In case you want to contribute or follow the discussion, here's the JIRA: https://issues.apache.org/jira/browse/FLINK-1511
Again, thanks for reporting! 2015-02-11 9:59 GMT+01:00 Fabian Hueske <fhue...@gmail.com>: > Hi, > > you are right, there is a problem. I reproduced the problem and it seems > that regular Scala classes are not properly analyzed and not identified as > Pojos. > As long as you only need these classes to be data holders without custom > logic, you could go with case classes. > > I will open a JIRA to extend Pojo support for regular Scala classes. > > Thanks for reporting, > Fabian > > 2015-02-11 2:42 GMT+01:00 Vinh June <hoangthevinh....@gmail.com>: > >> sorry, here is also the Metadata class that I use >> http://pastebin.com/WUQE613E >> >> >> >> -- >> View this message in context: >> http://apache-flink-incubator-user-mailing-list-archive.2336050.n4.nabble.com/Exception-Key-expressions-are-only-supported-on-POJO-types-and-Tuples-tp720p721.html >> Sent from the Apache Flink (Incubator) User Mailing List archive. mailing >> list archive at Nabble.com. >> > >
