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Ivan Bella updated ACCUMULO-4643: --------------------------------- Fix Version/s: 1.8.2 > Allow iterators to interrupt themselves > --------------------------------------- > > Key: ACCUMULO-4643 > URL: https://issues.apache.org/jira/browse/ACCUMULO-4643 > Project: Accumulo > Issue Type: Improvement > Components: tserver > Affects Versions: 1.8.1, 2.0.0 > Reporter: Ivan Bella > Assignee: Ivan Bella > Labels: features > Fix For: 1.8.2, 2.0.0 > > Time Spent: 18h 20m > Remaining Estimate: 0h > > The idea here is to allow an iterator stack to send back a special key or > throw a special exception which will allow the tablet server to tear down the > scan to be rebuilt later. This is to handle the case where an iterator is > doing a lot of work without returning results to avoid starving out other > scans. > There are two thoughts on how to do this: > 1) A special "interrupt" key is returned from the getTopKey call that is > detected in the Tablet.nextBatch call, is not added to the results, but is > used to add an unfinished range and results in the remaining ranges to be > deemed unfinished. > 2) An special exception is thrown from the next or seek call that included > the key of the current position, and the same actions are taken as in 1). -- This message was sent by Atlassian JIRA (v6.4.14#64029)