Reynold Xin created SPARK-9213:
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Summary: Improve regular expression performance
Key: SPARK-9213
URL: https://issues.apache.org/jira/browse/SPARK-9213
Project: Spark
Issue Type: Umbrella
Components: SQL
Reporter: Reynold Xin
I'm creating an umbrella ticket to improve regular expression performance for
string expressions. Right now our use of regular expressions is inefficient for
two reasons:
1. Java regex in general is slow.
2. We have to convert everything from UTF8 encoded bytes into Java String, and
then run regex on it, and then convert it back.
There are libraries in Java that provide regex support directly on UTF8 encoded
bytes. One prominent example is joni, used in JRuby.]
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