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https://issues.apache.org/jira/browse/CASSANDRA-5026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13510054#comment-13510054
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Jonathan Ellis commented on CASSANDRA-5026:
-------------------------------------------

Possible fixes include: 

# forcing compaction when we see the problem
# keeping a Map of shards we've logged it for and shutting up about it after 
the first time
# only logging it during compaction instead of the read path

(1) is conceptually simple but problematic for LCS.  (2) intertwines logging w/ 
server logic at a level that makes me uncomfortable.  Which leaves (3) as the 
best option IMO.
                
> Reduce log spam from counter shard warnings
> -------------------------------------------
>
>                 Key: CASSANDRA-5026
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5026
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>            Reporter: Jonathan Ellis
>            Assignee: Sylvain Lebresne
>            Priority: Minor
>             Fix For: 1.1.8
>
>
> The invalid counter shard warning we can get after unclean shutdown in 
> periodic commitlog mode or after node movement (CASSANDRA-4071) can spam the 
> log hard since it is logged once per read until compaction merges it away.

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