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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18220) Compaction scanners need not reopen storefile scanners while trying to switch over from pread to stream
Date Fri, 16 Jun 2017 06:37:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16051462#comment-16051462
] 

ramkrishna.s.vasudevan commented on HBASE-18220:
------------------------------------------------

That may be not right in case the Coprocs are creating their own scanners. So we should decide
in StoreScanner only. Only scanType is fixed here.

> Compaction scanners need not reopen storefile scanners while trying to switch over from
pread to stream
> -------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-18220
>                 URL: https://issues.apache.org/jira/browse/HBASE-18220
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Compaction
>    Affects Versions: 2.0.0, 3.0.0, 2.0.0-alpha-1
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 2.0.0, 3.0.0, 2.0.0-alpha-2
>
>         Attachments: HBASE-18220.patch
>
>
> We try switch over to stream scanner if we have read more than a certain number of bytes.
In case of compaction we already have stream based scanners only and but on calling shipped()
we try to again close and reopen the scanners which is unwanted. 
> [~Apache9]



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