Bug 62406

Summary:	Illegal reflective access
Product:	POI	Reporter:	Kalakrishnan <kalakrishnan>
Component:	POIFS	Assignee:	POI Developers List <dev>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	jmarkus+apache01
Priority:	P2
Version:	unspecified
Target Milestone:	---
Hardware:	PC
OS:	Linux

Description Kalakrishnan 2018-05-24 06:51:54 UTC

Warning message when running under Java versions 9 / 10

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.apache.poi.poifs.nio.FileBackedDataSource$1 (file:/name_of_Jar_file) to method java.nio.DirectByteBuffer.cleaner()
WARNING: Please consider reporting this to the maintainers of org.apache.poi.poifs.nio.FileBackedDataSource$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

Comment 1 Dominik Stadler 2018-05-24 08:04:20 UTC


*** This bug has been marked as a duplicate of bug 62151 ***

Comment 2 Markus Kilås 2019-02-28 10:03:23 UTC

We are seeing this as well on Java 11. Additionally on Windows this also seems to mean that the file is not getting properly closed.

An exception is being catched in FileBackedDataSource.unmap():

class org.apache.poi.poifs.nio.FileBackedDataSource$1 cannot access class jdk.internal.ref.Cleaner (in module java.base) because module java.base does not export jdk.internal.ref to unnamed module

Comment 3 PJ Fanning 2019-03-01 09:32:14 UTC

Markus - this issue is closed as a duplicate - could you comment on https://bz.apache.org/bugzilla/show_bug.cgi?id=62151 ?