[jira] [Created] (SPARK-46396) LegacyFastTimestampFormatter.parseOptional should not throw exception

[Gengliang Wang (Jira)]

Gengliang Wang created SPARK-46396:
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             Summary: LegacyFastTimestampFormatter.parseOptional should not 
throw exception
                 Key: SPARK-46396
                 URL: https://issues.apache.org/jira/browse/SPARK-46396
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 3.5.0
            Reporter: Gengliang Wang
            Assignee: Gengliang Wang


When setting spark.sql.legacy.timeParserPolicy=LEGACY, Spark will use the 
LegacyFastTimestampFormatter to infer potential timestamp columns. The 
inference shouldn't throw exception.

However, when the input is 23012150952, there is exception:

```

For input string: "23012150952"

java.lang.NumberFormatException: For input string: "23012150952"

at 
java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:67)

at java.base/java.lang.Integer.parseInt(Integer.java:668)

at java.base/java.lang.Integer.parseInt(Integer.java:786)

at 
org.apache.commons.lang3.time.FastDateParser$NumberStrategy.parse(FastDateParser.java:304)

at org.apache.commons.lang3.time.FastDateParser.parse(FastDateParser.java:1045)

at org.apache.commons.lang3.time.FastDateFormat.parse(FastDateFormat.java:651)

at 
org.apache.spark.sql.catalyst.util.LegacyFastTimestampFormatter.parseOptional(TimestampFormatter.scala:418)

```



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