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https://issues.apache.org/jira/browse/HBASE-8012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13697923#comment-13697923
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Hudson commented on HBASE-8012:
-------------------------------
Integrated in HBase-0.94 #1032 (See
[https://builds.apache.org/job/HBase-0.94/1032/])
HBASE-8767 Backport hbase-8001 and hbase-8012, avoid lazy seek (original
patches by Raymond Liu) (Revision 1498953)
Result = SUCCESS
> Reseek should position to the beginning of file for the first time it is
> invoked with a KV smaller than the first KV in file
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-8012
> URL: https://issues.apache.org/jira/browse/HBASE-8012
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.94.5
> Reporter: Raymond Liu
> Assignee: Raymond Liu
> Priority: Minor
> Fix For: 0.98.0, 0.95.0
>
> Attachments: HBASE-8012.patch, HBASE-8012.patch, HBASE-8012_v2.patch
>
>
> The storeFileScanner's seekAtOrAfter method will position at the beginning of
> the file when the passed KV is smaller than first KV in file. While for
> reseekAtOrAfter, I think it should also do the same thing when it is the
> first time it been seeked. originally, this is workaround by adding a
> isReseekable property in StoreFileScanner, and is checked upon each
> enforceSeek(), if it is not seeked before, it will go with seek approaching
> instead of reseek approaching. While why not make reseekAtOrAfter working
> correctly for the first time it been reseek (also never been seek before),
> since the file is never seeked before, so position it at the beginning of the
> file don't break the idea of "reseek", say never rewind.
> It will save the effort for HBASE-8001, with this fixed, it won't need to
> check isReseekable any more.
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