[jira] [Created] (ACCUMULO-3795) flush the scan buffer if non-empty after configured timeout

["Ivan Bella (JIRA)" <ji...@apache.org>]

Ivan Bella created ACCUMULO-3795:
------------------------------------

             Summary: flush the scan buffer if non-empty after configured timeout
                 Key: ACCUMULO-3795
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3795
             Project: Accumulo
          Issue Type: New Feature
          Components: tserver
    Affects Versions: 1.6.2
            Reporter: Ivan Bella


For scans that may take a long time because of some underlying iterator that has to scan many keys and only returns one every so often, it would be great if we could force results to be returned to the user before the buffer has been completely filled (table.scan.max.memory).  I propose that this be time based.  Perhaps we would add a configuration property called something like table.scan.flush.ms.  Note that the buffer would only be flushed (i.e. returned to the client) iff it is non-empty, and the table.scan.flush.ms threshold has been reached since the beginning of the nextBatch call in Tablet.java.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)