GitHub user clockfly opened a pull request:
https://github.com/apache/spark/pull/14968
[SPARK-17369][SQL][2.0] MetastoreRelation toJSON throws AssertException due
to missing otherCopyArgs
backport https://github.com/apache/spark/pull/14928 to 2.0
## What changes were proposed in this pull request?
`TreeNode.toJSON` requires a subclass to explicitly override otherCopyArgs
to include currying construction arguments, otherwise it reports
AssertException telling that the construction argument values' count doesn't
match the construction argument names' count.
For class `MetastoreRelation`, it has a currying construction parameter
`client: HiveClient`, but Spark forgets to add it to the list of otherCopyArgs.
## How was this patch tested?
Unit tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/clockfly/spark
metastore_toJSON_fix_for_spark_2.0
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14968.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 #14968
----
commit 0101f7ac0ec6a88c4f0ed8f77ac48c7470a4b41e
Author: Sean Zhong <seanzh...@databricks.com>
Date: 2016-09-06T02:50:07Z
[SPARK-17369][SQL] MetastoreRelation toJSON throws AssertException due to
missing otherCopyArgs
## What changes were proposed in this pull request?
`TreeNode.toJSON` requires a subclass to explicitly override otherCopyArgs
to include currying construction arguments, otherwise it reports
AssertException telling that the construction argument values' count doesn't
match the construction argument names' count.
For class `MetastoreRelation`, it has a currying construction parameter
`client: HiveClient`, but Spark forgets to add it to the list of otherCopyArgs.
## How was this patch tested?
Unit tests.
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