[jira] [Updated] (HIVE-2072) test

["YoungYik (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-2072?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

YoungYik updated HIVE-2072:
---------------------------

          Component/s:     (was: CLI)
          Description:     (was: I create two views from one table of different partitions, and join these two views in my query, it just use 1 reducer and the tasks stay in 82% for a long time, and then failed.

So, I use set hive.exec.reducers.max=28 before the execution of query, when select on joined tables, it works, but still keep saying "Number of reduce tasks determined at compile time: 1" when on the two joined views:


1)hive -e "create view view_1(uname, login) as select uname,'this30d' from userlist where domain='$domain' and year=$YYYY and month=$MM and day=$DD and type='all' and period_days=30;"

2)hive -e "create view view_0(uname, login) as select uname,'last30d' from userlist where domain='$domain' and year=$YYYY and month=$MM and day=$DD and type='all' and period_days=30;"

3)hive -e "set mapred.reduce.tasks=28; set; select v0.login,v1.login,count(*) from view_0 v0 full outer join view_1 v1 group by v0.login,v1.login; set;"

then the output:

Total MapReduce jobs = 2
Launching Job 1 out of 2
Number of reduce tasks determined at compile time: 1
In order to change the average load for a reducer (in bytes):
  set hive.exec.reducers.bytes.per.reducer=<number>
In order to limit the maximum number of reducers:
  set hive.exec.reducers.max=<number>
In order to set a constant number of reducers:
  set mapred.reduce.tasks=<number>

and at last, it just still keep using 1 reducer in this query.
but if I use "set;" to print the environment, it tells me:

mapred.reduce.tasks=28)
             Priority: Trivial  (was: Major)
          Environment:     (was: Linux 2.6.18-128.el5 x86_64 GNU/Linux, JRE 1.6.0_14)
    Affects Version/s:     (was: 0.6.0)
           Issue Type: Test  (was: Bug)
              Summary: test  (was: set hive.exec.reducers.max=<number> is not working to view)

> test
> ----
>
>                 Key: HIVE-2072
>                 URL: https://issues.apache.org/jira/browse/HIVE-2072
>             Project: Hive
>          Issue Type: Test
>            Reporter: YoungYik
>            Priority: Trivial
>


--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira