[jira] [Created] (CASSANDRA-6481) Batchlog endpoint candidates should be picked randomly, not sorted by proximity

["Aleksey Yeschenko (JIRA)" <ji...@apache.org>]

Aleksey Yeschenko created CASSANDRA-6481:
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             Summary: Batchlog endpoint candidates should be picked randomly, not sorted by proximity
                 Key: CASSANDRA-6481
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6481
             Project: Cassandra
          Issue Type: Bug
            Reporter: Aleksey Yeschenko
            Assignee: Aleksey Yeschenko
             Fix For: 1.2.13, 2.0.4
         Attachments: 6481.txt

Batchlog endpoint candidates should be picked randomly, not sorted by proximity. I'll be lazy and just copy-paste some lines from IRC:

[20:23:27] rbranson:	 is there an issue where batch logs tend to get written to a subset of the nodes?
[20:28:04] rbranson:	 I mean all the write batches are going thru 10% of the nodes
[20:28:16] rbranson:	 it means writes won't scale linearly w/the cluster size

Attaching a trivial patch.



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