[CALCITE-4626] Warning during build for JDK9+ projects due to com.google.protobuf.UnsafeUtil

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.26.0
• Fix Version/s: avatica-1.19.0
• Component/s: avatica
• Labels: pull-request-available
• Assignee: Unassigned
• Reporter: Amann Malik
• Created: 29/May/21 21:51
• Updated: 11/Aug/22 19:19
• Resolved: 04/Oct/21 18:08

Description

During project builds using calcite-core, the following warning shows up:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.protobuf.UnsafeUtil (file:/Users/amannmalik/.gradle/caches/modules-2/files-2.1/com.google.protobuf/protobuf-java/3.6.1/d06d46ecfd92ec6d0f3b423b4cd81cb38d8b924/protobuf-java-3.6.1.jar) to field java.nio.Buffer.address
WARNING: Please consider reporting this to the maintainers of com.google.protobuf.UnsafeUtil
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

This is due to the Avatica dependency on a version of protobuf-java that suffers from the already documented and resolved issue: https://github.com/protocolbuffers/protobuf/issues/3781

Simply upgrading the dependency version to the latest (3.17.1) passes the Avatica build and results in removal of the warning.

 

Issue Links

• is related to: CALCITE-5232 Upgrade protobuf-java from 3.17.1 to 3.21.5
• relates to: CALCITE-4836 Upgrade protobuf-java 3.6.1 -> 3.17.1
• links to: GitHub Pull Request #146