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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HBASE-1609) [part of hbase-1583] We wait on leases to expire before regionserver goes down. Rather, just let client fail
Date Fri, 17 Jul 2009 04:39:14 GMT

     [ https://issues.apache.org/jira/browse/HBASE-1609?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack resolved HBASE-1609.
--------------------------

      Resolution: Fixed
    Release Note: No more trying to be sweet to clients.  If admin wants cluster to go down,
we go down and let the clients each EOFExceptions (because RPC was cutoff midways) and failed
connect type exceptions.  Puts take out a row lock so should make it in before their Region
closes (though if part of a batch, all in batch are not guaranteed to make it in)
    Hadoop Flags: [Reviewed]

Committed to branch and trunk.

> [part of hbase-1583] We wait on leases to expire before regionserver goes down.  Rather,
just let client fail
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-1609
>                 URL: https://issues.apache.org/jira/browse/HBASE-1609
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: stack
>            Assignee: stack
>             Fix For: 0.20.0
>
>         Attachments: 1609-v2.patch, 1609.patch
>
>
> Addressing this issue will help hbase-1583.  We should do for 0.20.0 and perhaps for
0.19.x even.
> Currently, if outstanding leases, in HRegion close, we'll hang until lease expires. 
Could be a minute.  Could be worse, the client might come in and renew the lease a few times
at least till it finishes out the region.  This gets in way of regionserver shutting down
fast.  
> J-D suggests that regionserver should just go down and outstanding clients should fail
rather than try and be nice to outstanding clients (in his case, his MR job had failed so
no clients... but we insist on lease expiring).

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