[FLINK-15168] Exception is thrown when using kafka source connector with flink planner

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.10.0
• Fix Version/s: 1.10.0
• Component/s: Table SQL / Legacy Planner
• Labels: pull-request-available
• Assignee: Dawid Wysakowicz
• Reporter: Huang Xingbo
• Created: 10/Dec/19 07:17
• Updated: 19/Dec/19 21:46
• Resolved: 19/Dec/19 21:46

Description

when running the following case using kafka as source connector in flink planner, we will get a RuntimeException:

StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
env.setStreamTimeCharacteristic(TimeCharacteristic.EventTime);
env.setParallelism(1);StreamTableEnvironment tEnv = StreamTableEnvironment.create(env);tEnv.connect(new Kafka()
        .version("0.11")
        .topic("user")
        .startFromEarliest()
        .property("zookeeper.connect", "localhost:2181")
        .property("bootstrap.servers", "localhost:9092"))
        .withFormat(new Json()
                .failOnMissingField(true)
                .jsonSchema("{" +
                        "  type: 'object'," +
                        "  properties: {" +
                        "    a: {" +
                        "      type: 'string'" +
                        "    }," +
                        "    b: {" +
                        "      type: 'string'" +
                        "    }," +
                        "    c: {" +
                        "      type: 'string'" +
                        "    }," +
                        "    time: {" +
                        "      type: 'string'," +
                        "      format: 'date-time'" +
                        "    }" +
                        "  }" +
                        "}"
                ))
        .withSchema(new Schema()
                .field("rowtime", Types.SQL_TIMESTAMP)
                .rowtime(new Rowtime()
                        .timestampsFromField("time")
                        .watermarksPeriodicBounded(60000))
                .field("a", Types.STRING)
                .field("b", Types.STRING)
                .field("c", Types.STRING))
        .inAppendMode()
        .registerTableSource("source");Table t = tEnv.scan("source").select("a");tEnv.toAppendStream(t, Row.class).print();
tEnv.execute("test");

The RuntimeException detail:

Exception in thread "main" java.lang.RuntimeException: Error while applying rule PushProjectIntoTableSourceScanRule, args [rel#26:FlinkLogicalCalc.LOGICAL(input=RelSubset#25,expr#0..3={inputs},a=$t1), Scan(table:[default_catalog, default_database, source], fields:(rowtime, a, b, c), source:Kafka011TableSource(rowtime, a, b, c))]Exception in thread "main" java.lang.RuntimeException: Error while applying rule PushProjectIntoTableSourceScanRule, args [rel#26:FlinkLogicalCalc.LOGICAL(input=RelSubset#25,expr#0..3={inputs},a=$t1), Scan(table:[default_catalog, default_database, source], fields:(rowtime, a, b, c), source:Kafka011TableSource(rowtime, a, b, c))] at org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:235) at org.apache.calcite.plan.volcano.VolcanoPlanner.findBestExp(VolcanoPlanner.java:631) at org.apache.calcite.tools.Programs$RuleSetProgram.run(Programs.java:327) at org.apache.flink.table.plan.Optimizer.runVolcanoPlanner(Optimizer.scala:280) at org.apache.flink.table.plan.Optimizer.optimizeLogicalPlan(Optimizer.scala:199) at org.apache.flink.table.plan.StreamOptimizer.optimize(StreamOptimizer.scala:66) at org.apache.flink.table.planner.StreamPlanner.translateToType(StreamPlanner.scala:389) at org.apache.flink.table.planner.StreamPlanner.org$apache$flink$table$planner$StreamPlanner$$translate(StreamPlanner.scala:180) at org.apache.flink.table.planner.StreamPlanner$$anonfun$translate$1.apply(StreamPlanner.scala:117) at org.apache.flink.table.planner.StreamPlanner$$anonfun$translate$1.apply(StreamPlanner.scala:117) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.Iterator$class.foreach(Iterator.scala:891) at scala.collection.AbstractIterator.foreach(Iterator.scala:1334) at scala.collection.IterableLike$class.foreach(IterableLike.scala:72) at scala.collection.AbstractIterable.foreach(Iterable.scala:54) at scala.collection.TraversableLike$class.map(TraversableLike.scala:234) at scala.collection.AbstractTraversable.map(Traversable.scala:104) at org.apache.flink.table.planner.StreamPlanner.translate(StreamPlanner.scala:117) at org.apache.flink.table.api.java.internal.StreamTableEnvironmentImpl.toDataStream(StreamTableEnvironmentImpl.java:351) at org.apache.flink.table.api.java.internal.StreamTableEnvironmentImpl.toAppendStream(StreamTableEnvironmentImpl.java:259) at org.apache.flink.table.api.java.internal.StreamTableEnvironmentImpl.toAppendStream(StreamTableEnvironmentImpl.java:250) at org.apache.flink.table.api.example.batch.JavaBatchWordCount.main(JavaBatchWordCount.java:64)Caused by: org.apache.flink.table.api.ValidationException: Rowtime field 'rowtime' has invalid type LocalDateTime. Rowtime attributes must be of type Timestamp. at org.apache.flink.table.sources.TableSourceUtil$$anonfun$3.apply(TableSourceUtil.scala:114) at org.apache.flink.table.sources.TableSourceUtil$$anonfun$3.apply(TableSourceUtil.scala:92) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234) at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33) at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186) at scala.collection.TraversableLike$class.map(TraversableLike.scala:234) at scala.collection.mutable.ArrayOps$ofRef.map(ArrayOps.scala:186) at org.apache.flink.table.sources.TableSourceUtil$.computeIndexMapping(TableSourceUtil.scala:92) at org.apache.flink.table.sources.TableSourceUtil$.getPhysicalIndexes(TableSourceUtil.scala:307) at org.apache.flink.table.plan.rules.logical.PushProjectIntoTableSourceScanRule.onMatch(PushProjectIntoTableSourceScanRule.scala:46) at org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:208) ... 22 more

Issue Links

• blocks: FLINK-14505 SQL Client end-to-end test for Kafka 0.10 nightly end-to-end test failed on travis
• duplicates: FLINK-15323 SQL Client end-to-end test (Old planner) failed on travis
• is duplicated by: FLINK-15200 legacy planner cannot deal Type with precision like DataTypes.TIMESTAMP(3) in TableSourceUtil
• is duplicated by: FLINK-15316 SQL Client end-to-end test (Old planner) failed on Travis
• links to: GitHub Pull Request #10576
• links to: GitHub Pull Request #10605