Bug 1136109 - Improve SyncConsistentHashFactory key distribution
Summary: Improve SyncConsistentHashFactory key distribution
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: JBoss Data Grid 6
Classification: JBoss
Component: Infinispan
Version: 6.3.0
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ER2
: 6.3.1
Assignee: Tristan Tarrant
QA Contact: Martin Gencur
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-09-01 20:59 UTC by Dan Berindei
Modified: 2018-12-06 17:55 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Previously in Red Hat JBoss Data Grid, data distribution was unexpectedly uneven when using SyncConsistentHashFactory and TopologyAwareSyncConsistentHashFactory due to a problem that prevented these two classes from distributing the segments randomly between nodes as expected. This is now fixed in JBoss Data Grid 6.3.1. SyncConsistentHashFactory and TopologyAwareSyncConsistentHashFactory can now distribute data correctly so that each node is only given a certain percentage of data compared to other nodes. As a result, data is now distributed evenly between nodes.
Clone Of:
Environment:
Last Closed: 2015-01-26 14:04:57 UTC
Type: Bug
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Issue Tracker ISPN-4682 0 Major Closed Improve SyncConsistentHashFactory key distribution 2020-04-28 08:15:47 UTC

Description Dan Berindei 2014-09-01 20:59:28 UTC 
SyncConsistentHashFactory and TopologyAwareSyncConsistentHashFactory distribute the segments between nodes randomly, and the number of segments distributed to different nodes is not very even.

They should have a fail-safe mechanism to limit the variation in segment number between nodes.
Comment 4 Tristan Tarrant 2014-09-19 06:43:29 UTC 
Made public
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