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https://issues.apache.org/jira/browse/HBASE-18394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16129501#comment-16129501
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Ethan Wang commented on HBASE-18394:
------------------------------------

[~ted_yu]For example, for storing naive time series data, my row key looks like:

{code:java}
Scope.Metric.Timestamp
{code}

In this case, there are "three levels" of prefix
Scope
Metric
TimeStamp.

Rather than 
S, Sc, Sco, Scop, ....

> Allowing user to define levels of prefix of Rowkey to be also put into 
> BloomFilter
> ----------------------------------------------------------------------------------
>
>                 Key: HBASE-18394
>                 URL: https://issues.apache.org/jira/browse/HBASE-18394
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Ethan Wang
>
> For Time Series data, one common use case is get/scan by prefix of a row key. 
> Such as:
> RowKey:    Scope.Metric.TimeStamp    
> Search by:  Scope*
> In these case bloom filter is not leveraged. However if we store every prefix 
> of row key into bloomfilter that will be a big over head. Let user to store 
> only the prefix of certain level will be a good thing to have
>  



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