https://issues.apache.org/jira/browse/TINKERPOP-2126
This PR replaces the `LinkedHashMap` used by `TraverserSet` with a `SynchronizedMap`. I haven't added a test case, cause I really don't know how to consistently provoke a `ConcurrentModificationException`; however, a `ConcurrentModificationException` did happen several times in a provider implementation and it was caused by the `TraverserSet::toString()` method while Spark was a) processing a query and b) concurrently logging the current state. The way `TraverserSet::toString()` is implemented, it totally makes sense that this scenario would sooner or later hit a `ConcurrentModificationException` if we don't use a synchronized map. `docker/build.sh -t -i` passed. VOTE +1 [ Full content available at: https://github.com/apache/tinkerpop/pull/1035 ] This message was relayed via gitbox.apache.org for [email protected]
