Alper Tekinalp created IGNITE-4765:
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Summary: Different partition mapping for caches that use Fair
Affinity Function
Key: IGNITE-4765
URL: https://issues.apache.org/jira/browse/IGNITE-4765
Project: Ignite
Issue Type: Bug
Reporter: Alper Tekinalp
Caches created on different topology versions with fair affinity funtion may
have different partition mapping. The cause of this problem is fair affinity
function calculates partition mappings based on previous assignments. When
rebalancing partitions previous assignments for a cache is known and new
assignment calculated based on that. But when you create a new cache there is
no previous assignments and the calculation is different.
Reproduction steps:
- Start node1
- Start cache1
- Start node2
- Partitions for cache1 will be rebalanced
- Start cache2
- Check partition mapping for both cache1 and cache2
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