[ACCUMULO-2128] Provide resource cleanup via static utility rather than Instance.close

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 1.4.5, 1.5.1, 1.6.0
• Component/s: client
• Assignee: Keith Turner
• Reporter: Sean Busbey
• Created: 02/Jan/14 23:18
• Updated: 07/Jan/14 02:50
• Resolved: 07/Jan/14 02:11

Description

After discussion about the current state of our code base and the need to properly clean up global resources, consensus is that we need to provide a work around for now that doesn't rely on API changes.

Later, when we refactor the client api we'll include proper lifecycle management, for now we just need a global utility for unloading.

This ticket needs to revert all commits from the Instance close work: ACCUMULO-1379, ACCUMULO-1697, ACCUMULO-1858, ACCUMULO-2027, ACCUMULO-1889, and ACCUMULO-2105

Also ACCUMULO-1923 can be closed as wontfix with a link here.

Then we need a version of the solution outlined in ACCUMULO-2113 that does not rely on reflection, if possible.

Issue Links

• depends upon: ACCUMULO-2113 Verify that The Hammer approach to resource leak is a viable short term fix
• supercedes: ACCUMULO-1379 PermGen leak
• supercedes: ACCUMULO-1923 Ensure ZK instances closed correctly