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From "Jason Dere (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-9172) Merging HIVE-5871 into LazySimpleSerDe
Date Fri, 09 Jan 2015 22:11:34 GMT

    [ https://issues.apache.org/jira/browse/HIVE-9172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14271943#comment-14271943
] 

Jason Dere commented on HIVE-9172:
----------------------------------

Haven't really taken a detailed look yet, but a few questions:
- This changes a lot of the existing methods for the Lazy SerDe classes, which affects a lot
of the serializers in Hive and possibly 3rd party SerDes. Are these interfaces something we
can change like this, or do we need to keep/deprecate the old methods for backward compatibility?
If this does break backward compatbility, what work would be involved to transition to the
new API - would it simply be the change from byte to byte[] for delimiters?
- This patch removes MultiDelimitSerde. Again on the subject of backward compatibility, might
be better to deprecate, then remove in a later release. If a user created a table with MultiDelimitSerde
and then cannot use the table with the new version of Hive because it no longer contains this
MultiDelimitSerde, would they be able to switch the table SerDe to LazySimpleSerDe and have
the table work as it was before?
- HIVE-5871 mentions that unlike LazySimpleSerDe, MultiDelimitSerde will not base64 encode
binary data due to some concerns about the multi-byte delimiter. Do the concerns here also
affect LazySimpleSerDe if it uses multi-byte delimiters?

> Merging HIVE-5871 into LazySimpleSerDe
> --------------------------------------
>
>                 Key: HIVE-9172
>                 URL: https://issues.apache.org/jira/browse/HIVE-9172
>             Project: Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>            Reporter: Navis
>            Assignee: Navis
>            Priority: Minor
>         Attachments: HIVE-9172.1.patch.txt, HIVE-9172.2.patch.txt, HIVE-9172.3.patch.txt
>
>
> Merging multi character support for field delimiter to LazySimpleSerDe



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