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https://issues.apache.org/jira/browse/HBASE-1609?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-1609:
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Attachment: 1609.patch
Here is a patch for the serverside. It removes all the fancy scanner counting
we used do.
In testing, serverside logs seem fine when outstanding scanner..... scanners
start to get notserveringregionexception as the regions go down.
Client-side though goes crazy.... retries of zk and retries of scanner stuff.
Need to clean up client handling of this case before can commit, i'd suggest.
> [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
> Fix For: 0.20.0
>
> Attachments: 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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