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https://issues.apache.org/jira/browse/HIVE-24645?focusedWorklogId=536563&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-536563
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ASF GitHub Bot logged work on HIVE-24645:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 15/Jan/21 17:47
Start Date: 15/Jan/21 17:47
Worklog Time Spent: 10m
Work Description: jfsii opened a new pull request #1876:
URL: https://github.com/apache/hive/pull/1876
Change-Id: Ic6ddbf9ffb14c293caadf1f8ec1e7ec0f9291a31
### What changes were proposed in this pull request?
UDF configure does not get called if fetch task conversion happens.
This attempts to resolve this by calling configure with a dummy
MapredContext.
It is a bit ugly in that MapredContext seems to be legacy baggage with
various members that do not make sense for a variety of engines and code.
### Why are the changes needed? Some custom UDFs are designed with the
expectation that configure is called in all instances. Users sometimes use it
to inspect configuration values or to set new values to propagate to the
evaluate method or to do one time setup.
### Does this PR introduce _any_ user-facing change? Yes - it will now call
configure in cases where configure was not called before.
### How was this patch tested? Added udf_configure.q and manual testing
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Issue Time Tracking
-------------------
Worklog Id: (was: 536563)
Remaining Estimate: 0h
Time Spent: 10m
> UDF configure not called when fetch task conversion occurs
> ----------------------------------------------------------
>
> Key: HIVE-24645
> URL: https://issues.apache.org/jira/browse/HIVE-24645
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2
> Reporter: John Sherman
> Assignee: John Sherman
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When hive.fetch.task.conversion kicks in - UDF configure is not called.
> This is likely due to MapredContext not being available when this conversion
> occurs.
> The approach I suggest is to create a dummy MapredContext and provide it with
> the current configuration from ExprNodeGenericFuncEvaluator.
> It is slightly unfortunate that the UDF API relies on MapredContext since
> some aspects of the context do not apply to the variety of engines and
> invocation paths for UDFs which makes it difficult to make a fully formed
> dummy object such as the Reporter objects and the boolean around if it is a
> Map context.
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