[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Karthik Kambatla updated YARN-3405: --- Issue Type: Bug (was: Sub-task) Parent: (was: YARN-4752) > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Assignee: Peng Zhang >Priority: Critical > Labels: fs-preemption-bugs > Attachments: YARN-3405.01.patch, YARN-3405.02.patch > > > Queue hierarchy described as below: > {noformat} > root >/ \ >queue-1 queue-2 > / \ > queue-1-1 queue-1-2 > {noformat} > Assume cluster resource is 100 > # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. > # When queue-1-2 is active, and it cause some new preemption request for > fairshare 25. > # When preemption from root, it has possibility to find preemption candidate > is queue-2. If so preemptContainerPreCheck for queue-2 return false because > it's equal to its fairshare. > # Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. > What I expect here is that queue-1-2 preempt from queue-1-1. -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Karthik Kambatla updated YARN-3405: --- Issue Type: Sub-task (was: Bug) Parent: YARN-4752 > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Sub-task > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Assignee: Peng Zhang >Priority: Critical > Labels: BB2015-05-TBR > Attachments: YARN-3405.01.patch, YARN-3405.02.patch > > > Queue hierarchy described as below: > {noformat} > root >/ \ >queue-1 queue-2 > / \ > queue-1-1 queue-1-2 > {noformat} > Assume cluster resource is 100 > # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. > # When queue-1-2 is active, and it cause some new preemption request for > fairshare 25. > # When preemption from root, it has possibility to find preemption candidate > is queue-2. If so preemptContainerPreCheck for queue-2 return false because > it's equal to its fairshare. > # Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. > What I expect here is that queue-1-2 preempt from queue-1-1. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Allen Wittenauer updated YARN-3405: --- Labels: BB2015-05-TBR (was: ) > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Assignee: Peng Zhang >Priority: Critical > Labels: BB2015-05-TBR > Attachments: YARN-3405.01.patch, YARN-3405.02.patch > > > Queue hierarchy described as below: > {noformat} > root >/ \ >queue-1 queue-2 > / \ > queue-1-1 queue-1-2 > {noformat} > Assume cluster resource is 100 > # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. > # When queue-1-2 is active, and it cause some new preemption request for > fairshare 25. > # When preemption from root, it has possibility to find preemption candidate > is queue-2. If so preemptContainerPreCheck for queue-2 return false because > it's equal to its fairshare. > # Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. > What I expect here is that queue-1-2 preempt from queue-1-1. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Peng Zhang updated YARN-3405: - Attachment: YARN-3405.02.patch > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Assignee: Peng Zhang >Priority: Critical > Attachments: YARN-3405.01.patch, YARN-3405.02.patch > > > Queue hierarchy described as below: > {noformat} > root >/ \ >queue-1 queue-2 > / \ > queue-1-1 queue-1-2 > {noformat} > Assume cluster resource is 100 > # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. > # When queue-1-2 is active, and it cause some new preemption request for > fairshare 25. > # When preemption from root, it has possibility to find preemption candidate > is queue-2. If so preemptContainerPreCheck for queue-2 return false because > it's equal to its fairshare. > # Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. > What I expect here is that queue-1-2 preempt from queue-1-1. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Peng Zhang updated YARN-3405: - Attachment: (was: YARN-3405.02.patch) > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Assignee: Peng Zhang >Priority: Critical > Attachments: YARN-3405.01.patch, YARN-3405.02.patch > > > Queue hierarchy described as below: > {noformat} > root >/ \ >queue-1 queue-2 > / \ > queue-1-1 queue-1-2 > {noformat} > Assume cluster resource is 100 > # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. > # When queue-1-2 is active, and it cause some new preemption request for > fairshare 25. > # When preemption from root, it has possibility to find preemption candidate > is queue-2. If so preemptContainerPreCheck for queue-2 return false because > it's equal to its fairshare. > # Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. > What I expect here is that queue-1-2 preempt from queue-1-1. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Peng Zhang updated YARN-3405: - Attachment: YARN-3405.02.patch > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Assignee: Peng Zhang >Priority: Critical > Attachments: YARN-3405.01.patch, YARN-3405.02.patch > > > Queue hierarchy described as below: > {noformat} > root >/ \ >queue-1 queue-2 > / \ > queue-1-1 queue-1-2 > {noformat} > Assume cluster resource is 100 > # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. > # When queue-1-2 is active, and it cause some new preemption request for > fairshare 25. > # When preemption from root, it has possibility to find preemption candidate > is queue-2. If so preemptContainerPreCheck for queue-2 return false because > it's equal to its fairshare. > # Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. > What I expect here is that queue-1-2 preempt from queue-1-1. