jcamachor commented on a change in pull request #1126:
URL: https://github.com/apache/hive/pull/1126#discussion_r442379240
##########
File path:
ql/src/test/results/clientpositive/llap/sketches_rewrite_cume_dist_partition_by.q.out
##########
@@ -26,76 +26,42 @@ POSTHOOK: Input: _dummy_database@_dummy_table
POSTHOOK: Output: default@sketch_input
POSTHOOK: Lineage: sketch_input.category SCRIPT []
POSTHOOK: Lineage: sketch_input.id SCRIPT []
-PREHOOK: query: select id,category,cume_dist() over (partition by category
order by id) from sketch_input order by category,id
-PREHOOK: type: QUERY
-PREHOOK: Input: default@sketch_input
-#### A masked pattern was here ####
-POSTHOOK: query: select id,category,cume_dist() over (partition by category
order by id) from sketch_input order by category,id
-POSTHOOK: type: QUERY
-POSTHOOK: Input: default@sketch_input
-#### A masked pattern was here ####
-1 a 0.18181818181818182
-1 a 0.18181818181818182
-2 a 0.2727272727272727
-3 a 0.36363636363636365
-4 a 0.45454545454545453
-5 a 0.5454545454545454
-6 a 0.6363636363636364
-7 a 0.7272727272727273
-8 a 0.8181818181818182
-9 a 0.9090909090909091
-10 a 1.0
-6 b 0.18181818181818182
-6 b 0.18181818181818182
-7 b 0.2727272727272727
-8 b 0.36363636363636365
-9 b 0.45454545454545453
-10 b 0.5454545454545454
-11 b 0.6363636363636364
-12 b 0.7272727272727273
-13 b 0.8181818181818182
-14 b 0.9090909090909091
-15 b 1.0
-1 NULL 0.25
-2 NULL 0.5
-10 NULL 0.75
-13 NULL 1.0
-PREHOOK: query: select id,category,cume_dist() over (partition by category
order by id),1.0-ds_kll_cdf(ds, CAST(-id AS FLOAT))[0]
+PREHOOK: query: select id,category,cume_dist() over (partition by category
order by id),ds_kll_cdf(ds, CAST(id AS FLOAT))[0]
from sketch_input
-join ( select category as c,ds_kll_sketch(cast(-id as float)) as ds from
sketch_input group by category) q on (q.c=category)
+join ( select category as c,ds_kll_sketch(cast(id as float)) as ds from
sketch_input group by category) q on (q.c=category)
order by category,id
PREHOOK: type: QUERY
PREHOOK: Input: default@sketch_input
#### A masked pattern was here ####
-POSTHOOK: query: select id,category,cume_dist() over (partition by category
order by id),1.0-ds_kll_cdf(ds, CAST(-id AS FLOAT))[0]
+POSTHOOK: query: select id,category,cume_dist() over (partition by category
order by id),ds_kll_cdf(ds, CAST(id AS FLOAT))[0]
from sketch_input
-join ( select category as c,ds_kll_sketch(cast(-id as float)) as ds from
sketch_input group by category) q on (q.c=category)
+join ( select category as c,ds_kll_sketch(cast(id as float)) as ds from
sketch_input group by category) q on (q.c=category)
order by category,id
POSTHOOK: type: QUERY
POSTHOOK: Input: default@sketch_input
#### A masked pattern was here ####
-1 a 0.18181818181818182 0.18181818181818177
-1 a 0.18181818181818182 0.18181818181818177
-2 a 0.2727272727272727 0.2727272727272727
-3 a 0.36363636363636365 0.36363636363636365
-4 a 0.45454545454545453 0.4545454545454546
-5 a 0.5454545454545454 0.5454545454545454
-6 a 0.6363636363636364 0.6363636363636364
-7 a 0.7272727272727273 0.7272727272727273
-8 a 0.8181818181818182 0.8181818181818181
-9 a 0.9090909090909091 0.9090909090909091
-10 a 1.0 1.0
-6 b 0.18181818181818182 0.18181818181818177
-6 b 0.18181818181818182 0.18181818181818177
-7 b 0.2727272727272727 0.2727272727272727
-8 b 0.36363636363636365 0.36363636363636365
-9 b 0.45454545454545453 0.4545454545454546
-10 b 0.5454545454545454 0.5454545454545454
-11 b 0.6363636363636364 0.6363636363636364
-12 b 0.7272727272727273 0.7272727272727273
-13 b 0.8181818181818182 0.8181818181818181
-14 b 0.9090909090909091 0.9090909090909091
-15 b 1.0 1.0
+1 a 0.18181818181818182 0.0
Review comment:
{quote}
As a matter of fact; I think after submitting a patch to alter the udf a bit
it could get back to the more accurate results again.
{quote}
Yes, I think we should do that. Thanks
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