Class FileOpenedEvent

java.lang.Object

jdk.jfr.Event

dev.hardwood.jfr.FileOpenedEvent

public class FileOpenedEvent
extends Event

JFR event emitted when a Parquet file is opened and its metadata is read.

This event spans the full open sequence: opening the InputFile (memory-mapping it, for a local file) and reading and parsing the Parquet footer. It is emitted for the first file when the reader is opened (ParquetFileReader.open()) and for each further file of a multi-file read as it is loaded (FileMetadataCache).

Field Summary

Fields

Modifier and Type	Field	Description
int	columnCount
String	file
long	fileSize
int	rowGroupCount

Constructor Summary

Constructors

Constructor	Description
FileOpenedEvent()

Method Summary

Methods inherited from class Event

begin, commit, end, isEnabled, set, shouldCommit

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

file

public String file

fileSize

public long fileSize

rowGroupCount

public int rowGroupCount

columnCount

public int columnCount

Constructor Details

FileOpenedEvent

public FileOpenedEvent()