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https://issues.apache.org/jira/browse/FLINK-7360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16597513#comment-16597513
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xueyu commented on FLINK-7360:
------------------------------
It looks that flink scala does not support java.util.Map too, such as scala
fromCollection
{code:java}
val data = List( (1, Collections.singletonMap("foo", "bar")),
(2, Collections.singletonMap("foo1", "bar1")),
(3, Collections.singletonMap("foo2", "bar2")) )
val env = StreamExecutionEnvironment.getExecutionEnvironment
env.fromCollection(data)
{code}
Do we need to support this java map in scala? [~twalthr]
> Support Scala map type in Table API
> -----------------------------------
>
> Key: FLINK-7360
> URL: https://issues.apache.org/jira/browse/FLINK-7360
> Project: Flink
> Issue Type: New Feature
> Components: Table API & SQL
> Reporter: Timo Walther
> Priority: Major
>
> Currently, Flink SQL supports only Java `java.util.Map`. Scala maps are
> treated as a blackbox with Flink `GenericTypeInfo`/SQL `ANY` data type.
> Therefore, you can forward these blackboxes and use them within scalar
> functions but accessing with the `['key']` operator is not supported.
> We should convert these special collections at the beginning, in order to use
> in a SQL statement.
> See:
> https://stackoverflow.com/questions/45471503/flink-table-api-sql-and-map-types-scala
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