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https://issues.apache.org/jira/browse/CASSANDRA-11409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15976268#comment-15976268
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翟玉勇 commented on CASSANDRA-11409:
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这个不是bug，
那个Read-repair DC_LOCAL是每次操作读取system_auth keyspace
的表时候dclocal_read_repair_chance = 0.1时候触发的，只不过把读取权限表的trace信息显示上去了
> set read repair chance to 0 but find read repair process in trace
> -----------------------------------------------------------------
>
> Key: CASSANDRA-11409
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11409
> Project: Cassandra
> Issue Type: Bug
> Components: CQL, Distributed Metadata
> Environment: Cassandra 2.1.13 with centos 7
> Reporter: Ryan Cho
> Labels: lhf
> Attachments: 螢幕快照 2016-03-23 下午2.06.10.png
>
>
> I have set dclocal_read_repair_chance and read_repair_chance to 0.0 for one
> month, but I still find "Read-repair DC_LOCAL" and "Initiating read-repair"
> activities in system_trace.events, and query was executed in these two days
> and long time after set read repair chance to 0.0
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