[jira] [Updated] (ACCUMULO-4643) Allow iterators to interrupt themselves
[ https://issues.apache.org/jira/browse/ACCUMULO-4643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] 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)
[jira] [Updated] (ACCUMULO-4643) Allow iterators to interrupt themselves
[ https://issues.apache.org/jira/browse/ACCUMULO-4643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Christopher Tubbs updated ACCUMULO-4643: Fix Version/s: (was: 1.8.2) I just realized that this couldn't be applied to 1.8 anyway, because it depends on Java 8 for the default method on the SortedKeyValueIterator interface and we agreed that we would not bump up the required Java version without a major version number increment. > 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: 2.0.0 > > Time Spent: 16h 50m > 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 (v6.3.15#6346)
[jira] [Updated] (ACCUMULO-4643) Allow iterators to interrupt themselves
[ https://issues.apache.org/jira/browse/ACCUMULO-4643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] 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: 10.5h > 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 (v6.3.15#6346)
