[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch patch with log statments changed to debug CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch attaching the same patch to kick jenkins. CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch Update tests for handle SystemMetricsPublisher CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch fix patch CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[
https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Chen He updated YARN-1769:
--
Attachment: YARN-1769.patch
reduce log output when LeafQueue need to unreserve resource frequently.
if (needToUnreserve) {
+ if(LOG.isDebugEnabled()){
LOG.info(we needed to unreserve to be able to allocate);
+ }
return false;
}
CapacityScheduler: Improve reservations
Key: YARN-1769
URL: https://issues.apache.org/jira/browse/YARN-1769
Project: Hadoop YARN
Issue Type: Improvement
Components: capacityscheduler
Affects Versions: 2.3.0
Reporter: Thomas Graves
Assignee: Thomas Graves
Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch,
YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch,
YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch,
YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch
Currently the CapacityScheduler uses reservations in order to handle requests
for large containers and the fact there might not currently be enough space
available on a single host.
The current algorithm for reservations is to reserve as many containers as
currently required and then it will start to reserve more above that after a
certain number of re-reservations (currently biased against larger
containers). Anytime it hits the limit of number reserved it stops looking
at any other nodes. This results in potentially missing nodes that have
enough space to fullfill the request.
The other place for improvement is currently reservations count against your
queue capacity. If you have reservations you could hit the various limits
which would then stop you from looking further at that node.
The above 2 cases can cause an application requesting a larger container to
take a long time to gets it resources.
We could improve upon both of those by simply continuing to look at incoming
nodes to see if we could potentially swap out a reservation for an actual
allocation.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Chen He updated YARN-1769: -- Attachment: (was: YARN-1769.patch) CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Chen He updated YARN-1769: -- Attachment: YARN-1769.patch CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch fixed merged conflict. CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Karthik Kambatla updated YARN-1769: --- Target Version/s: 2.6.0 (was: 3.0.0, 2.4.0, 2.5.0) CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch fix patch . I generated it from the wrong directory. CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch patch to fix TestReservations after YARN-1474 CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch upmerged to latest CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch fix typo in findbugs excludes file. Note that test failures are not related to this change. CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch exclude findbugs warnings. CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch upmerge patch to latest. CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch, YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch update if check in assignContainer CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch, YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
[jira] [Updated] (YARN-1769) CapacityScheduler: Improve reservations
[ https://issues.apache.org/jira/browse/YARN-1769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Thomas Graves updated YARN-1769: Attachment: YARN-1769.patch In this patch I tried to minimize the code changes. I choose to keep the accounting/book keeping of reservations the same to hopefully minimize the impact of this and keep it small. I made this change configurable (which is refreshable via yarn rmadmin -refreshQueues). At a high level what it does is: - for the limit checks, it does the normal checks but then if it has hit a limit and this is configured on, it does the check again subtracting out the amount reserved. If that is under the limit it allows it to go on to see if it could unreserve a spot and use the current node. - for the number of reservation limit, we simply delay that check and if we could allocate on the current node by unreserving then we do. CapacityScheduler: Improve reservations Key: YARN-1769 URL: https://issues.apache.org/jira/browse/YARN-1769 Project: Hadoop YARN Issue Type: Improvement Components: capacityscheduler Affects Versions: 2.3.0 Reporter: Thomas Graves Assignee: Thomas Graves Attachments: YARN-1769.patch Currently the CapacityScheduler uses reservations in order to handle requests for large containers and the fact there might not currently be enough space available on a single host. The current algorithm for reservations is to reserve as many containers as currently required and then it will start to reserve more above that after a certain number of re-reservations (currently biased against larger containers). Anytime it hits the limit of number reserved it stops looking at any other nodes. This results in potentially missing nodes that have enough space to fullfill the request. The other place for improvement is currently reservations count against your queue capacity. If you have reservations you could hit the various limits which would then stop you from looking further at that node. The above 2 cases can cause an application requesting a larger container to take a long time to gets it resources. We could improve upon both of those by simply continuing to look at incoming nodes to see if we could potentially swap out a reservation for an actual allocation. -- This message was sent by Atlassian JIRA (v6.2#6252)
