Java 18 is now production. I think we should support it in the next releases of Calcite and Avatica.
I have created a case to support Java 18 in Calcite and Avatica [1], a case for Calcite release 1.31 [2], a case for Avatica release 1.21 [3], and made #2 and #3 depend on #1. It would be great if someone could fix #1 asap. Julian [1] https://issues.apache.org/jira/browse/CALCITE-5095 [2] https://issues.apache.org/jira/browse/CALCITE-5096 [3] https://issues.apache.org/jira/browse/CALCITE-5097 <https://issues.apache.org/jira/browse/CALCITE-5097>
