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https://issues.apache.org/jira/browse/HBASE-18049?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jingcheng Du updated HBASE-18049:
---------------------------------
    Description: 
In HBASE-17712, we try to re-open the region when store files cannot be found. 
This is useful for store files in a region, but is not necessary when the MOB 
files cannot be found, because the store files in a region only contain the 
references to the MOB files and a re-open of a region doesn't help the lost MOB 
files.
In this JIRA, we will directly throw DNRIOE only when the MOB files are not 
found in {{MobStoreScanner}} and {{ReversedMobStoreScanner}}. Other logics keep 
the same.

  was:
In HBASE-17712, we try to re-open the region when store files cannot be found. 
This is useful for store files in a region, but is not necessary when the MOB 
files cannot be found because the store files in a region only contain the 
references to the MOB files.
In this JIRA, we will directly throw DNRIOE only when the MOB files are not 
found in {{MobStoreScanner}} and {{ReversedMobStoreScanner}}. Other logics keep 
the same.


> It is not necessary to re-open the region when MOB files cannot be found
> ------------------------------------------------------------------------
>
>                 Key: HBASE-18049
>                 URL: https://issues.apache.org/jira/browse/HBASE-18049
>             Project: HBase
>          Issue Type: Bug
>          Components: Scanners
>            Reporter: Jingcheng Du
>            Assignee: Jingcheng Du
>             Fix For: 2.0.0
>
>         Attachments: HBASE-18049.patch
>
>
> In HBASE-17712, we try to re-open the region when store files cannot be 
> found. This is useful for store files in a region, but is not necessary when 
> the MOB files cannot be found, because the store files in a region only 
> contain the references to the MOB files and a re-open of a region doesn't 
> help the lost MOB files.
> In this JIRA, we will directly throw DNRIOE only when the MOB files are not 
> found in {{MobStoreScanner}} and {{ReversedMobStoreScanner}}. Other logics 
> keep the same.



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