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https://issues.apache.org/jira/browse/HBASE-1112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12667444#action_12667444
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stack commented on HBASE-1112:
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oh... .didn't realize.  Thats good.  One dir per server.   No harm moving all 
these into a subdir though I'd say, named @LOG@ or @LOGS@ as Samuel suggests.

Also, yes, highly unlikely that there'd be a table with a clashing name but I 
suppose no harm doing the little work to ensure it doesn't happen.

> we will lose data if the table name happens to be the logs' dir name
> --------------------------------------------------------------------
>
>                 Key: HBASE-1112
>                 URL: https://issues.apache.org/jira/browse/HBASE-1112
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: Samuel Guo
>            Priority: Minor
>             Fix For: 0.20.0
>
>         Attachments: HBASE-1112.patch
>
>
> If the tablename happens to equal with the logs' dir name of a certain 
> regionserver, the table will store table's data into the same dir in HDFS 
> shared with the regionserver's log dir. If the specified region server fails, 
> the dir may be removed after the logs are replayed. And here, we lose the 
> data.
> I suggest that a special char like '_' could be added before the logdir's 
> name, just as what root region and meta region have done. So we can prevent 
> the user table's data from being stored in a log dir. for example, 
> 'log_10.132.15.1_1231465024534_60020' will be changed to 
> '_log_10.132.15.1_1231465024534_60020'.

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