Allow custom hadoop properties to be loaded in the Spark data source#7

Merged

rdblue merged 9 commits intoapache:masterfrom

mccheah:custom-hadoop-properties

Dec 14, 2018

Commits on Nov 19, 2018

Allow custom hadoop properties to be loaded in the Spark data source.
mccheah
committed

Commits on Nov 26, 2018

Merge remote-tracking branch 'mccheah-incubator/master' into HEAD
mccheah
committed

Commits on Nov 27, 2018

Reuse Hadoop configuration in second case where it's thread-safe to do so.
mccheah
committed

Commits on Dec 10, 2018

Merge remote-tracking branch 'upstream-incubator/master' into custom-hadoop-properties
mccheah
committed