Inconsistency in Pig Stats reports
-----------------------------------
Key: PIG-2029
URL: https://issues.apache.org/jira/browse/PIG-2029
Project: Pig
Issue Type: Bug
Components: impl
Affects Versions: 0.8.1, 0.9.0
Reporter: Viraj Bhat
Fix For: 0.8.1, 0.9.0
I have a Pig script which reports varying Stats for the same M/R job (same
inputs). Sometimes the PigStats reports all the stats (such as
Maps,Reduces,MaxMapTime,MinMapTime,AvgMapTime,MaxReduceTime, MinReduceTime and
AvgReduceTime) for the M/R job as 0. Sometimes it reports it correctly.
Enclosed are the stderr logs for 2 runs, you can notice that for Run 1
job_201103091134_556600 from Run 1; has 0 against all the columns whereas in
Run 2, Hadoop job job_201104272229_75693 has some valid values.
The actual Job Tracker link shows that they are non empty. This points to a bug
in the interaction of the PigStats module with the Jobtracker.
Run 1:
{quote}
Job Stats (time in seconds):
JobId Maps Reduces MaxMapTime MinMapTIme AvgMapTime
MaxReduceTime MinReduceTime AvgReduceTime Alias Feature Outputs
job_201103091134_556458 160 100 552 191 368 1257 371
392
IN,SP10P,SP11P,SP12P,SP13P,SP16P,SP17P,SP18P,SP20P,SP21P,SP22P,SP23P,SP24P,SP26P,SP27P,SP28P,SP29P,SP30P,SP31P,SP32P,SP33P,SP34P,SP4P,SP6P,SP7P,SP8P,SP9P
DISTINCT,MULTI_QUERY
job_201103091134_556600 0 0 0 0 0 0 0
0 UNION5 MULTI_QUERY,MAP_ONLY /user/viraj/dir,,
job_201103091134_556601 7 100 17 8 14 200 15
27 CNJOIN25,GNJOIN25,sampleNJOIN25 GROUP_BY,COMBINER
job_201103091134_556602 0 0 0 0 0 0 0
0 CNJOIN3,GNJOIN3,sampleNJOIN3 GROUP_BY,COMBINER
job_201103091134_556603 0 0 0 0 0 0 0
0 CNJOIN15,GNJOIN15,sampleNJOIN15 GROUP_BY,COMBINER
job_201103091134_556604 2 100 13 7 10 34 13
31 CNJOIN19,GNJOIN19,sampleNJOIN19 GROUP_BY,COMBINER
job_201103091134_556644 0 0 0 0 0 0 0
0 ONJOIN15 SAMPLER
job_201103091134_556645 0 0 0 0 0 0 0
0 ONJOIN25 SAMPLER
job_201103091134_556646 0 0 0 0 0 0 0
0 ONJOIN3 SAMPLER
job_201103091134_556654 0 0 0 0 0 0 0
0 ONJOIN19 SAMPLER
job_201103091134_556662 0 0 0 0 0 0 0
0 ONJOIN19 ORDER_BY,COMBINER
..
{quote}
Run 2:
{quote}
Job Stats (time in seconds):
JobId Maps Reduces MaxMapTime MinMapTIme AvgMapTime
MaxReduceTime MinReduceTime AvgReduceTime Alias Feature Outputs
job_201104272229_75503 159 100 484 192 353 396 308
321
IN,SP10P,SP11P,SP12P,SP13P,SP16P,SP17P,SP18P,SP20P,SP21P,SP22P,SP23P,SP24P,SP26P,SP27P,SP28P,SP29P,SP30P,SP31P,SP32P,SP33P,SP34P,SP4P,SP6P,SP7P,SP8P,SP9P
DISTINCT,MULTI_QUERY
job_201104272229_75693 18 0 31 14 24 0 0
UNION5 MULTI_QUERY,MAP_ONLY /user/viraj/dir,
job_201104272229_75694 7 100 34 13 22 46 20
25 CNJOIN25,GNJOIN25,sampleNJOIN25 GROUP_BY,COMBINER
job_201104272229_75695 125 100 19 11 15 32 18
26 CNJOIN3,GNJOIN3,sampleNJOIN3 GROUP_BY,COMBINER
job_201104272229_75698 1 100 12 12 12 13 9
11 CNJOIN15,GNJOIN15,sampleNJOIN15 GROUP_BY,COMBINER
job_201104272229_75702 2 100 21 5 13 35 22
26 CNJOIN19,GNJOIN19,sampleNJOIN19 GROUP_BY,COMBINER
job_201104272229_75724 1 1 4 4 4 11 11
11 ONJOIN15 SAMPLER
job_201104272229_75725 0 0 0 0 0 0 0
ONJOIN25 SAMPLER
job_201104272229_75726 6 1 8 6 8 24 24
24 ONJOIN3 SAMPLER
job_201104272229_75729 0 0 0 0 0 0 0
ONJOIN19 SAMPLER
job_201104272229_75752 1 100 5 5 5 12 9
11 ONJOIN19 ORDER_BY,COMBINER
..
{quote}
Viraj
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