Fang-Yu Rao 931a8f0ba7 IMPALA-4865: Reject Expr Rewrite When Appropriate ...

Avoided rewrite if the resulting string literal exceeds a defined limit.

Testing:
Added three statements in testFoldConstantsRule() to verify that the
expression rewrite is accepted only when the size of the rewritten
expression is below a specified threshold.

Change-Id: I8b078113ccc1aa49b0cea0c86dff2e02e1dd0e23
Reviewed-on: http://gerrit.cloudera.org:8080/12814
Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com>
Tested-by: Tim Armstrong <tarmstrong@cloudera.com>

2019-04-28 17:26:23 +00:00

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