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From Sean Broeder <sean.broe...@esgyn.com>
Subject RE: [jira] [Created] (TRAFODION-1971) Redundant initialization slows down bulk load
Date Thu, 05 May 2016 00:05:51 GMT
Wow!  I had to read that twice :-)

-----Original Message-----
From: Dave Birdsall [mailto:dave.birdsall@esgyn.com]
Sent: Wednesday, May 4, 2016 4:44 PM
To: dev@trafodion.incubator.apache.org
Subject: RE: [jira] [Created] (TRAFODION-1971) Redundant initialization
slows down bulk load

Very nice find!

-----Original Message-----
From: Liu, Ming (Ming) [mailto:ming.liu@esgyn.cn]
Sent: Wednesday, May 4, 2016 4:41 PM
To: dev@trafodion.incubator.apache.org
Subject: 答复: [jira] [Created] (TRAFODION-1971) Redundant initialization
slows down bulk load

Increadible!!

-----邮件原件-----
发件人: Barry Fritchman (JIRA) [mailto:jira@apache.org]
发送时间: 2016年5月5日 2:47
收件人: issues@trafodion.incubator.apache.org
主题: [jira] [Created] (TRAFODION-1971) Redundant initialization slows down
bulk load

Barry Fritchman created TRAFODION-1971:
------------------------------------------

             Summary: Redundant initialization slows down bulk load
                 Key: TRAFODION-1971
                 URL: https://issues.apache.org/jira/browse/TRAFODION-1971
             Project: Apache Trafodion
          Issue Type: Bug
          Components: sql-exe
    Affects Versions: 2.0-incubating
            Reporter: Barry Fritchman


During the preparation phase of bulk load, HFIle parameter initialization is
performed redundantly following each flush. For a 52-million row table with
fairly wide rows, a load takes 3.5 hours vs 35-40 minutes when the
unnecessary re-initialization is avoided.



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