You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@flink.apache.org by "Chiwan Park (JIRA)" <ji...@apache.org> on 2015/09/16 19:00:48 UTC
[jira] [Updated] (FLINK-2690) CsvInputFormat cannot find the field
of derived POJO class
[ https://issues.apache.org/jira/browse/FLINK-2690?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chiwan Park updated FLINK-2690:
-------------------------------
Description:
A user reports {{CsvInputFormat}} cannot find the field of derived POJO class. (http://mail-archives.apache.org/mod_mbox/flink-user/201509.mbox/%3cCAJ54yvi6CbLdN7cYpey+xe8a5A_J1-6Tnx1wm1Eb63gVnQd16w@mail.gmail.com%3e)
The reason of the bug is that {{CsvInputFormat}} uses {{getDeclaredField}} method without scanning base classes to find the field. When {{CsvInputFormat}} was wrote, {{TypeInformation}} cannot be serialized. So we needed to initialize {{TypeInformation}} in {{open}} method manually. Some mistakes in initializing cause this bug.
After FLINK-2637 is merged, we can serialize {{TypeInformation}} and don't need to create field objects in {{CsvInputFormat}}.
was:
A user report {{CsvInputFormat}} cannot find the field of derived POJO class. (http://mail-archives.apache.org/mod_mbox/flink-user/201509.mbox/%3cCAJ54yvi6CbLdN7cYpey+xe8a5A_J1-6Tnx1wm1Eb63gVnQd16w@mail.gmail.com%3e)
The reason of the bug is that {{CsvInputFormat}} uses {{getDeclaredField}} method without scanning base classes to find the field. When {{CsvInputFormat}} was wrote, {{TypeInformation}} cannot be serialized. So we needed to initialize {{TypeInformation}} in {{open}} method manually. Some mistakes in initializing cause this bug.
After FLINK-2637 is merged, we can serialize {{TypeInformation}} and don't need to create field objects in {{CsvInputFormat}}.
> CsvInputFormat cannot find the field of derived POJO class
> ----------------------------------------------------------
>
> Key: FLINK-2690
> URL: https://issues.apache.org/jira/browse/FLINK-2690
> Project: Flink
> Issue Type: Bug
> Components: Java API, Scala API
> Affects Versions: 0.10
> Reporter: Chiwan Park
> Assignee: Chiwan Park
>
> A user reports {{CsvInputFormat}} cannot find the field of derived POJO class. (http://mail-archives.apache.org/mod_mbox/flink-user/201509.mbox/%3cCAJ54yvi6CbLdN7cYpey+xe8a5A_J1-6Tnx1wm1Eb63gVnQd16w@mail.gmail.com%3e)
> The reason of the bug is that {{CsvInputFormat}} uses {{getDeclaredField}} method without scanning base classes to find the field. When {{CsvInputFormat}} was wrote, {{TypeInformation}} cannot be serialized. So we needed to initialize {{TypeInformation}} in {{open}} method manually. Some mistakes in initializing cause this bug.
> After FLINK-2637 is merged, we can serialize {{TypeInformation}} and don't need to create field objects in {{CsvInputFormat}}.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)