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From "Mithun Radhakrishnan (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-17233) Set "mapred.input.dir.recursive" for HCatInputFormat-based jobs.
Date Wed, 02 Aug 2017 20:50:00 GMT
Mithun Radhakrishnan created HIVE-17233:
-------------------------------------------

             Summary: Set "mapred.input.dir.recursive" for HCatInputFormat-based jobs.
                 Key: HIVE-17233
                 URL: https://issues.apache.org/jira/browse/HIVE-17233
             Project: Hive
          Issue Type: Bug
          Components: HCatalog
    Affects Versions: 2.2.0, 3.0.0
            Reporter: Mithun Radhakrishnan


This has to do with {{HIVE-15575}}. {{TezCompiler}} seems to set {{mapred.input.dir.recursive}}
to {{true}}. This is acceptable for Hive jobs, since this allows Hive to consume its peculiar
{{UNION ALL}} output, where the output of each relation is stored in a separate sub-directory
of the output-dir.

For such output to be readable through HCatalog (via Pig/HCatLoader), {{mapred.input.dir.recursive}}
should be set from {{HCatInputFormat}} as well. Otherwise, one gets zero records for that
input.



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