GitHub user Weixin-Xu opened a pull request:
https://github.com/apache/incubator-trafodion/pull/1121
[TRAFODION-2346] ODB copy incorrect rows when using rowset and parallel
fix jira TRAFODION-2346 and TRAFODION-2373 bug as follows:
When using parallel, max rows/ parallel will cause rows cutting because of
divisibility.
When using rowset, per thread rows/rowset will cause one more round
contained the same rowset.
For example, rows = 5000 ,max = 500000 ,parallel = 6 :
per thread rows(size_t) = max rows / parallel = 500000 / 6 = 83333
round = per thread rows / rowset = 83333 / 5000 = 16 (actually do one more
round)
Finally , 5000 * 17 * 6 = 510000 rows will be load and copy
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Weixin-Xu/incubator-trafodion odbtest
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-trafodion/pull/1121.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1121
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commit 0abe062c2ce5150ab36344434129d9864c9fea3f
Author: Weixin Xu <[email protected]>
Date: 2017-06-16T02:44:53Z
[TRAFODION-2346] ODB copy incorrect rows when using rowset and parallel
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