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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3488) Allow RowCounter to retrieve multiple versions of rows
Date Mon, 04 Apr 2011 18:29:05 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13015534#comment-13015534
] 

stack commented on HBASE-3488:
------------------------------

I'm going to apply this (will wait a little in case Ted wants to do a last review).

I will also add it to our 'driver' so it shows as one of the MR jobs hbase ships with; see
src/main/java/org/apache/hadoop/hbase/mapreduce/Driver.java

Subbu, for future, its 2011 when it comes to copyright notices in src files (smile) but also,
by convention we wrap lines at 80 characters.  I can fix this on commit, np, but just going
forward.



> 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
>
>         Attachments: 3488-Allow_RowCounter_to_retrieve_multiple_versions_of_rows-version2.patch,
3488-Allow_RowCounter_to_retrieve_multiple_versions_of_rows.patch
>
>
> 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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