GitHub user chenghao-intel opened a pull request:
https://github.com/apache/spark/pull/4284
[SPARK-5454] [SQL] Fix duplicated exprId for self join the temp table
The output schema (attributes) of the temp table (the registered logical
plan) keeps the consistent `exprId`s after `ResolveReference`, in the `Self
Join` case, as they are actually the same object reference internally, and
hence it will causes ambiguous references downward.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/chenghao-intel/spark multiple_instances
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/4284.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 #4284
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commit 0b0ada840dbafdc940e73d11c187504ce4147b05
Author: Cheng Hao <[email protected]>
Date: 2015-01-30T00:46:16Z
Fix duplicated exprId for relations multiple referenced in a single
query(temp table)
commit 4f20a775b45c3dbc7da2f7b9433a238951776b3d
Author: Cheng Hao <[email protected]>
Date: 2015-01-30T01:26:17Z
scala style issues
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