You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@hbase.apache.org by "ryan rawson (JIRA)" <ji...@apache.org> on 2010/04/05 23:26:27 UTC
[jira] Resolved: (HBASE-2162) scanners need to obey row locks, a
modest propsal
[ https://issues.apache.org/jira/browse/HBASE-2162?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ryan rawson resolved HBASE-2162.
--------------------------------
Resolution: Invalid
implemented/obsoleted by HBASE=-2248
> scanners need to obey row locks, a modest propsal
> -------------------------------------------------
>
> Key: HBASE-2162
> URL: https://issues.apache.org/jira/browse/HBASE-2162
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: ryan rawson
> Assignee: ryan rawson
> Fix For: 0.21.0
>
>
> 15:54 < dj_ryan> - next:
> 15:54 < dj_ryan> do next on Tree in memstore get rowid
> 15:55 < dj_ryan> acquire read lock on rowid (wait if necessary)
> 15:55 < dj_ryan> snapshot the entire row worth of data from memstore into scanner
> 15:55 < dj_ryan> release read lock on rowid
> 15:56 < dj_ryan> so if we get an insert on a row after the 'do next' which would call 'next' on the
> previous last value grabbed from the tree
> 15:56 < dj_ryan> we'd skip that one
> 15:56 < dj_ryan> which is fine
> 15:57 < dj_ryan> i guess the issue comes in when you have to next a bunch to get to the next row
> 15:57 < dj_ryan> but that is doable with a simple little while loop
> 15:57 < dj_ryan> this only applies to memstore
> 15:57 < dj_ryan> snapshot = hfile
> 15:57 < dj_ryan> since its immutable
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.