[ACCUMULO-3233] Random port for ZK in MiniAccumulo might not be unique

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.5.2, 1.6.1
• Fix Version/s: 1.6.2, 1.7.0
• Component/s: test
• Assignee: Josh Elser
• Reporter: Josh Elser
• Created: 14/Oct/14 20:57
• Updated: 06/Nov/14 17:10
• Resolved: 15/Oct/14 01:07

Description

To start ZooKeeper in a way that won't interfere with other processes on the node, we have to choose a "random" port on the node and then configure Accumulo with that port (as we don't have a means to get the random port that ZooKeeper itself would bind to).

The problem is that there is a delay between our choosing of a random port and ZooKeeper binding to that port which introduces a race condition.

Issue Links

• relates to: ACCUMULO-3269 nondeterministic failure of MiniAccumuloClusterStartStopTest
• relates to: ACCUMULO-3287 CyclicReplicationIT failed because it couldn't start ZK
• relates to: ACCUMULO-3306 Consider removing port-guess portion of PortUtils.getRandomFreePort