You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@hive.apache.org by "Eric Hanson (JIRA)" <ji...@apache.org> on 2013/06/07 19:34:24 UTC
[jira] [Commented] (HIVE-4684) Query with filter constant on left
of "=" and column expression on right does not vectorize
[ https://issues.apache.org/jira/browse/HIVE-4684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13678189#comment-13678189 ]
Eric Hanson commented on HIVE-4684:
-----------------------------------
Similarly, this query does not vectorize:
select dmachineid, ((dmachineid + dmachineid) + 1) - dmachineid from factsqlengineam_vec_orc where 1073 = dmachineid + 1 + dmachineid - dmachineid;
> Query with filter constant on left of "=" and column expression on right does not vectorize
> -------------------------------------------------------------------------------------------
>
> Key: HIVE-4684
> URL: https://issues.apache.org/jira/browse/HIVE-4684
> Project: Hive
> Issue Type: Sub-task
> Components: Query Processor
> Reporter: Eric Hanson
>
> select dmachineid from factsqlengineam_vec_orc where 1073 = dmachineid + 1;
> Does not go down the vectorization path.
> Output:
> hive> select dmachineid from factsqlengineam_vec_orc where 1073 = dmachineid + 1;
> Total MapReduce jobs = 1
> Launching Job 1 out of 1
> Number of reduce tasks is set to 0 since there's no reduce operator
> Validating if vectorized execution is applicable
> Cannot vectorize the plan: org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.ClassNotFoundException: org.apache.hadoop.hiv
> e.ql.exec.vector.expressions.gen.FilterLongScalarEqualLongColumn
> Starting Job = job_201306061504_0038, Tracking URL = http://localhost:50030/jobdetails.jsp?jobid=job_201306061504_0038
> Kill Command = c:\Hadoop\hadoop-1.1.0-SNAPSHOT\bin\hadoop.cmd job -kill job_201306061504_0038
> Hadoop job information for Stage-1: number of mappers: 8; number of reducers: 0
> 2013-06-07 10:25:30,932 Stage-1 map = 0%, reduce = 0%
> 2013-06-07 10:25:39,953 Stage-1 map = 25%, reduce = 0%
> 2013-06-07 10:25:42,959 Stage-1 map = 49%, reduce = 0%, Cumulative CPU 8.172 sec
> 2013-06-07 10:25:43,962 Stage-1 map = 49%, reduce = 0%, Cumulative CPU 8.172 sec
> ...
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira