Possible, but it will be ignored. Anything done inside a nested
foreach block will be executed at the parallel level of the preceding
group by.
Alan.
On Feb 11, 2011, at 8:57 AM, Charles Gonçalves wrote:
Is possible to use a parallel statment inside a nested foreach block
like in
:
28 E = GROUP B ALL PARALLEL 100;
29
30 edge_breakdown = FOREACH E {
31 dist_cIps = DISTINCT B.cIp *PARALLEL X * ;
32 dist_sIps = DISTINCT B.sIp ;
33 urls_ok = FILTER B BY valid(url);
34 GENERATE COUNT(dist_cIps),COUNT(dist_sIps) ,COUNT(urls_ok.url),
COUNT(B.url), SUM(B.scBytes);
35 }
I got an error :
ERROR 1000: Error during parsing. Encountered " "parallel" "PARALLEL
"" at
line 36, column 36.
Was expecting:
";" ...
My problem is that I'm using PARALLEL in line 28 an also setting the
14 SET DEFAULT_PARALLEL 30;
But even though I'm gotting just one reducer !!
Is some optimization that I can disable?
I already tried to play with the
pig.exec.reducers.bytes.per.reducer and
nothin.
I'm processing 2TB of data an one reduce is yielding no space left
on
device error!
Any
--
*Charles Ferreira Gonçalves *
http://homepages.dcc.ufmg.br/~charles/
UFMG - ICEx - Dcc
Cel.: 55 31 87741485
Tel.: 55 31 34741485
Lab.: 55 31 34095840
