[MADLIB-852] C++ AL does not support std::vector in HAWQ

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Labels: TriagePending
• Assignee: Rahul Iyer
• Reporter: Xixuan (Aaron) Feng
• Created: 11/Aug/14 23:26
• Updated: 15/Nov/15 20:55

Description

Reproducible by calling .push_back() in a UDF with C++ DBAL.
Insert these lines of code into any C++ UDF and call it in HAWQ. We should see the database crashes before "3" is printed while "2" is printed.

    {   
        warning("0");
        std::vector<int> a;                                                                          
        warning("1");
        a.push_back(1);                                                                              
        warning("2");                                                                                
    }   
    warning("3");

It crashes the database when destructor of std::vector is called.

We encountered this when writing display function for decision trees, worked around by using ArrayHandle<text *>.