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https://issues.apache.org/jira/browse/CASSANDRA-15406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17193502#comment-17193502
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Benjamin Lerer commented on CASSANDRA-15406:
--------------------------------------------

Some of the SSTable components are not. immutable The statistics contains the 
sstable level that can change. The index summary can also change when an index 
redistribution is performed. The index redistribution resize the index 
summaries in order to give more memory to hot sstables and less memory to cold 
sstables. 

> Show the progress of data streaming and index build 
> ----------------------------------------------------
>
>                 Key: CASSANDRA-15406
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-15406
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Consistency/Streaming, Legacy/Streaming and Messaging, 
> Tool/nodetool
>            Reporter: maxwellguo
>            Assignee: Stefan Miklosovic
>            Priority: Normal
>             Fix For: 4.0, 4.x
>
>          Time Spent: 3.5h
>  Remaining Estimate: 0h
>
> I found that we should supply a command to show the progress of streaming 
> when we do the operation of bootstrap/move/decommission/removenode. For when 
> do data streaming , noboday knows which steps there program are in , so I 
> think a command to show the joing/leaving node's is needed .
>  
> PR [https://github.com/apache/cassandra/pull/558]



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