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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18786) FileNotFoundException should not be silently handled for primary region replicas
Date Sat, 23 Sep 2017 16:07:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16177862#comment-16177862
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Andrew Purtell commented on HBASE-18786:
----------------------------------------

It should be removed IMHO

> FileNotFoundException should not be silently handled for primary region replicas
> --------------------------------------------------------------------------------
>
>                 Key: HBASE-18786
>                 URL: https://issues.apache.org/jira/browse/HBASE-18786
>             Project: HBase
>          Issue Type: Sub-task
>          Components: regionserver, Scanners
>            Reporter: Ashu Pachauri
>            Assignee: Andrew Purtell
>             Fix For: 2.0.0, 3.0.0, 1.4.0, 1.3.2, 1.5.0
>
>         Attachments: HBASE-18786-branch-1.patch, HBASE-18786-branch-1.patch, HBASE-18786.patch,
HBASE-18786.patch
>
>
> This is a follow up for HBASE-18186.
> FileNotFoundException while scanning from a primary region replica can be indicative
of a more severe problem. Handling them silently can cause many underlying issues go undetected.
We should either
> 1. Hard fail the regionserver if there is a FNFE on a primary region replica, OR
> 2. Report these exceptions as some region / server level metric so that these can be
proactively investigated.



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