[jira] [Commented] (FLINK-19629) English words are spelled incorrectly and an example is not provided

["shizhengchao (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-19629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17213561#comment-17213561 ] 

shizhengchao commented on FLINK-19629:
--------------------------------------

[~jark], i can complete this work, could you assign it to me ?

 

> English words are spelled incorrectly and an example is not provided
> --------------------------------------------------------------------
>
>                 Key: FLINK-19629
>                 URL: https://issues.apache.org/jira/browse/FLINK-19629
>             Project: Flink
>          Issue Type: Bug
>          Components: Documentation
>    Affects Versions: 1.11.2
>            Reporter: shizhengchao
>            Priority: Critical
>             Fix For: 1.12.0
>
>
> the docs Connectors/Table & SQL Connectors/Formats/Avro:
>  In addition to the types listed above, Flink supports reading/writing nullable types. Flink maps nullable types to Avro union(something, null), where something is the Avro type converted from Flink type.
> avro have no union type, should be unions:
>  Avro unions(something, null)
> by the way, an example should be provided that reading/writing nullable types, such as this:
> {code:java}
> CREATE TABLE user_behavior (
>   behavior STRING NULL
> ) WITH (
>  'connector' = 'kafka',
>  'topic' = 'user_behavior',
>  'properties.bootstrap.servers' = 'localhost:9092',
>  'properties.group.id' = 'testGroup',
>  'format' = 'avro'
> )
> {code}



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