GitHub user xuchuanyin opened a pull request:
https://github.com/apache/carbondata/pull/1825
[CARBONDATA-2032][DataLoad] directly write carbon data files to HDFS
Currently in data loading, carbondata write the final data files to local
disk and then copy it to HDFS.
For saving disk IO, carbondata can skip this procedure and directly write
these files to HDFS.
Be sure to do all of the following checklist to help us incorporate
your contribution quickly and easily:
- [x] Any interfaces changed?
`Only internal interfaces has been changed`
- [x] Any backward compatibility impacted?
`No`
- [x] Document update required?
`No`
- [x] Testing done
Please provide details on
- Whether new unit test cases have been added or why no new tests
are required?
`No`
- How it is tested? Please attach test report.
`Tested in local node and a 3-nodes cluster`
- Is it a performance related change? Please attach the performance
test report.
`Yes. The disk IO has decreased`
- Any additional information to help reviewers in testing this
change.
`No`
- [x] For large changes, please consider breaking it into sub-tasks under
an umbrella JIRA.
`Not related`
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/xuchuanyin/carbondata
0118_opt_write_data_files_directly_to_hdfs
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/carbondata/pull/1825.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 #1825
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commit fdced241cd5508d2fc7da457ed6e2e57dcaee4f1
Author: xuchuanyin <xuchuanyin@...>
Date: 2018-01-18T03:24:34Z
directly write carbon data files to HDFS
directly write carbon data files to hdfs to reduce disk I/O
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