fangyu....@cloudera.com has uploaded this change for review. ( 
http://gerrit.cloudera.org:8080/12819


Change subject: IMPALA-4865: Reject Expr Rewrite When Appropriate
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IMPALA-4865: Reject Expr Rewrite When Appropriate

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

Testing:
Added two 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: I8265cd3705b8f8ee66d0fd94434e03c7acff7632
---
M fe/src/main/java/org/apache/impala/rewrite/FoldConstantsRule.java
M fe/src/test/java/org/apache/impala/analysis/ExprRewriteRulesTest.java
2 files changed, 12 insertions(+), 2 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/19/12819/1
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I8265cd3705b8f8ee66d0fd94434e03c7acff7632
Gerrit-Change-Number: 12819
Gerrit-PatchSet: 1
Gerrit-Owner: Anonymous Coward <fangyu....@cloudera.com>
Gerrit-Reviewer: Anonymous Coward <fangyu....@cloudera.com>
Gerrit-Reviewer: Paul Rogers <prog...@cloudera.com>

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