[jira] [Created] (HIVE-22330) Maximize smallBuffer usage in BytesColumnVector

["Karen Coppage (Jira)" <ji...@apache.org>]

Karen Coppage created HIVE-22330:
------------------------------------

             Summary: Maximize smallBuffer usage in BytesColumnVector
                 Key: HIVE-22330
                 URL: https://issues.apache.org/jira/browse/HIVE-22330
             Project: Hive
          Issue Type: Improvement
    Affects Versions: 4.0.0
            Reporter: Karen Coppage
            Assignee: Karen Coppage


When BytesColumnVector is populated with values, it either creates a new (byte[]) buffer object to help take the values, but if the values array is <=1MB, then instead of creating a new buffer it reuses a single "smallBuffer". Every time the smallBuffer is too small for the data we want to store there, the size is doubled; when the size ends up larger than 1 GB (or Integer.MAX_VALUE / 2) then the next time we try to double the size, overflow occurs and an error is thrown.

A quick fix here is to set the smallBuffer size to Integer.MAX_VALUE in this case.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)