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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10531) Revisit how the key byte[] is passed to HFileScanner.seekTo and reseekTo
Date Fri, 14 Mar 2014 11:45:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13934903#comment-13934903
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ramkrishna.s.vasudevan commented on HBASE-10531:
------------------------------------------------

bq.Shouldn't this be unsupportedoperationexception in your new key only class?
For the value part we can throw UnSupportedException but for the Tag part we cannot because
in the latest comparisons we do we also compare the seqid added during WAL replay which is
inside a tag.  So to find an exact key we may end up comparing the tag with seqid also.

> Revisit how the key byte[] is passed to HFileScanner.seekTo and reseekTo
> ------------------------------------------------------------------------
>
>                 Key: HBASE-10531
>                 URL: https://issues.apache.org/jira/browse/HBASE-10531
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 0.99.0
>
>         Attachments: HBASE-10531.patch, HBASE-10531_1.patch, HBASE-10531_2.patch
>
>
> Currently the byte[] key passed to HFileScanner.seekTo and HFileScanner.reseekTo, is
a combination of row, cf, qual, type and ts.  And the caller forms this by using kv.getBuffer,
which is actually deprecated.  So see how this can be achieved considering kv.getBuffer is
removed.



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