Changeset: 743ab96e4572 for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=743ab96e4572
Modified Files:
monetdb5/extras/crackers/crackers_holistic.c
Branch: holindex
Log Message:
Do not crack further (during idle time) a column that has reached the optimal
index.
diffs (49 lines):
diff --git a/monetdb5/extras/crackers/crackers_holistic.c
b/monetdb5/extras/crackers/crackers_holistic.c
--- a/monetdb5/extras/crackers/crackers_holistic.c
+++ b/monetdb5/extras/crackers/crackers_holistic.c
@@ -218,27 +218,26 @@ CRKrandomCrack(int *ret)
FrequencyNode *fs = getFrequencyStruct('A');
max_node=findMax(fs);
- bid=max_node->bid;
- if(bid==0)
- throw(MAL, "crackers_holistic.randomCrack", "All bats reached
the optimal index");
- b=BATdescriptor(bid);
- t=(int*)Tloc(b,BUNfirst(b));
- posl=BUNfirst(b);
- posh=BUNlast(b) - 1;
- p=(rand()%(posh-posl+1))+posl;
- low=t[p];
- p=(rand()%(posh-posl+1))+posl;
- hgh=t[p];
- if(hgh < low)
+ if(max_node->weight > 0)
{
- temp=low;
- low=hgh;
- hgh=temp;
+ bid=max_node->bid;
+ b=BATdescriptor(bid);
+ t=(int*)Tloc(b,BUNfirst(b));
+ posl=BUNfirst(b);
+ posh=BUNlast(b) - 1;
+ p=(rand()%(posh-posl+1))+posl;
+ low=t[p];
+ p=(rand()%(posh-posl+1))+posl;
+ hgh=t[p];
+ if(hgh < low)
+ {
+ temp=low;
+ low=hgh;
+ hgh=temp;
+ }
+ /*fprintf(stderr,"posl = "OIDFMT" posh = "OIDFMT" low = %d hgh = %d
inclusive = %d", posl,posh,low,hgh,inclusive );*/
+ CRKselectholBounds_int(ret, &bid, &low, &hgh, &inclusive,
&inclusive);
}
- /*fprintf(stderr,"posl = "OIDFMT" posh = "OIDFMT" low = %d hgh = %d
inclusive = %d", posl,posh,low,hgh,inclusive );*/
-
- CRKselectholBounds_int(ret, &bid, &low, &hgh, &inclusive, &inclusive);
-
*ret = 0;
return MAL_SUCCEED;
}
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