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Posted to dev@giraph.apache.org by "Abdelrahman Fouda (JIRA)" <ji...@apache.org> on 2019/05/14 13:46:00 UTC
[jira] [Created] (GIRAPH-1220) Overwrite aggregators are no stable.
Abdelrahman Fouda created GIRAPH-1220:
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Summary: Overwrite aggregators are no stable.
Key: GIRAPH-1220
URL: https://issues.apache.org/jira/browse/GIRAPH-1220
Project: Giraph
Issue Type: Bug
Reporter: Abdelrahman Fouda
Although my code only updates the overwritable aggregator only by the master, tracking the aggregator implementation lead me to the following scenario:
1- master writes to aggregator
2- aggregator value is aggregated with the values received from other workers/partitions
Therefore, the value written by the master is overwritten by the reduced values received in the method
MasterAggregatorHandler.acceptReducedValues()
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