NullPointerException in Calcite causes a PyFlink test failure

java.lang.NullPointerException: metadataHandlerProvider
Sep 15 03:14:04 E                   	at java.base/java.util.Objects.requireNonNull(Objects.java:235)
Sep 15 03:14:04 E                   	at org.apache.calcite.rel.metadata.RelMetadataQueryBase.getMetadataHandlerProvider(RelMetadataQueryBase.java:122)
Sep 15 03:14:04 E                   	at org.apache.calcite.rel.metadata.RelMetadataQueryBase.revise(RelMetadataQueryBase.java:118)
Sep 15 03:14:04 E                   	at org.apache.calcite.rel.metadata.RelMetadataQuery.getNonCumulativeCost(RelMetadataQuery.java:333)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.getCost(VolcanoPlanner.java:727)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.getCostOrInfinite(VolcanoPlanner.java:714)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.propagateCostImprovements(VolcanoPlanner.java:971)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.addRelToSet(VolcanoPlanner.java:1408)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.registerImpl(VolcanoPlanner.java:1368)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.register(VolcanoPlanner.java:598)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.ensureRegistered(VolcanoPlanner.java:613)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.ensureRegistered(VolcanoPlanner.java:95)
Sep 15 03:14:04 E                   	at org.apache.calcite.rel.AbstractRelNode.onRegister(AbstractRelNode.java:274)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.registerImpl(VolcanoPlanner.java:1270)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.register(VolcanoPlanner.java:598)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.ensureRegistered(VolcanoPlanner.java:613)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.ensureRegistered(VolcanoPlanner.java:95)
Sep 15 03:14:04 E                   	at org.apache.calcite.rel.AbstractRelNode.onRegister(AbstractRelNode.java:274)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.registerImpl(VolcanoPlanner.java:1270)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.register(VolcanoPlanner.java:598)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.ensureRegistered(VolcanoPlanner.java:613)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.ensureRegistered(VolcanoPlanner.java:95)
Sep 15 03:14:04 E                   	at org.apache.calcite.rel.AbstractRelNode.onRegister(AbstractRelNode.java:274)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.registerImpl(VolcanoPlanner.java:1270)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.register(VolcanoPlanner.java:598)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.ensureRegistered(VolcanoPlanner.java:613)
Sep 15 03:14:04 E                   	at org.apache.calcite.plan.volcano.VolcanoPlanner.changeTraits(VolcanoPlanner.java:498)
Sep 15 03:14:04 E                   	at org.apache.calcite.tools.Programs$RuleSetProgram.run(Programs.java:315)
Sep 15 03:14:04 E                   	at org.apache.flink.table.planner.plan.optimize.program.FlinkVolcanoProgram.optimize(FlinkVolcanoProgram.scala:62)
Sep 15 03:14:04 E                   	at org.apache.flink.table.planner.plan.optimize.program.FlinkChainedProgram.$anonfun$optimize$1(FlinkChainedProgram.scala:59)
[...]