[jira] Commented: (HIVE-1419) Policy on deserialization errors

["Namit Jain (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-1419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12902559#action_12902559 ] 

Namit Jain commented on HIVE-1419:
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@Vladimir/Edward,

Are you still working on this ? Seems like a good feature to have - Oracle sqlldr has very similar functionality where you can specify the number of
bad rows.

Can you refresh the patch ?

> Policy on deserialization errors
> --------------------------------
>
>                 Key: HIVE-1419
>                 URL: https://issues.apache.org/jira/browse/HIVE-1419
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Serializers/Deserializers
>    Affects Versions: 0.5.0
>            Reporter: Vladimir Klimontovich
>            Assignee: Vladimir Klimontovich
>            Priority: Minor
>             Fix For: 0.7.0
>
>         Attachments: corrupted_records_0.5.patch, corrupted_records_0.5_ver2.patch, corrupted_records_trunk.patch, corrupted_records_trunk_ver2.patch
>
>
> When deserializer throws an exception the whole map tasks fails (see MapOperator.java file). It's not always an convenient behavior especially on huge datasets where several corrupted lines could be a normal practice. Proposed solution:
> 1) Have a counter of corrupted records
> 2) When a counter exceeds a limit (configurable via hive.max.deserializer.errors property, 0 by default) throw an exception. Otherwise just log and exception with WARN level.
> Patches for 0.5 branch and trunk are attached

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