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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-13090) Progress heartbeats for long running scanners
Date Fri, 17 Apr 2015 22:46:01 GMT

     [ https://issues.apache.org/jira/browse/HBASE-13090?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

stack updated HBASE-13090:
       Resolution: Fixed
    Fix Version/s:     (was: 1.2.0)
     Hadoop Flags: Reviewed
           Status: Resolved  (was: Patch Available)

Pushed to branch-1, branch-1.1, and master.  [~ndimiduk] I pushed it since you seem to want
it. Patch looks good to me and we'll be running tests over next week or so so if issue it'll
turn up... Thanks.

Thanks for the patch [~jonathan.lawlor]

> Progress heartbeats for long running scanners
> ---------------------------------------------
>                 Key: HBASE-13090
>                 URL: https://issues.apache.org/jira/browse/HBASE-13090
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Andrew Purtell
>            Assignee: Jonathan Lawlor
>             Fix For: 2.0.0, 1.1.0
>         Attachments: HBASE-13090-v1.patch, HBASE-13090-v2.patch, HBASE-13090-v3.patch,
HBASE-13090-v3.patch, HBASE-13090-v4.patch, HBASE-13090-v6.patch, HBASE-13090-v7.patch
> It can be necessary to set very long timeouts for clients that issue scans over large
regions when all data in the region might be filtered out depending on scan criteria. This
is a usability concern because it can be hard to identify what worst case timeout to use until
scans are occasionally/intermittently failing in production, depending on variable scan criteria.
It would be better if the client-server scan protocol can send back periodic progress heartbeats
to clients as long as server scanners are alive and making progress.
> This is related but orthogonal to streaming scan (HBASE-13071). 

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