Ramana Inukonda Nagaraj created DRILL-1997:
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Summary: Hive generated parquet files with maps containing strings
return wrong value
Key: DRILL-1997
URL: https://issues.apache.org/jira/browse/DRILL-1997
Project: Apache Drill
Issue Type: Bug
Components: Storage - Parquet
Reporter: Ramana Inukonda Nagaraj
Assignee: Parth Chandra
Priority: Critical
Created a parquet file in hive having the following DDL
hive> desc alltypesparquet;
OK
c1 int
c2 boolean
c3 double
c4 string
c5 array<int>
c6 map<int,string>
c7 map<string,string>
c8 struct<r:string,s:int,t:double>
c9 tinyint
c10 smallint
c11 float
c12 bigint
c13 array<array<string>>
c15 struct<r:int,s:struct<a:int,b:string>>
c16 array<struct<m:map<string,string>,n:int>>
Time taken: 0.076 seconds, Fetched: 15 row(s)
All the complex types with string in them are returning incorrect values in
drill. For example:
hive> select c6 from alltypesparquet;
NULL
NULL
{1:"x",2:"y"}
0: jdbc:drill:> select c6 from `/user/hive/warehouse/alltypesparquet`;
+------------+
| c6 |
+------------+
| {"map":[]} |
| {"map":[]} |
| {"map":[{"key":1,"value":"eA=="},{"key":2,"value":"eQ=="}]} |
+------------+
3 rows selected (0.077 seconds)
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