Avery Ching created GIRAPH-302:
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Summary: Thread safety issue with sending partitions around
Key: GIRAPH-302
URL: https://issues.apache.org/jira/browse/GIRAPH-302
Project: Giraph
Issue Type: Bug
Environment: When calling sendPartitionRequest(), we clear the vertex
list afterward, making it a race!
I noticed this when I was running with 300 workers and the number of edges
wasn't what I expected. Sometimes we get empty requests!
After digging into the code I found the issue and have fixed it.
Giraph Stats Aggregate edges 99,971,220 0 99,971,220
Superstep 11 0 11
Current workers 300 0 300
Last checkpointed superstep 0 0 0
Current master task partition 0 0 0
Sent messages 0 0 0
Aggregate finished vertices 10,000,000 0 10,000,000
Aggregate vertices 10,000,000 0 10,000,000
This is wrong!
Giraph Stats Aggregate edges 100,000,000 0 100,000,000
Superstep 11 0 11
Last checkpointed superstep 0 0 0
Current workers 300 0 300
Current master task partition 0 0 0
Sent messages 0 0 0
Aggregate finished vertices 10,000,000 0 10,000,000
Aggregate vertices 10,000,000 0 10,000,000
Fixed!
Reporter: Avery Ching
Assignee: Avery Ching
Priority: Critical
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