GitHub user cxzl25 opened a pull request:
https://github.com/apache/spark/pull/21364
[SPARK-20173][SQL]Float-point numbers are displayed with different
precision in ThriftServer2
## What changes were proposed in this pull request?
When querying float-point numbers , the values displayed on beeline or jdbc
are with different precision.
```
SELECT CAST(1.23 AS FLOAT)
Result:
1.2300000190734863
```
According to these two jira:
[HIVE-11802](https://issues.apache.org/jira/browse/HIVE-11802)
[HIVE-11832](https://issues.apache.org/jira/browse/HIVE-11832)
Make a slight modification to the spark hive thrift server.
## How was this patch tested?
HiveThriftBinaryServerSuite
test("JDBC query float-point number")
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cxzl25/spark fix_float_number_display
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21364.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 #21364
----
commit 137abed62a75ea453a0d3c8436d9aa08b9abee36
Author: sychen <sychen@...>
Date: 2018-05-18T15:39:35Z
Float-point numbers are displayed with different precision in Beeline/JDBC
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