Aaron McCurry created BLUR-260:
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Summary: Rework shard layout strategy
Key: BLUR-260
URL: https://issues.apache.org/jira/browse/BLUR-260
Project: Apache Blur
Issue Type: Improvement
Components: Blur
Affects Versions: 0.3.0, 0.2.1
Reporter: Aaron McCurry
Priority: Blocker
Fix For: 0.3.0, 0.2.1
This issue is to resolve the excessive movement of shards during a failure as
well as when a new shard server is brought online.
This current strategy uses the knowledge of the current online shard server
list as well as the total of list of shard server to calculate the location any
given shard. The benefit of the current implementation is that no central
process is needed to calculate the locations. However the drawback to this
strategy is that when a new server is added to the available servers, it can
cause most of the shards of a given table to relocate to another server.
Obviously this is a problem when new servers come online and added to the
cluster regularly.
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