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From "Mark Grover (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-4213) List bucketing error too restrictive
Date Thu, 21 Mar 2013 18:25:16 GMT
Mark Grover created HIVE-4213:
---------------------------------

             Summary: List bucketing error too restrictive
                 Key: HIVE-4213
                 URL: https://issues.apache.org/jira/browse/HIVE-4213
             Project: Hive
          Issue Type: Bug
    Affects Versions: 0.10.0
            Reporter: Mark Grover
             Fix For: 0.11.0


With the introduction of List bucketing, we introduced a config validation step where we say:
{code}
  SUPPORT_DIR_MUST_TRUE_FOR_LIST_BUCKETING(
      10199,
      "hive.mapred.supports.subdirectories must be true"
          + " if any one of following is true: hive.internal.ddl.list.bucketing.enable,"
          + " hive.optimize.listbucketing and mapred.input.dir.recursive"),
{code}

This seems overly restrictive to because there are use cases where people may want to use
{{mapred.input.dir.recursive}} to {{true}} even when they don't care about list bucketing.

Is that not true?

For example, here is the unit test code for {{clientpositive/recursive_dir.q}}
{code}
CREATE TABLE fact_daily(x int) PARTITIONED BY (ds STRING);
CREATE TABLE fact_tz(x int) PARTITIONED BY (ds STRING, hr STRING)
LOCATION 'pfile:${system:test.tmp.dir}/fact_tz';

INSERT OVERWRITE TABLE fact_tz PARTITION (ds='1', hr='1')
SELECT key+11 FROM src WHERE key=484;

ALTER TABLE fact_daily SET TBLPROPERTIES('EXTERNAL'='TRUE');
ALTER TABLE fact_daily ADD PARTITION (ds='1')
LOCATION 'pfile:${system:test.tmp.dir}/fact_tz/ds=1';

set hive.mapred.supports.subdirectories=true;
set mapred.input.dir.recursive=true;
set hive.input.format=org.apache.hadoop.hive.ql.io.HiveInputFormat;

SELECT * FROM fact_daily WHERE ds='1';

SELECT count(1) FROM fact_daily WHERE ds='1';
{code}

The unit test doesn't seem to be concerned about list bucketing but wants to set {{mapred.input.dir.recursive}}
to {{true}}.

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