tree c2f84e9e569e127e3f44c6d92635629d5ba6034f
parent 597285a1cd9cce00ddac4b461df70f6ef3d8e4d8
author Tim Armstrong <tarmstrong@cloudera.com> 1578012251 -0800
committer Tim Armstrong <tarmstrong@cloudera.com> 1578536481 +0000

IMPALA-9274: cyclic barrier implementation

This adds a synchronisation utility CyclicBarrier, which will be
used in IMPALA-9156 for orchestrating the hash join algorithm
with a shared build side and multiple hash join nodes.

Testing:
Add a unit test for the barier class.

Change-Id: Id5c8cc6b3023d2dc03c8116d462440c5e25c3bb0
Reviewed-on: http://gerrit.cloudera.org:8080/14973
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Reviewed-by: Tim Armstrong <tarmstrong@cloudera.com>