[jboss-jira] [JBoss JIRA] Resolved: (JBCLUSTER-280) Access to HAPartiiton membership is not thread-safe

Access to HAPartiiton membership is not thread-safe --------------------------------------------------- Key: JBCLUSTER-280 URL: https://jira.jboss.org/browse/JBCLUSTER-280 Project: JBoss Clustering Issue Type: Bug Security Level: Public(Everyone can see) Components: HA-Server-Core Reporter: Paul Ferraro Assignee: Brian Stansberry Fix For: HA-Server-Core 1.0.0.Beta1 There are 2 problems with the current implementation. 1. Currently, the membership collections, while synchronized, are both non-volatile and updated in a non-final fashion, so concurrent access by both view changes and rpc invocations is not thread-safe. 2. Membership is expressed in 4 different vectors. During view change, these vectors are not updated atomically. To address both problems, the 4 vectors ought to be encapsulated into a single volatile, immutable object.