[
https://issues.apache.org/jira/browse/FLINK-15112?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jark Wu closed FLINK-15112.
---------------------------
Fix Version/s: (was: 1.9.2)
Resolution: Duplicate
> 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
> Priority: Major
> Attachments: FlinkTest.java
>
>
> 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)
