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Posted to dev@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2015/02/24 18:41:05 UTC

[jira] [Created] (HBASE-13090) Progress heartbeats for long running scanners

Andrew Purtell created HBASE-13090:
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             Summary: 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


It can be necessary to set very long timeouts for clients that issue scans over large regions when all data in the region is filtered out. 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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