tree b7be7f746a5fadcefd11da5a83f782b6beabe4d2
parent dd8514fa2059a695143073f852b1abee50e522bd
author Maciej Brynski <maciej.brynski@adpilot.pl> 1470150428 -0700
committer Sean Owen <sowen@cloudera.com> 1470150428 -0700

[SPARK-15541] Casting ConcurrentHashMap to ConcurrentMap (master branch)

## What changes were proposed in this pull request?

Casting ConcurrentHashMap to ConcurrentMap allows to run code compiled with Java 8 on Java 7

## How was this patch tested?

Compilation. Existing automatic tests

Author: Maciej Brynski <maciej.brynski@adpilot.pl>

Closes #14459 from maver1ck/spark-15541-master.