GitHub user gatorsmile opened a pull request:
https://github.com/apache/spark/pull/10484
[SPARK-12520] [PySpark] [1.5] Ensure the join type is `inner` for
equi-Join.
This PR is to add `assert` to ensure the join type is `inner` for
equi-Join.
JIRA: https://issues.apache.org/jira/browse/SPARK-12520
In the JIRA, users specify the join type `outer` when using the equi-join.
However, the result we returned is the `inner` join, which is the only type
Spark 1.5 supports. (Note, starting from Spark 1.6, we can support the other
types for equi-join).
For example,
```scala
joined_table = left_table.join(right_table, "joining_column", "outer")
```
Should we also back port it to 1.4? @davies @JoshRosen Thanks!
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gatorsmile/spark pythonEquiOuterJoin
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10484.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 #10484
----
commit 4a392dd8cd5072c913d2e886e42aad86172d2f66
Author: gatorsmile <[email protected]>
Date: 2015-12-26T18:16:54Z
add assert.
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