Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/13939#discussion_r68701105
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveSessionCatalog.scala ---
@@ -221,4 +214,18 @@ private[sql] class HiveSessionCatalog(
}
}
}
+
+ /** List of functions we pass over to Hive. Note that over time this
list should go to 0. */
+ // We have a list of Hive built-in functions that we do not support. So,
we will check
+ // Hive's function registry and lazily load needed functions into our
own function registry.
+ // Those Hive built-in functions are
+ // compute_stats, context_ngrams, create_union,
+ // current_user ,elt, ewah_bitmap, ewah_bitmap_and, ewah_bitmap_empty,
ewah_bitmap_or, field,
+ // histogram_numeric, in_file, index, inline, java_method, map_keys,
map_values,
+ // matchpath, ngrams, noop, noopstreaming, noopwithmap,
noopwithmapstreaming,
+ // parse_url, parse_url_tuple, percentile, percentile_approx,
posexplode, reflect, reflect2,
+ // regexp, sentences, stack, std, str_to_map, windowingtablefunction,
xpath, xpath_boolean,
+ // xpath_double, xpath_float, xpath_int, xpath_long, xpath_number,
+ // xpath_short, and xpath_string.
+ private val hiveFunctions = Seq("percentile", "percentile_approx")
--- End diff --
Oh.
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