Padma Penumarthy created DRILL-6232:

             Summary: Vector initializer used for memory allocation in external 
sort is subject to aliasing
                 Key: DRILL-6232
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Flow
    Affects Versions: 1.13.0
            Reporter: Padma Penumarthy
            Assignee: Padma Penumarthy
             Fix For: 1.14.0

vector initializer class builds hints for individual columns and saves them in 
a map with lookup key of column name. For children of map columns, this name 
will be parent name + "." + child column name. This can cause problem when we 
have dots in column names i.e. {{a.b(c) and a(b.c) will have the same key and 
can cause overwrites of each other values. Change this to use allocation 
routines in column size which do not have this problem. }}

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