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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2016/07/18 21:31:20 UTC
[jira] [Commented] (HBASE-14549) Simplify scanner stack reset logic
[ https://issues.apache.org/jira/browse/HBASE-14549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15383114#comment-15383114 ]
stack commented on HBASE-14549:
-------------------------------
So, this stuff is no longer complex? Nothing to do based off your findings [~lhofhansl]?
> Simplify scanner stack reset logic
> ----------------------------------
>
> Key: HBASE-14549
> URL: https://issues.apache.org/jira/browse/HBASE-14549
> Project: HBase
> Issue Type: Bug
> Reporter: Lars Hofhansl
> Assignee: Lars Hofhansl
> Attachments: 14549-0.98.txt
>
>
> Looking at the code, I find that the logic is unnecessarily complex.
> We indicate in updateReaders that the scanner stack needs to be reset. Then almost all store scanner (and derived classes) methods need to check and actually reset the scanner stack.
> Compaction are rare, we should reset the scanner stack in update readers, and hence avoid needing to check in all methods.
> Patch forthcoming.
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