > org.apache.hadoop.hive.ql.exec.MapRedTask > MapReduce Jobs Launched: > Job 0: Map: 114 Reduce: 33 Cumulative CPU: 2960.87 sec HDFS Read: > 22037646479 HDFS Write: 0 FAIL > Total MapReduce CPU Time Spent: 49 minutes 20 seconds 870 msec > -- Swarnim