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https://issues.apache.org/jira/browse/CASSANDRA-15164?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17200986#comment-17200986
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Jon Meredith commented on CASSANDRA-15164:
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I'd support increasing the number of buckets and keeping the changes to 
continue to operate if there is an overflow.  Looks like the histogram #buckets 
is written by the serializer so no compatibility concerns with the file formats.

> Overflowed Partition Cell Histograms Can Prevent Compactions from Executing
> ---------------------------------------------------------------------------
>
>                 Key: CASSANDRA-15164
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15164
>             Project: Cassandra
>          Issue Type: Bug
>          Components: CQL/Interpreter
>            Reporter: Ankur Jha
>            Assignee: Caleb Rackliffe
>            Priority: Urgent
>              Labels: compaction, partition
>             Fix For: 4.0-beta
>
>          Time Spent: 2h 20m
>  Remaining Estimate: 0h
>
> Hi, we are running 6 node Cassandra cluster in production with 3 seed node 
> but from last night one of our seed nodes is continuously throwing an error 
> like this;-
> cassandra.protocol.ServerError: <Error from server: code=0000 [Server error] 
> message="java.lang.IllegalStateException: Unable to compute ceiling for max 
> when histogram overflowed">
> For a cluster to be up and running I Drained this node.
> Can somebody help me out with this?
>  
> Any help or lead would be appreciated 
>  
> Note : We are using Cassandra version 3.7



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