Chris Miller created FLINK-15112:
------------------------------------
Summary: NPE when trying to join on two temporal tables in a
single query
Key: FLINK-15112
URL: https://issues.apache.org/jira/browse/FLINK-15112
Project: Flink
Issue Type: Bug
Components: Table SQL / Planner
Affects Versions: 1.9.1
Reporter: Chris Miller
Joining on two temporal tables causes Flink's query optimizer to throw a
NullPointerException. Below is an example query that causes this as well as the
exception being thrown. I've also attached some test code that replicates the
problem.
{{SELECT [o.id|http://o.id/] AS orderId, o.productId, o.currency, o.quantity,
f.rate, p.price}}
{{ FROM Orders AS o,}}
{{ LATERAL TABLE (FxRateLookup(o.rowtime)) AS f,}}
{{ LATERAL TABLE (PriceLookup(o.rowtime)) AS p}}
{{ WHERE o.currency = f.currency}}
{{ AND o.productId = p.productId}}
The exception thrown is:
{code:java}
Exception in thread "main" java.lang.NullPointerExceptionException in thread
"main" java.lang.NullPointerException at
org.apache.flink.table.calcite.FlinkRelBuilder$.of(FlinkRelBuilder.scala:129)
at
org.apache.flink.table.plan.rules.logical.LogicalCorrelateToTemporalTableJoinRule.onMatch(LogicalCorrelateToTemporalTableJoinRule.scala:91)
at
org.apache.calcite.plan.AbstractRelOptPlanner.fireRule(AbstractRelOptPlanner.java:319)
at org.apache.calcite.plan.hep.HepPlanner.applyRule(HepPlanner.java:560) at
org.apache.calcite.plan.hep.HepPlanner.applyRules(HepPlanner.java:419) at
org.apache.calcite.plan.hep.HepPlanner.executeInstruction(HepPlanner.java:284)
at
org.apache.calcite.plan.hep.HepInstruction$RuleCollection.execute(HepInstruction.java:74)
at org.apache.calcite.plan.hep.HepPlanner.executeProgram(HepPlanner.java:215)
at org.apache.calcite.plan.hep.HepPlanner.findBestExp(HepPlanner.java:202) at
org.apache.flink.table.plan.Optimizer.runHepPlanner(Optimizer.scala:228) at
org.apache.flink.table.plan.Optimizer.runHepPlannerSimultaneously(Optimizer.scala:212)
at
org.apache.flink.table.plan.Optimizer.optimizeExpandPlan(Optimizer.scala:138)
at
org.apache.flink.table.plan.StreamOptimizer.optimize(StreamOptimizer.scala:61)
at
org.apache.flink.table.planner.StreamPlanner.translateToType(StreamPlanner.scala:410)
at
org.apache.flink.table.planner.StreamPlanner.translate(StreamPlanner.scala:187)
at
org.apache.flink.table.planner.StreamPlanner.$anonfun$translate$1(StreamPlanner.scala:127)
at scala.collection.TraversableLike.$anonfun$map$1(TraversableLike.scala:233)
at scala.collection.Iterator.foreach(Iterator.scala:937) at
scala.collection.Iterator.foreach$(Iterator.scala:937) at
scala.collection.AbstractIterator.foreach(Iterator.scala:1425) at
scala.collection.IterableLike.foreach(IterableLike.scala:70) at
scala.collection.IterableLike.foreach$(IterableLike.scala:69) at
scala.collection.AbstractIterable.foreach(Iterable.scala:54) at
scala.collection.TraversableLike.map(TraversableLike.scala:233) at
scala.collection.TraversableLike.map$(TraversableLike.scala:226) at
scala.collection.AbstractTraversable.map(Traversable.scala:104) at
org.apache.flink.table.planner.StreamPlanner.translate(StreamPlanner.scala:127)
at
org.apache.flink.table.api.java.internal.StreamTableEnvironmentImpl.toDataStream(StreamTableEnvironmentImpl.java:319)
at
org.apache.flink.table.api.java.internal.StreamTableEnvironmentImpl.toAppendStream(StreamTableEnvironmentImpl.java:227)
at
org.apache.flink.table.api.java.internal.StreamTableEnvironmentImpl.toAppendStream(StreamTableEnvironmentImpl.java:218)
at test.FlinkTest.run(FlinkTest.java:93) at
test.FlinkTest.main(FlinkTest.java:23)
{code}
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
