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https://issues.apache.org/jira/browse/HIVE-2738?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nicolas Lalevée updated HIVE-2738:
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Attachment: MapToJsonUDF.java
MapMaxUDF.java
hive_job_logs.txt
Find attached the log of the hadoop Job, and the implementations of my custom
udfs.
> NPE in ExprNodeGenericFuncEvaluator
> -----------------------------------
>
> Key: HIVE-2738
> URL: https://issues.apache.org/jira/browse/HIVE-2738
> Project: Hive
> Issue Type: Bug
> Affects Versions: 0.8.0
> Reporter: Nicolas Lalevée
> Attachments: MapMaxUDF.java, MapToJsonUDF.java, hive_job_logs.txt
>
>
> Here is the query:
> bq. {{SELECT t.lid, '2011-12-12',
> s_map2json(s_maxmap(UNION_MAP(t.categoryCount), 100)) FROM ( SELECT theme_lid
> AS theme_lid, MAP(s_host(referer), COUNT( * )) AS categoryCount FROM
> PageViewEvent WHERE day >= '20130104' AND day <= '20130112' AND date_ >=
> '2012-01-04' AND date_ < '2012-01-13' AND lid IS NOT NULL GROUP BY lid,
> s_host(referer) ) t GROUP BY t.lid}}
> Removing the call s_map2json make it work but not by removing s_maxmap, but I
> don't understand what could be wrong with the implementation of my udf. And I
> don't know how to debug remote hadoop jobs.
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