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https://issues.apache.org/jira/browse/FLINK-20947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17263907#comment-17263907
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Jark Wu commented on FLINK-20947:
---------------------------------
Good catch [~weijiaxu]! I think you are right.
> Unable to trigger Hive partition commit when use table sql to write data from
> Kafka into a Hive table
> -----------------------------------------------------------------------------------------------------
>
> Key: FLINK-20947
> URL: https://issues.apache.org/jira/browse/FLINK-20947
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Affects Versions: 1.12.0
> Reporter: Weijia Xu
> Assignee: Weijia Xu
> Priority: Major
> Fix For: 1.13.0
>
>
> I use table sql to create stream with kafka source, and write data from Kafka
> into a Hive partitioned table.
> The following sql to create kafka table:
> {code:java}
> // code placeholder
> tableEnv.executeSql(
> "CREATE TABLE stream_tmp.kafka_tmp (`messageId` STRING, `message_type`
> STRING,`payload` STRING,`timestamp` BIGINT, " +
> " procTime AS PROCTIME()," +
> " eventTime AS TO_TIMESTAMP(FROM_UNIXTIME(`timestamp` /
> 1000,'yyyy-MM-dd HH:mm:ss'))," +
> " WATERMARK FOR eventTime AS eventTime - INTERVAL '15' SECOND )"
> +
> " WITH ('connector' = 'kafka'," +
> " 'topic' = 'XXX-topic'," +
> " 'properties.bootstrap.servers'='kafka-server:9092'," +
> " 'properties.group.id' = 'XXX-group_id'," +
> " 'scan.startup.mode' = 'latest-offset'," +
> " 'format' = 'json'," +
> " 'json.fail-on-missing-field' = 'false'," +
> " 'json.ignore-parse-errors' = 'true' )"
> );{code}
>
> And, the following sql to create Hive table:
> {code:java}
> // code placeholder
> tableEnv.executeSql(
> "CREATE TABLE hive_tmp.kafka_hive_tmp (`message_id`
> STRING,`message_type` STRING,`payload` STRING,`event_ts` BIGINT ) " +
> " PARTITIONED BY (ts_date STRING,ts_hour STRING, ts_minute
> STRING)" +
> " STORED AS PARQUET TBLPROPERTIES (" +
> " 'sink.partition-commit.trigger' = 'partition-time'," +
> " 'sink.partition-commit.delay' = '1 min'," +
> " 'sink.partition-commit.policy.kind'='metastore,success-file',"
> +
> " 'sink.partition-commit.success-file.name'='_SUCCESS'," +
> " 'partition.time-extractor.timestamp-pattern' = '$ts_date
> $ts_hour:$ts_minute:00')");
> {code}
>
> For the kafka topic used above, which has multi partitions, with some of
> the partitions there's data coming in, while other partitions with no data
> coming.
> I noticed that there's config "_table.exec.source.idle-timeout_" can handle
> the situation for the "idle" source partition, but event though set this
> config, it still cannot trigger the Hive partition commit (that means the
> "_SUCCESS" file will not be created for the partition).
> After do the analysis for this issue, find the root cause is that the
> watermark for the "idle" partition will not advance, which cause the Hive
> partition cannot be committed.
>
>
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