DateTimeFormatter is used in static context, but not thread safe

DateTimeFormatter is used in static context but not thread safe, a formatter instance is created in PrimitiveStringifer.DateStringifier, and DateStringifier is created in static final DATE_STRINGIFIER, TIMESTAMP_MILLIS_STRINGIFIER, TIMESTAMP_MICROS_STRINGIFIER, TIMESTAMP_NANOS_STRINGIFIER, TIMESTAMP_MILLIS_UTC_STRINGIFIER, TIMESTAMP_MICROS_UTC_STRINGIFIER, and TIMESTAMP_NANOS_UTC_STRINGIFIER.

This causes exceptions like the following to be thrown from parquet-code:

java.lang.ArrayIndexOutOfBoundsException: Index 633 out of bounds for length 13

stacktrace:

    at java.base/sun.util.calendar.BaseCalendar.getCalendarDateFromFixedDate(BaseCalendar.java:457)
    at java.base/java.util.GregorianCalendar.computeFields(GregorianCalendar.java:2358)
    at java.base/java.util.GregorianCalendar.computeFields(GregorianCalendar.java:2273)
    at java.base/java.util.Calendar.setTimeInMillis(Calendar.java:1827)
    at java.base/java.util.Calendar.setTime(Calendar.java:1793)
    at java.base/java.text.SimpleDateFormat.format(SimpleDateFormat.java:978)
    at java.base/java.text.SimpleDateFormat.format(SimpleDateFormat.java:971)
    at java.base/java.text.DateFormat.format(DateFormat.java:339)
    at java.base/java.text.Format.format(Format.java:159)
    at org.apache.parquet.schema.PrimitiveStringifier$DateStringifier.toFormattedString(PrimitiveStringifier.java:265)
    at org.apache.parquet.schema.PrimitiveStringifier$DateStringifier.stringify(PrimitiveStringifier.java:256)
    at org.apache.parquet.column.statistics.IntStatistics.stringify(IntStatistics.java:92)
    at org.apache.parquet.column.statistics.IntStatistics.stringify(IntStatistics.java:25)
    at org.apache.parquet.column.statistics.Statistics.minAsString(Statistics.java:423)

    (... unrelated code)

A simple solution would be to change those from static to non static values.

I can create a PR if the solution is ok by the maintainers of the library.

**Environment**: Linux, OpenJDK 17 (based on docker image openjdk:17-slim)

 
**Reporter**: [Shani Elharrar](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=shani.elha)

_{**Note**: *This issue was originally created as [PARQUET-2240](https://issues.apache.org/jira/browse/PARQUET-2240). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*}

Inizia da PrimitiveStringifier.DateStringifier, in particolare dai percorsi di toFormattedString e stringify mostrati nello stack trace, e analizza le sette istanze statiche di stringifier nominate nell’issue. Verifica il fallimento durante la formattazione concorrente e usa i test pertinenti del progetto per confermare che l’uso condiviso non generi più l’eccezione segnalata.

Scritto dal modello di indicizzazione a partire dal testo della issue.