[FLINK-15094] Warning about using private constructor of java.nio.DirectByteBuffer in Java 11 - ASF JIRA

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Details

Type: Improvement
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 1.10.1, 1.11.0
Component/s: Runtime / Task
Labels:
- pull-request-available

Description

The unsafe off-heap in FLINK-13985 was implemented by hacking into a private constructor of java.nio.DirectByteBuffer. This causes undesirable warnings in Java 11:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.apache.flink.core.memory.MemoryUtils (file:/C:/Development/repos/flink/flink-core/target/classes/) to constructor java.nio.DirectByteBuffer(long,int)
WARNING: Please consider reporting this to the maintainers of org.apache.flink.core.memory.MemoryUtils
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

We should look into this, confirm that it is harmless and try to silence it to avoid confusion for users.

Attachments

Issue Links

is caused by

FLINK-13985 Use unsafe memory for managed memory.

Resolved

relates to

FLINK-17524 Remove "An illegal reflective access operation has occurred" warnings on JDK11

Open

links to

GitHub Pull Request #11160

Activity

People

Assignee:: Andrey Zagrebin

Reporter:: Andrey Zagrebin

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Dates

Created:: 06/Dec/19 09:02

Updated:: 05/May/20 12:15

Resolved:: 25/Feb/20 09:36

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