[jira] [Created] (CASSANDRA-7765) Don't use strict endpoint selection for range movements where RF == node count

["Sam Tunnicliffe (JIRA)" <ji...@apache.org>]

Sam Tunnicliffe created CASSANDRA-7765:
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             Summary: Don't use strict endpoint selection for range movements where RF == node count
                 Key: CASSANDRA-7765
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7765
             Project: Cassandra
          Issue Type: Bug
            Reporter: Sam Tunnicliffe
            Priority: Minor
         Attachments: 7765.txt

Post CASSANDRA-2434, we should skip strict endpoint selection for ranges  where RF == the number of nodes in the cluster otherwise we hit the following assertion in {{RangeStreamer.getAllRangesWithStrictSourcesFor}}

{code}
if (oldEndpoints.size() == strat.getReplicationFactor())
{
    oldEndpoints.removeAll(newEndpoints);
    assert oldEndpoints.size() == 1 : "Expected 1 endpoint but found " + oldEndpoints.size();
}
{code}

I think this is a fairly niche case, plus there's a workaround in the {{-Dcassandra.consistent.rangemovement=false}} option. 



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