GitHub user alicegugu opened a pull request:
https://github.com/apache/spark/pull/14218
[SPARK-16563][SQL] fix spark sql thrift server FetchResults bug
## What changes were proposed in this pull request?
Add a constant iterator which point to head of result. The header will be
used to reset iterator when fetch result from first row repeatedly.
## How was this patch tested?
This bug was found when using Cloudera HUE connecting to spark sql thrift
server, currently SQL statement result can be only fetched for once. The fix
was tested manually with Cloudera HUE, With this fix, HUE can fetch spark SQL
results repeatedly through thrift server.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/alicegugu/spark SparkSQLFetchResultsBug
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14218.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 #14218
----
commit a93954179a49fd5c31600062e03f71831466c4ff
Author: Alice <g...@garena.com>
Date: 2016-07-15T06:13:52Z
[SPARK-16563][SQL] fix spark sql thrift server ExecuteStatementOperation
FetchResults bug
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