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From "Travis Crawford (JIRA)" <>
Subject [jira] [Commented] (HIVE-3323) ThriftSerde: Enable enum to string conversions
Date Tue, 04 Sep 2012 23:22:09 GMT


Travis Crawford commented on HIVE-3323:

While making a number of thrift-related change, I've found testing has been a challenge because
we didn't have a really comprehensive thrift struct with all the field types we wanted to
test. Part of this change is a new struct that actually has an enum field, but also stuff
like a binary field (which we now see has basically the same issue as enum, where the HeapByteBuffer
is treated like a struct rather than byte[]), set fields (which I didn't realize until recently
are not supported, etc. Now we'll have visibility into this stuff and can fix.

struct MegaStruct {
   1: optional bool my_bool,
   2: optional byte my_byte,
   3: optional i16 my_16bit_int,
   4: optional i32 my_32bit_int,
   5: optional i64 my_64bit_int,
   6: optional double my_double,
   7: optional string my_string,
   8: optional binary my_binary,
   9: optional map<string, string> my_string_string_map,
  10: optional map<string, MyEnum> my_string_enum_map,
  11: optional map<MyEnum, string> my_enum_string_map,
  12: optional map<MyEnum, MiniStruct> my_enum_struct_map,
  13: optional map<MyEnum, list<string>> my_enum_stringlist_map,
  14: optional map<MyEnum, list<MiniStruct>> my_enum_structlist_map,
  15: optional list<string> my_stringlist,
  16: optional list<MiniStruct> my_structlist,
  17: optional list<MyEnum> my_enumlist,
  18: optional set<string> my_stringset,
  19: optional set<MyEnum> my_enumset,
  20: optional set<MiniStruct> my_structset
> ThriftSerde: Enable enum to string conversions
> ----------------------------------------------
>                 Key: HIVE-3323
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>    Affects Versions: 0.10.0
>            Reporter: Travis Crawford
>            Assignee: Travis Crawford
>         Attachments: HIVE-3323_enum_to_string.1.patch, HIVE-3323_enum_to_string.2.patch,
HIVE-3323_enum_to_string.3.patch, HIVE-3323_enum_to_string.4.patch, HIVE-3323_enum_to_string.5.patch
> When using serde-reported schemas with the ThriftDeserializer, Enum fields are presented
as {{struct<value:int>}}
> Many users expect to work with the string values, which is both easier and more meaningful
as the string value communicates what is represented.
> Hive should provide a mechanism to optionally convert enum values to strings.

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