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Peng Zhang updated YARN-3405: - Attachment: YARN-3405.01.patch > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Assignee: Peng Zhang >Priority: Critical > Attachments: YARN-3405.01.patch > > > Queue hierarchy described as below: > {noformat} > root >/ \ >queue-1 queue-2 > / \ > queue-1-1 queue-1-2 > {noformat} > Assume cluster resource is 100 > # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. > # When queue-1-2 is active, and it cause some new preemption request for > fairshare 25. > # When preemption from root, it has possibility to find preemption candidate > is queue-2. If so preemptContainerPreCheck for queue-2 return false because > it's equal to its fairshare. > # Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. > What I expect here is that queue-1-2 preempt from queue-1-1. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Peng Zhang updated YARN-3405: - Description: Queue hierarchy described as below: {noformat} root / \ queue-1 queue-2 / \ queue-1-1 queue-1-2 {noformat} Assume cluster resource is 100 # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. # When queue-1-2 is active, and it cause some new preemption request for fairshare 25. # When preemption from root, it has possibility to find preemption candidate is queue-2. If so preemptContainerPreCheck for queue-2 return false because it's equal to its fairshare. # Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. What I expect here is that queue-1-2 preempt from queue-1-1. was: Queue hierarchy described as below: {noformat} root / \ queue-1queue-2 / \ queue-1-1queue-1-2 {noformat} Assume cluster resource is 100 # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. # When queue-1-2 is active, and it cause some new preemption request for fairshare 25. # When preemption from root, it has possibility to find preemption candidate is queue-2. If so preemptContainerPreCheck for queue-2 return false because it's equal to its fairshare. # Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. What I expect here is that queue-1-2 preempt from queue-1-1. > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Priority: Critical > > Queue hierarchy described as below: > {noformat} > root >/ \ >queue-1 queue-2 > / \ > queue-1-1 queue-1-2 > {noformat} > Assume cluster resource is 100 > # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. > # When queue-1-2 is active, and it cause some new preemption request for > fairshare 25. > # When preemption from root, it has possibility to find preemption candidate > is queue-2. If so preemptContainerPreCheck for queue-2 return false because > it's equal to its fairshare. > # Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. > What I expect here is that queue-1-2 preempt from queue-1-1. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Peng Zhang updated YARN-3405: - Description: Queue hierarchy described as below: {noformat} root / \ queue-1queue-2 / \ queue-1-1queue-1-2 {noformat} Assume cluster resource is 100 # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. # When queue-1-2 is active, and it cause some new preemption request for fairshare 25. # When preemption from root, it has possibility to find preemption candidate is queue-2. If so preemptContainerPreCheck for queue-2 return false because it's equal to its fairshare. # Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. What I expect here is that queue-1-2 preempt from queue-1-1. was: Queue hierarchy described as below: {noformat} root / \ queue-1queue-2 / \ queue-1-1queue-1-2 {noformat} Assume cluster resource is 100 # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. # When queue-1-2 is active, and it cause some new preemption request for fairshare 25. # When preemption from root, it has possibility to find preemption candidate is queue-2. If so #. Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Priority: Critical > > Queue hierarchy described as below: > {noformat} > root >/ \ >queue-1queue-2 > / \ > queue-1-1queue-1-2 > {noformat} > Assume cluster resource is 100 > # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. > # When queue-1-2 is active, and it cause some new preemption request for > fairshare 25. > # When preemption from root, it has possibility to find preemption candidate > is queue-2. If so preemptContainerPreCheck for queue-2 return false because > it's equal to its fairshare. > # Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. > What I expect here is that queue-1-2 preempt from queue-1-1. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Peng Zhang updated YARN-3405: - Description: Queue hierarchy described as below: {noformat} root / \ queue-1queue-2 / \ queue-1-1queue-1-2 {noformat} Assume cluster resource is 100 # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. # When queue-1-2 is active, and it cause some new preemption request for fairshare 25. # When preemption from root, it has possibility to find preemption candidate is queue-2. If so #. Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. was: Queue hierarchy described as below: {noformat} root / \ queue-1queue-2 / \ queue-1-1queue-1-2 {noformat} 1. When queue-1-1 is active and it has been assigned with all resources. 2. When queue-1-2 is active, and it cause some new preemption request. 3. But when do preemption, it now starts from root, and found queue-1 is not over fairshare, so no recursion preemption to queue-1-1. 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Priority: Critical > > Queue hierarchy described as below: > {noformat} > root >/ \ >queue-1queue-2 > / \ > queue-1-1queue-1-2 > {noformat} > Assume cluster resource is 100 > # queue-1-1 and queue-2 has app. Each get 50 usage and 50 fairshare. > # When queue-1-2 is active, and it cause some new preemption request for > fairshare 25. > # When preemption from root, it has possibility to find preemption candidate > is queue-2. If so > #. Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Peng Zhang updated YARN-3405: - Description: Queue hierarchy described as below: {noformat} root / \ queue-1queue-2 / \ queue-1-1queue-1-2 {noformat} 1. When queue-1-1 is active and it has been assigned with all resources. 