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From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-136) SerDe should escape some special characters
Date Thu, 02 Jul 2009 00:34:47 GMT

    [ https://issues.apache.org/jira/browse/HIVE-136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12726283#action_12726283

Namit Jain commented on HIVE-136:

Also, remove the reference to LazyString from GroupByOperator.

All primitives have 3 representations: Integer, IntWritable, LazyInteger
Same goes for String.

We know in groupby, since we have converted to Standard Writable, it cannot be LazyString.

> SerDe should escape some special characters
> -------------------------------------------
>                 Key: HIVE-136
>                 URL: https://issues.apache.org/jira/browse/HIVE-136
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>    Affects Versions: 0.3.0, 0.3.1
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>            Priority: Critical
>             Fix For: 0.4.0
>         Attachments: HIVE-136.1.patch, HIVE-136.2.patch, HIVE-136.3.patch, HIVE-136.4.patch
> MetadataTypedColumnsetSerDe and DynamicSerDe should escape some special characters like
'\n' or the column/item/key separator.
> Otherwise the data will look corrupted.
> We plan to deprecate MetadataTypedColumnsetSerDe and DynamicSerDe for the simple delimited
format, and use LazySimpleSerDe instead.
> So LazySimpleSerDe needs to have the capability of escaping and unescaping.

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