Merge branch 'rightlib' into mergelibs-241120-1113

1 files changed, 45 insertions, 0 deletions

diff --git a/yql/essentials/tests/s-expressions/suites/Udf/Percentiles.yql b/yql/essentials/tests/s-expressions/suites/Udf/Percentiles.yql
new file mode 100644
index 0000000000..0a15c6095a
--- /dev/null
+++ b/yql/essentials/tests/s-expressions/suites/Udf/Percentiles.yql
@@ -0,0 +1,45 @@
+(
+#comment
+(let udfTDigest_Create (Udf 'Stat.TDigest_Create))
+(let udfTDigest_AddValue (Udf 'Stat.TDigest_AddValue))
+(let udfTDigest_GetPercentile (Udf 'Stat.TDigest_GetPercentile))
+(let udfTDigest_Serialize (Udf 'Stat.TDigest_Serialize))
+(let udfTDigest_Deserialize (Udf 'Stat.TDigest_Deserialize))
+(let udfTDigest_Merge (Udf 'Stat.TDigest_Merge))
+(let mr_source (DataSource 'yt 'plato))
+(let x (Read! world mr_source (Key '('table (String 'Input))) '('key 'subkey 'value) '()))
+(let world (Left! x))
+(let table1 (Right! x))
+(let preMap (lambda '(item) (Just item)))
+(let keyExtractor (lambda '(item) (Member item 'key)))
+(let init (lambda '(key item) (Apply udfTDigest_Create (Unwrap (FromString (Member item 'value) 'Double)))))
+(let update (lambda '(key item state) (Apply udfTDigest_AddValue state (Unwrap (FromString (Member item 'value) 'Double)))))
+(let finish (lambda '(key state) (block '(
+  (let s (Struct))
+  (let s (AddMember s 'key key))
+  (let s (AddMember s 'subkey (String '.)))
+  (let s (AddMember s 'value (Apply udfTDigest_Serialize state)))
+  (return (Just s))
+))))
+(let table2 (CombineByKey table1 preMap keyExtractor init update finish))
+(let listHandler (lambda '(stream) (FlatMap stream (lambda '(pair) (block '(
+  (let key (Nth pair '0))
+  (let list (ForwardList (Nth pair '1)))
+  (let init (lambda '(item) (Apply udfTDigest_Deserialize (Member item 'value))))
+  (let update (lambda '(item state) (Apply udfTDigest_Merge (Apply udfTDigest_Deserialize (Member item 'value)) state)))
+  (let state (Unwrap (Fold1 list init update)))
+  (let s (Struct))
+  (let s (AddMember s 'key key))
+  (let s (AddMember s 'subkey (String '.)))
+  (let g1 (ToString (Apply udfTDigest_GetPercentile state (Double '0.75))))
+  (let g2 (ToString (Apply udfTDigest_GetPercentile state (Double '0.999))))
+  (let s (AddMember s 'value (Concat (Concat g1 (String '" ")) g2)))
+  (let ret (Just s))
+  (return ret)
+))))))
+(let table3 (PartitionByKey table2 keyExtractor (Void) (Void) listHandler))
+(let mr_sink (DataSink 'yt 'plato))
+(let world (Write! world mr_sink (Key '('table (String 'Output))) table3 '('('mode 'append))))
+(let world (Commit! world mr_sink))
+(return world)
+)