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[GitHub] carbondata pull request #1829: [CARBONDATA-2050] Add example of query data w...

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qiuchenjian-2

[GitHub] carbondata pull request #1829: [CARBONDATA-2050] Add example of query data w...

GitHub user chenliang613 opened a pull request:

https://github.com/apache/carbondata/pull/1829

[CARBONDATA-2050] Add example of query data with specified segments

Add example of query data with specified segments and also consider compaction sceanrios.

Be sure to do all of the following checklist to help us incorporate
your contribution quickly and easily:

- [X] Any interfaces changed?
NA
- [X] Any backward compatibility impacted?
NA
- [X] Document update required?
YES
- [X] Testing done
YES

- [X] For large changes, please consider breaking it into sub-tasks under an umbrella JIRA.
NA

You can merge this pull request into a Git repository by running:

$ git pull https://github.com/chenliang613/carbondata querysegment

Alternatively you can review and apply these changes as the patch at:

https://github.com/apache/carbondata/pull/1829.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 #1829

----
commit f778c024802559dd06ea233a5244ca01ed1c5530
Author: chenliang613 <chenliang613@...>
Date: 2018-01-18T07:50:23Z

[CARBONDATA-2050] Add example of query data with specified segments

----

---

qiuchenjian-2

[GitHub] carbondata pull request #1829: [CARBONDATA-2050] Add example of query data w...

Github user QiangCai commented on a diff in the pull request:

https://github.com/apache/carbondata/pull/1829#discussion_r162285426

--- Diff: docs/data-management-on-carbondata.md ---
@@ -781,59 +781,39 @@ This tutorial is going to introduce all commands and data operations on CarbonDa
```
DELETE FROM TABLE CarbonDatabase.CarbonTable WHERE SEGMENT.STARTTIME BEFORE '2017-06-01 12:05:06'
```
-### SEGMENT READING
+
+### QUERY DATA WITH SPECIFIED SEGMENTS

This command is used to read data from specified segments during CarbonScan.

-
Get the Segment ID:
-
```
SHOW SEGMENTS FOR TABLE [db_name.]table_name LIMIT number_of_segments
```

- Set the segment IDs
-
+ Set the segment IDs for table
```
- SET cabon.input.segments.<database_name>.<table_name> = <list of segment IDs>;
+ SET cabon.input.segments.<database_name>.<table_name> = <list of segment IDs>
--- End diff --

cabon => carbon

---

qiuchenjian-2