[jira] [Updated] (HBASE-10578) For the same row key, the KV in the newest StoreFile should be returned

["Andrew Purtell (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-10578?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Purtell updated HBASE-10578:
-----------------------------------

    Affects Version/s:     (was: 0.98.1)
                       0.98.2
                       0.99.0

> For the same row key, the KV in the newest StoreFile should be returned
> -----------------------------------------------------------------------
>
>                 Key: HBASE-10578
>                 URL: https://issues.apache.org/jira/browse/HBASE-10578
>             Project: HBase
>          Issue Type: Bug
>          Components: Scanners
>    Affects Versions: 0.89-fb, 0.99.0, 0.98.2
>            Reporter: Amitanand Aiyer
>            Assignee: Amitanand Aiyer
>            Priority: Minor
>             Fix For: 0.89-fb
>
>         Attachments: HBASE-10578-v2.patch, HBASE-10578.patch
>
>
> When multiple scanners have the same KV, HBase should pick the "newest" one.
> i.e. pick the KV from the store file with the largest seq id.
> In the KeyValueHeap generalizedSeek implementation, we seem to prefer the "current"
> scanner over the scanners in the heap -- THIS IS WRONG.
> The diff adds a unit test to make sure that bulk loads correctly. And fixes the issue.



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