[ZOOKEEPER-3222] Flaky: multiple intermittent segfaults in C++ tests

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.5.4, 3.6.0, 3.4.13
• Fix Version/s: 3.6.0, 3.5.5
• Component/s: c client
• Labels: pull-request-available
• Assignee: Andor Molnar
• Reporter: Andor Molnar
• Created: 18/Dec/18 15:16
• Updated: 20/May/19 17:50
• Resolved: 03/Jan/19 14:58

Description

There're multiple places in C++ tests where zookeeper client handle (zkhandle_t) doesn't get closed correctly causing intermittent segmentations faults.
e.g. In multi threaded tests IO thread remains open in these client which could when trying to log something in a log file which is already closed by the test.
Another catch is when the test is trying to validate an already closed client: the client struct cannot be accessed after the memory has been freed.

Issue Links

• links to: GitHub Pull Request #740