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https://issues.apache.org/jira/browse/HIVE-19494?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prasanth Jayachandran updated HIVE-19494:
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Attachment: HIVE-19494-branch-3.patch
> Accept shade prefix during reflective instantiation of output format
> --------------------------------------------------------------------
>
> Key: HIVE-19494
> URL: https://issues.apache.org/jira/browse/HIVE-19494
> Project: Hive
> Issue Type: Sub-task
> Components: Streaming
> Affects Versions: 3.0.0, 3.1.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Priority: Major
> Attachments: HIVE-19494-branch-3.patch, HIVE-19494.1.patch
>
>
> Hive Streaming API jars are sometimes shaded with a different prefix when
> used in environments where another version of hive already exists (spark for
> example). In most cases, shading is done with rename of classes with some
> prefix. If an uber/assembly jar is generated with renamed prefix, Hive
> Streaming API will not work as Hive Streaming API will reflectively
> instantiate outputformat class using FQCN string provided by metastore table
> storage descriptor object.
> For example:
> RecordWriter will create instance of OutputFormat using string
> "org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat". When a shaded jar with
> renamed class references are used, this class will not be found by the
> classloader.
> We can optionally accept a shade prefix from user via config which will be
> tried (as fallback) when ClassNotFoundException is thrown.
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