[ASTERIXDB-2164] StackOverflow in type computing for certain queries.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Component/s: COMP - Compiler
• Labels: triaged
• Assignee: Xikui Wang
• Reporter: Xikui Wang
• Created: 13/Nov/17 23:38
• Updated: 15/Mar/18 00:27
• Resolved: 15/Mar/18 00:27

Description

The following query will cause the compiler stackoverflow (assume default udfs are installed):

use test;

create type TwitterUserType as closed {
 screen_name: string,
 language: string,
 friends_count: int32,
 status_count: int32,
 name: string,
 followers_count: int32
};

create type Tweet as open {
 id: int64,
 user: TwitterUserType,
 latitude: double,
 longitude: double,
 message_text: string,
 created_at: string,
 country: string
};

create dataset SyntheticTweets(Tweet) primary key id;

SET `compiler.parallelism` "5";
From SyntheticTweets t0
let t1 = testlib#addHashTagsInPlace(t0)
group by t0.id
SELECT t1;