[infinispan-issues] [JBoss JIRA] (ISPN-4310) StateResponse chunk with lastChunk=true from cancelled ST stops receiving data in next ST

[Radim Vansa (JIRA)]

Radim Vansa created ISPN-4310:
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             Summary: StateResponse chunk with lastChunk=true from cancelled ST stops receiving data in next ST
                 Key: ISPN-4310
                 URL: https://issues.jboss.org/browse/ISPN-4310
             Project: Infinispan
          Issue Type: Bug
          Components: State Transfer
    Affects Versions: 7.0.0.Alpha4, 6.0.2.Final
            Reporter: Radim Vansa
            Assignee: Dan Berindei
            Priority: Critical


1. A requests segment from B (there are multiple chunks)
2. B sends all chunks, but before A receives them, new topology arrives and A cancels the ST.
3. Another topology comes and A requests this segment again
4. A receives the old StateResponseCommand with lastChunk=true and thinks that it got all segments, therefore, it discards further chunks.

Result is inconsistent cluster, and after further rebalances completely lost data.
This ought to be rare, but was repeatedly observed when gracefully stopping coordinator on a 32-node cluster full of data.



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