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https://issues.apache.org/jira/browse/HIVE-235?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Carl Steinbach updated HIVE-235:
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Fix Version/s: 0.3.0
> DynamicSerDe does not work with Thrift Protocols that can have missing fields
> for null values
> ---------------------------------------------------------------------------------------------
>
> Key: HIVE-235
> URL: https://issues.apache.org/jira/browse/HIVE-235
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Serializers/Deserializers
> Reporter: Zheng Shao
> Assignee: Zheng Shao
> Priority: Blocker
> Fix For: 0.3.0
>
> Attachments: HIVE-235.1.patch, HIVE-235.2.patch
>
>
> The current DynamicSerDe code assumes all fields are there and no fields are
> missing.
> However Thrift Protocols can have missing fields, in case the field is null.
> In that case, DynamicSerDe may commit 2 behavior:
> 1. array index out of bound error because DynamicSerDe assumes the number of
> fields in the record should be equal to that in the DDL;
> 2. fields with null values will take the value from the last record. This may
> produce wrong result for queries.
> In order to fix this, we need to:
> 1. Pass ObjectInspector/TypeInfo recursively so that we know the number of
> fields when deserializing the record.
> 2. Clear out fields that are missing from the record.
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