Dan Berindei created ISPN-4587: ---------------------------------- Summary: Re-add old owners in the pending CH when a node leaves during rebalance Key: ISPN-4587 URL: https://issues.jboss.org/browse/ISPN-4587 Project: Infinispan Issue Type: Enhancement Security Level: Public (Everyone can see) Components: Core, State Transfer Affects Versions: 7.0.0.Alpha5 Reporter: Dan Berindei Assignee: Dan Berindei Priority: Minor Fix For: 7.0.0.Beta1 Say we have a distributed cache \[A, B\] with {{numSegments = 1}} and {{numOwners = 2}}. The initial topology is _T_: currentCH = {0: A B}, pendingCH = null C joins, and A starts a rebalance. The topology is now _T + 1_: currentCH = {0: A B}, pendingCH = {0: A C} C now leaves, A updates the consistent hashes to remove it with a new topology _T + 2: currentCH = {0: A B}, pendingCH = {0: A} A doesn't need to receive any data, so the rebalance ends and the pending CH is installed as the current CH in topology _T + 3_: currentCH = {0: A}, pendingCH = null This algorithm is relatively easy to follow and implement, but it does result in reduced availability of the cache data. It would be better if topology _T + 2_ could re-add B as an owner in the pending CH. -- This message was sent by Atlassian JIRA (v6.2.6#6264)