[GitHub] spark pull request #20636: [SPARK-23415][SQL][TEST] Make behavior of BufferH...

[cloud-fan <gi...@git.apache.org>]

Github user cloud-fan commented on a diff in the pull request:

    https://github.com/apache/spark/pull/20636#discussion_r194526656
  
    --- Diff: sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/codegen/BufferHolder.java ---
    @@ -61,6 +61,10 @@
        * Grows the buffer by at least neededSize and points the row to the buffer.
        */
       void grow(int neededSize) {
    +    if (neededSize < 0) {
    --- End diff --
    
    I think we can use `assert` here. When `neededSize` is negative, there must be an overflow.


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