GitHub user liancheng opened a pull request:
https://github.com/apache/spark/pull/5265
[SPARK-6608] [SQL] Makes DataFrame.rdd a lazy val
Before 1.3.0, `SchemaRDD.id` works as a unique identifier of each
`SchemaRDD`. In 1.3.0, unlike `SchemaRDD`, `DataFrame` is no longer an RDD, and
`DataFrame.rdd` is actually a function which always returns a new RDD instance.
Making `DataFrame.rdd` a lazy val should bring the unique identifier back.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/liancheng/spark spark-6608
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/5265.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 #5265
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commit 7f37d2142a388e5717ae2c3e89152c8c735904cc
Author: Cheng Lian <[email protected]>
Date: 2015-03-30T12:34:32Z
Makes DataFrame.rdd a lazy val
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