2. When queue-1-2 is active, and it cause some new preemption request. 3. But when do preemption, it now starts from root, and found queue-1 is not over fairshare, so no recursion preemption to queue-1-1. 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. was: Queue hierarchy described as below: {noformat} root / \ queue-1queue-2 / \ queue-1-1queue-1-2 {noformat} 1. When queue-1-1 is active and it has been assigned with all resources. 2. When queue-1-2 is active, and it cause some new preemption request. 3. But when do preemption, it now starts from root, and found queue-1 is not over fairshare, so no recursion preemption to queue-1-1. 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Priority: Critical > > Queue hierarchy described as below: > {noformat} > root > / \ >queue-1queue-2 > / \ > queue-1-1queue-1-2 > {noformat} > 1. When queue-1-1 is active and it has been assigned with all resources. > 2. When queue-1-2 is active, and it cause some new preemption request. > 3. But when do preemption, it now starts from root, and found queue-1 is not > over fairshare, so no recursion preemption to queue-1-1. > 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Peng Zhang updated YARN-3405: - Description: Queue hierarchy described as below: {noformat} root / \ queue-1queue-2 / \ queue-1-1queue-1-2 {noformat} 1. When queue-1-1 is active and it has been assigned with all resources. 2. When queue-1-2 is active, and it cause some new preemption request. 3. But when do preemption, it now starts from root, and found queue-1 is not over fairshare, so no recursion preemption to queue-1-1. 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. was: Queue hierarchy described as below: {noformat} root | \ queue-1queue-2 / \ queue-1-1queue-1-2 {noformat} 1. When queue-1-1 is active and it has been assigned with all resources. 2. When queue-1-2 is active, and it cause some new preemption request. 3. But when do preemption, it now starts from root, and found queue-1 is not over fairshare, so no recursion preemption to queue-1-1. 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Priority: Critical > > Queue hierarchy described as below: > {noformat} > root > / \ >queue-1queue-2 > / \ > queue-1-1queue-1-2 > {noformat} > 1. When queue-1-1 is active and it has been assigned with all resources. > 2. When queue-1-2 is active, and it cause some new preemption request. > 3. But when do preemption, it now starts from root, and found queue-1 is not > over fairshare, so no recursion preemption to queue-1-1. > 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Peng Zhang updated YARN-3405: - Description: Queue hierarchy described as below: {noformat} root | \ queue-1queue-2 / \ queue-1-1queue-1-2 {noformat} 1. When queue-1-1 is active and it has been assigned with all resources. 2. When queue-1-2 is active, and it cause some new preemption request. 3. But when do preemption, it now starts from root, and found queue-1 is not over fairshare, so no recursion preemption to queue-1-1. 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. was: Queue hierarchy described as below: {noformat} root | queue-1 / \ queue-1-1queue-1-2 {noformat} 1. When queue-1-1 is active and it has been assigned with all resources. 2. When queue-1-2 is active, and it cause some new preemption request. 3. But when do preemption, it now starts from root, and found queue-1 is not over fairshare, so no recursion preemption to queue-1-1. 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Priority: Critical > > Queue hierarchy described as below: > {noformat} > root > | \ >queue-1queue-2 > / \ > queue-1-1queue-1-2 > {noformat} > 1. When queue-1-1 is active and it has been assigned with all resources. > 2. When queue-1-2 is active, and it cause some new preemption request. > 3. But when do preemption, it now starts from root, and found queue-1 is not > over fairshare, so no recursion preemption to queue-1-1. > 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (YARN-3405) FairScheduler's preemption cannot happen between sibling in some case
[ https://issues.apache.org/jira/browse/YARN-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Peng Zhang updated YARN-3405: - Description: Queue hierarchy described as below: {noformat} root | queue-1 / \ queue-1-1queue-1-2 {noformat} 1. When queue-1-1 is active and it has been assigned with all resources. 2. When queue-1-2 is active, and it cause some new preemption request. 3. But when do preemption, it now starts from root, and found queue-1 is not over fairshare, so no recursion preemption to queue-1-1. 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. was: Queue hierarchy described as below: {noformat} root / queue-1 / \ queue-1-1queue-1-2 {noformat} 1. When queue-1-1 is active and it has been assigned with all resources. 2. When queue-1-2 is active, and it cause some new preemption request. 3. But when do preemption, it now starts from root, and found queue-1 is not over fairshare, so no recursion preemption to queue-1-1. 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 itself. > FairScheduler's preemption cannot happen between sibling in some case > - > > Key: YARN-3405 > URL: https://issues.apache.org/jira/browse/YARN-3405 > Project: Hadoop YARN > Issue Type: Bug > Components: fairscheduler >Affects Versions: 2.7.0 >Reporter: Peng Zhang >Priority: Critical > > Queue hierarchy described as below: > {noformat} > root > | >queue-1 > / \ > queue-1-1queue-1-2 > {noformat} > 1. When queue-1-1 is active and it has been assigned with all resources. > 2. When queue-1-2 is active, and it cause some new preemption request. > 3. But when do preemption, it now starts from root, and found queue-1 is not > over fairshare, so no recursion preemption to queue-1-1. > 4. Finally queue-1-2 will be waiting for resource release form queue-1-1 > itself. -- This message was sent by Atlassian JIRA (v6.3.4#6332)