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https://issues.apache.org/jira/browse/FLINK-15801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Robert Metzger updated FLINK-15801:
-----------------------------------
Fix Version/s: (was: 1.12.0)
1.13.0
> Timestamp extractor created from properties does not work for some physical
> fields
> ----------------------------------------------------------------------------------
>
> Key: FLINK-15801
> URL: https://issues.apache.org/jira/browse/FLINK-15801
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.9.0, 1.10.0
> Reporter: Dawid Wysakowicz
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.10.3, 1.13.0, 1.11.4
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> If a timestamp extractor is created from properties it can not use a physical
> field if the name of that field is equal to the logical field of the rowtime
> field.
> The code below fails:
> {code}
> StreamExecutionEnvironment streamExecutionEnvironment =
> StreamExecutionEnvironment.getExecutionEnvironment();
>
> streamExecutionEnvironment.setStreamTimeCharacteristic(TimeCharacteristic.EventTime);
> StreamTableEnvironment fsTableEnv =
> StreamTableEnvironment.create(streamExecutionEnvironment);
> String allEventsTable = "allEventsTable";
> fsTableEnv.connect(new Kafka()
> .version("universal")
> .topic("events")
> .property("zookeeper.connect", "")
> .property("bootstrap.servers", "localhost:9092")
> .property("group.id", "dummyquery").startFromLatest())
> .withSchema(new Schema()
> .field("rule_id", Types.INT)
> .field("sourceAddress", Types.STRING)
> .field("deviceProduct", Types.STRING)
> .field("destHost", Types.STRING)
> .field("extra", Types.STRING)
> .field("rowtime", Types.SQL_TIMESTAMP)
> .rowtime(new
> Rowtime().timestampsFromField("rowtime").watermarksPeriodicBounded(2000))
> )
> .withFormat(new
> Json().failOnMissingField(false).deriveSchema())
> .inAppendMode()
> .registerTableSource(allEventsTable);
> Table result = fsTableEnv.sqlQuery("select * from
> allEventsTable where sourceAddress='12345431'");
> DataStream alert = fsTableEnv.toAppendStream(result, Row.class);
> alert.print();
> {code}
> with exception:
> {code}
> Exception in thread "main" org.apache.flink.table.api.ValidationException:
> Field 'rowtime' could not be resolved by the field mapping.
> at
> org.apache.flink.table.sources.TableSourceValidation.resolveField(TableSourceValidation.java:245)
> at
> org.apache.flink.table.sources.TableSourceValidation.lambda$validateTimestampExtractorArguments$6(TableSourceValidation.java:202)
> at
> java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
> at
> java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
> at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
> at
> java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
> at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:545)
> at
> java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
> at java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:438)
> {code}
> The problem is that the field is removed from the {{FieldMapping}} in
> {{org.apache.flink.table.descriptors.SchemaValidator#deriveFieldMapping}}.
> One possible solution could be to add:
> {code}
> if (isRowtime) {
> Optional<String> timestampSource =
> properties.getOptionalString(SCHEMA + "." + i + "." +
> ROWTIME_TIMESTAMPS_FROM);
> timestampSource.ifPresent(s ->
> mapping.put(s, s));
> }
> {code}
> We should also consider the case what happens if we compute generated columns
> on fields that were pruned in a similar way.
> Reported by a user:
> https://stackoverflow.com/questions/59857057/how-to-define-an-apache-flink-table-with-row-time-attribute
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