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https://issues.apache.org/jira/browse/ACCUMULO-1209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13614406#comment-13614406
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Mike Drob commented on ACCUMULO-1209:
-------------------------------------

This is potentially related to ACCUMULO-806 as there _are_ empty tablets in the 
table. However, I think everything was working fine before and the empty 
tablets have likely been around for a while.
                
> Client cannot get tablet info for unknown reason
> ------------------------------------------------
>
>                 Key: ACCUMULO-1209
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-1209
>             Project: Accumulo
>          Issue Type: Bug
>          Components: master, tserver
>    Affects Versions: 1.4.2
>            Reporter: Mike Drob
>            Assignee: Eric Newton
>
> When attempting a map reduce over a tablet, I got the warning {{Unable to 
> locate bins for specified ranges. Retrying.}} from {{InputFormatBase}}. It 
> would keep retrying until I got bored and killed the job, never finding the 
> correct bins.
> I logged in to the Accumulo shell and was able to fully scan the 
> {{!METADATA}} table without a problem. However, when I try to scan my data 
> table (id: a), I saw the following messages repeated with debug on:
> {noformat}
> [impl.MetadataLocationObtainer] TRACE: tid=11 oid=7  Looking up in !0 row=a; 
> extent=!0;~;!0< tserver=[ip address]:9997
> [impl.MetadataLocationObtainer] TRACE: tid=11 oid=7  Got 0 results from 
> !0;~;!0< in 1.003 secs
> [impl.TabletLocatorImpl] TRACE: tid=11 oid=4  Located tablet null at null in 
> 1.058 secs
> [impl.ThriftScanner] DEBUG: Failed to locate tablet for table : a row :
> {noformat}
> I was able to work around this problem by cloning the table and using the 
> cloned version.

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