[SPARK-48624] Performance improvement via refactoring some suboptimal algorithms - ASF JIRA

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1.	Perf improvement for calculating hex string for long	Resolved	Kent Yao	Actions
2.	Perf improvement for unescapePathName	Resolved	Kent Yao	Actions
3.	Perf improvement for parsing hex string	Resolved	Kent Yao	Actions
4.	Perf improvement for escapePathName	Resolved	Kent Yao	Actions
5.	Perf improvement for binary to HEX_DISCRETE strings	Resolved	Kent Yao	Actions
6.	Perf improvement for format hex from byte array	Resolved	Unassigned	Actions
7.	Improve performance of ParserUtils.unescapeSQLString	Resolved	Josh Rosen	Actions
8.	Improve performance of SparkConf.get(ConfigEntry)	Resolved	Josh Rosen	Actions
9.	Perf Improvement for Encode with empty string and UTF-8 charset	Resolved	Kent Yao	Actions
10.	Performance Improvement for BIN function	Resolved	Kent Yao	Actions
11.	Perf improvement for CSV UnivocityParser with ANSI Intervals	Resolved	Kent Yao	Actions
12.	Use lowercased charset name to decrease cache missing in Charset.forName	Resolved	Kent Yao	Actions
13.	Perf improvement for cryptographic hash functions	Open	Kent Yao	Actions