bd2019us created HIVE-21636:
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Summary: Performance cost when using replaceAll() vs replace()
Key: HIVE-21636
URL: https://issues.apache.org/jira/browse/HIVE-21636
Project: Hive
Issue Type: Improvement
Components: Accumulo Storage Handler, HCatalog, Vectorization
Reporter: bd2019us
Use String.replace() instead of String.replaceAll() when replaceAll() does not
use a regex
replace() does not need extra compilation / performance overhead when a
non-regex string is used. Thus changing replaceAll() to replace() can remove
the associated performance overhead.
Affected files:
#
accumulo-handler/src/java/org/apache/hadoop/hive/accumulo/predicate/compare/StringCompare.java
#
hcatalog/core/src/main/java/org/apache/hive/hcatalog/mapreduce/FileOutputCommitterContainer.java
# vector-code-gen/src/org/apache/hadoop/hive/tools/GenVectorCode.java
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