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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3488) Allow RowCounter to retrieve multiple versions of rows
Date Fri, 18 Mar 2011 17:30:30 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13008529#comment-13008529
] 

Ted Yu commented on HBASE-3488:
-------------------------------

@Subbu:
>>     CF2 with columns c1,c2  (2 cells. c1=2 versions and c2=3 versions)
Can you rephrase the setup so that ck (k = 1..20) is uniquely associated with CF's ?

>> Number of distinct Cells = c1-c20 = 20
The term Cell isn't strictly defined in hbase. Here it means column. However, column is always
associated with some column family. I don't think it makes much sense listing CF1:c1 and CF2:c1
as one 'Cell'.


> Allow RowCounter to retrieve multiple versions of rows
> ------------------------------------------------------
>
>                 Key: HBASE-3488
>                 URL: https://issues.apache.org/jira/browse/HBASE-3488
>             Project: HBase
>          Issue Type: Bug
>          Components: util
>    Affects Versions: 0.90.0
>            Reporter: Ted Yu
>             Fix For: 0.92.0
>
>
> Currently RowCounter only retrieves latest version for each row.
> Some applications would store multiple versions for the same row.
> RowCounter should accept a new parameter for the number of versions to return.
> Scan object would be configured with version parameter (for scan.maxVersions).
> Then the following API should be called:
> {code}
>   public KeyValue[] raw() {
> {code}

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