[jira] [Commented] (YARN-5565) Capacity Scheduler not assigning value correctly.
[ https://issues.apache.org/jira/browse/YARN-5565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16546333#comment-16546333 ] gurmukh singh commented on YARN-5565: - Thanks Zian, for looking into this > Capacity Scheduler not assigning value correctly. > - > > Key: YARN-5565 > URL: https://issues.apache.org/jira/browse/YARN-5565 > Project: Hadoop YARN > Issue Type: Bug > Components: capacity scheduler, yarn >Affects Versions: 2.7.2 > Environment: hadoop 2.7.2 >Reporter: gurmukh singh >Assignee: Zian Chen >Priority: Major > Labels: capacity-scheduler, scheduler, yarn > > Hi > I was testing and found out that value assigned in the scheduler > configuration is not consistent with what ResourceManager is assigning. > If i set the configuration as below and understand that it is java float, but > the rounding is not correct. > capacity-sheduler.xml > > yarn.scheduler.capacity.q1.capacity > 7.142857142857143 > > In Java: System.err.println((7.142857142857143f)) ===> 7.142587 > But, instead Resource Manager is assigning is 7.1428566 > Tested this on hadoop 2.7.2 -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org
[jira] [Commented] (YARN-5565) Capacity Scheduler not assigning value correctly.
[ https://issues.apache.org/jira/browse/YARN-5565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16546041#comment-16546041 ] Zian Chen commented on YARN-5565: - close this as won't fix as explained above. > Capacity Scheduler not assigning value correctly. > - > > Key: YARN-5565 > URL: https://issues.apache.org/jira/browse/YARN-5565 > Project: Hadoop YARN > Issue Type: Bug > Components: capacity scheduler, yarn >Affects Versions: 2.7.2 > Environment: hadoop 2.7.2 >Reporter: gurmukh singh >Assignee: Zian Chen >Priority: Major > Labels: capacity-scheduler, scheduler, yarn > > Hi > I was testing and found out that value assigned in the scheduler > configuration is not consistent with what ResourceManager is assigning. > If i set the configuration as below and understand that it is java float, but > the rounding is not correct. > capacity-sheduler.xml > > yarn.scheduler.capacity.q1.capacity > 7.142857142857143 > > In Java: System.err.println((7.142857142857143f)) ===> 7.142587 > But, instead Resource Manager is assigning is 7.1428566 > Tested this on hadoop 2.7.2 -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org
[jira] [Commented] (YARN-5565) Capacity Scheduler not assigning value correctly.
[ https://issues.apache.org/jira/browse/YARN-5565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16542250#comment-16542250 ] Zian Chen commented on YARN-5565: - Hi [~gurmukhd] , any comments on this? Can we close this issue as won't fix? > Capacity Scheduler not assigning value correctly. > - > > Key: YARN-5565 > URL: https://issues.apache.org/jira/browse/YARN-5565 > Project: Hadoop YARN > Issue Type: Bug > Components: capacity scheduler, yarn >Affects Versions: 2.7.2 > Environment: hadoop 2.7.2 >Reporter: gurmukh singh >Assignee: Zian Chen >Priority: Major > Labels: capacity-scheduler, scheduler, yarn > > Hi > I was testing and found out that value assigned in the scheduler > configuration is not consistent with what ResourceManager is assigning. > If i set the configuration as below and understand that it is java float, but > the rounding is not correct. > capacity-sheduler.xml > > yarn.scheduler.capacity.q1.capacity > 7.142857142857143 > > In Java: System.err.println((7.142857142857143f)) ===> 7.142587 > But, instead Resource Manager is assigning is 7.1428566 > Tested this on hadoop 2.7.2 -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org
[jira] [Commented] (YARN-5565) Capacity Scheduler not assigning value correctly.
[ https://issues.apache.org/jira/browse/YARN-5565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16535622#comment-16535622 ] Zian Chen commented on YARN-5565: - Hi [~gurmukhd] , After investigating this issue, I think is related to JAVA float precision. JAVA float has 32 bits (4 bytes) where 23 bits are used for the mantissa (about 7 decimal *digits*). which will result in some unexpected precision loss here. Also, capacity value is a percentage based value, so it will be converted and cap into 0.0714286f. I tested in local, System.out.println(0.07142857142857143f) will be 0.071428575. So to be safe, we suggest not setting capacity with precision which extends JAVA float precision. > Capacity Scheduler not assigning value correctly. > - > > Key: YARN-5565 > URL: https://issues.apache.org/jira/browse/YARN-5565 > Project: Hadoop YARN > Issue Type: Bug > Components: capacity scheduler, yarn >Affects Versions: 2.7.2 > Environment: hadoop 2.7.2 >Reporter: gurmukh singh >Priority: Major > Labels: capacity-scheduler, scheduler, yarn > > Hi > I was testing and found out that value assigned in the scheduler > configuration is not consistent with what ResourceManager is assigning. > If i set the configuration as below and understand that it is java float, but > the rounding is not correct. > capacity-sheduler.xml > > yarn.scheduler.capacity.q1.capacity > 7.142857142857143 > > In Java: System.err.println((7.142857142857143f)) ===> 7.142587 > But, instead Resource Manager is assigning is 7.1428566 > Tested this on hadoop 2.7.2 -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org
[jira] [Commented] (YARN-5565) Capacity Scheduler not assigning value correctly.
[ https://issues.apache.org/jira/browse/YARN-5565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16509115#comment-16509115 ] gurmukh singh commented on YARN-5565: - This behavior is still true for 2.7.6. > Capacity Scheduler not assigning value correctly. > - > > Key: YARN-5565 > URL: https://issues.apache.org/jira/browse/YARN-5565 > Project: Hadoop YARN > Issue Type: Bug > Components: capacity scheduler, yarn >Affects Versions: 2.7.2 > Environment: hadoop 2.7.2 >Reporter: gurmukh singh >Priority: Major > Labels: capacity-scheduler, scheduler, yarn > > Hi > I was testing and found out that value assigned in the scheduler > configuration is not consistent with what ResourceManager is assigning. > If i set the configuration as below and understand that it is java float, but > the rounding is not correct. > capacity-sheduler.xml > > yarn.scheduler.capacity.q1.capacity > 7.142857142857143 > > In Java: System.err.println((7.142857142857143f)) ===> 7.142587 > But, instead Resource Manager is assigning is 7.1428566 > Tested this on hadoop 2.7.2 -- This message was sent by Atlassian JIRA (v7.6.3#76005) - To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org
