Merge branch 'rightlib' into mergelibs-241120-1113

1 files changed, 24 insertions, 0 deletions

diff --git a/yql/essentials/tests/s-expressions/suites/SingleYamrOperation/PartitionByKey.yql b/yql/essentials/tests/s-expressions/suites/SingleYamrOperation/PartitionByKey.yql
new file mode 100644
index 0000000000..2645b699e4
--- /dev/null
+++ b/yql/essentials/tests/s-expressions/suites/SingleYamrOperation/PartitionByKey.yql
@@ -0,0 +1,24 @@
+(
+#comment
+(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 keySelector (lambda '(x) (Member x 'key)))
+(let listHandler (lambda '(groups) (block '(
+  (return (Map groups (lambda '(group) (block '(
+     (let key (Nth group '0))
+     (let stream (Nth group '1))
+     (let s (Struct))
+     (let s (AddMember s 'key key))
+     (let s (AddMember s 'subkey (String '.)))
+     (let s (AddMember s 'value (ToString (Length (ForwardList stream)))))
+     (return s)
+  )))))
+))))
+(let reducedTable (PartitionByKey table1 keySelector (Void) (Void) listHandler))
+(let mr_sink (DataSink 'yt (quote plato)))
+(let world (Write! world mr_sink (Key '('table (String 'Output))) reducedTable '('('mode 'append))))
+(let world (Commit! world mr_sink))
+(return world)
+)