Forget my previous message. This is most probably some class conflict. The SQL_TIMESTAMP_FORMAT field was added in 1.11. It looks as if you were using old version of the TimeFormats class from an earlier version of Flink.
Best,
Dawid
On 14/07/2020 12:07, Manas Kale wrote:
> Hi,
> I am trying to parse this JSON message:
> {"monitorId": 789, "deviceId": "abcd", "data": 144.0, "state": 2,
> "time_st": "2020-07-14 15:15:19.600000"}
> using pyFlink 1.11 DDL with this code:
> ddl_source = f""" CREATE TABLE {INPUT_TABLE}( `monitorId` STRING, `deviceId`
> STRING, `state` INT, `time_st`
> TIMESTAMP(3), WATERMARK FOR time_st AS time_st - INTERVAL '2' SECOND,
> `data` DOUBLE ) WITH ( 'connector' = 'kafka', 'topic' = '{INPUT_TOPIC}',
> 'properties.bootstrap.servers' = '{LOCAL_KAFKA}', 'format' = 'json' ) """
> I used *[1]* for the DDL format and *[2]* for the timestamp string
> format. However, when I run this I get the following error :
> *Caused by: java.io.IOException: Failed to deserialize JSON
> '{"monitorId": 789, "deviceId": "abcd", "data": 144.0, "state": 2,
> "time_st": "2020-07-14 15:15:19.600000"}'.*
> at
> org.apache.flink.formats.json.JsonRowDataDeserializationSchema.deserialize(JsonRowDataDeserializationSchema.java:126)
> at
> org.apache.flink.formats.json.JsonRowDataDeserializationSchema.deserialize(JsonRowDataDeserializationSchema.java:76)
> at
> org.apache.flink.api.common.serialization.DeserializationSchema.deserialize(DeserializationSchema.java:81)
> at
> org.apache.flink.streaming.connectors.kafka.internals.KafkaDeserializationSchemaWrapper.deserialize(KafkaDeserializationSchemaWrapper.java:56)
> at
> org.apache.flink.streaming.connectors.kafka.internal.KafkaFetcher.partitionConsumerRecordsHandler(KafkaFetcher.java:181)
> at
> org.apache.flink.streaming.connectors.kafka.internal.KafkaFetcher.runFetchLoop(KafkaFetcher.java:141)
> at
> org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase.run(FlinkKafkaConsumerBase.java:755)
> at
> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:100)
> at
> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:63)
> at
> org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.run(SourceStreamTask.java:201)
> *Caused by: java.lang.NoSuchFieldError: SQL_TIMESTAMP_FORMAT
> *
>
> I believe I am using the correct TIMESTAMP format in the JSON message
> according to the documentation so can't figure out what could be the
> error.
>
> Any help would be appreciated!
>
> [1]
> https://ci.apache.org/projects/flink/flink-docs-release-1.11/dev/table/streaming/time_attributes.html#defining-in-create-table-ddl-1
> [2]
> https://ci.apache.org/projects/flink/flink-docs-release-1.11/dev/table/types.html#timestamp
>
> Thanks,
> Manas
>
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