lriggs opened a new pull request, #602: URL: https://github.com/apache/arrow-java/pull/602
### Rationale for this change Multiple threads can attempt to create the same llvm expression in Gandiva. This isn't allowed with the new JIT compiler, so synchronizing will prevent this scenario. ### What changes are included in this PR? Synchronize some methods to avoid adding duplicate llvm expressions. ### Are these changes tested? Yes, through unit tests in Gandiva. ### Are there any user-facing changes? No. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org