[jira] [Commented] (OOZIE-1178) Workflow Application Master in YARN
[ https://issues.apache.org/jira/browse/OOZIE-1178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13562018#comment-13562018 ] Andrew Purtell commented on OOZIE-1178: --- Hi [~acmurthy]. I'd love to but I must decline, unfortunately I will have full time commitments to HBase and HDFS issues at least through 2013. Workflow Application Master in YARN --- Key: OOZIE-1178 URL: https://issues.apache.org/jira/browse/OOZIE-1178 Project: Oozie Issue Type: New Feature Reporter: Bo Wang Attachments: MAPREDUCE-4495-v1.1.patch, MAPREDUCE-4495-v1.patch, MapReduceWorkflowAM.pdf, yapp_proposal.txt It is useful to have a workflow application master, which will be capable of running a DAG of jobs. The workflow client submits a DAG request to the AM and then the AM will manage the life cycle of this application in terms of requesting the needed resources from the RM, and starting, monitoring and retrying the application's individual tasks. Compared to running Oozie with the current MapReduce Application Master, these are some of the advantages: - Less number of consumed resources, since only one application master will be spawned for the whole workflow. - Reuse of resources, since the same resources can be used by multiple consecutive jobs in the workflow (no need to request/wait for resources for every individual job from the central RM). - More optimization opportunities in terms of collective resource requests. - Optimization opportunities in terms of rewriting and composing jobs in the workflow (e.g. pushing down Mappers). - This Application Master can be reused/extended by higher systems like Pig and hive to provide an optimized way of running their workflows. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
[jira] [Commented] (OOZIE-1178) Workflow Application Master in YARN
[ https://issues.apache.org/jira/browse/OOZIE-1178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=13557489#comment-13557489 ] Andrew Purtell commented on OOZIE-1178: --- And interestingly suddenly this is moved from MAPREDUCE to OOZIE. Workflow Application Master in YARN --- Key: OOZIE-1178 URL: https://issues.apache.org/jira/browse/OOZIE-1178 Project: Oozie Issue Type: New Feature Reporter: Bo Wang Attachments: MAPREDUCE-4495-v1.1.patch, MAPREDUCE-4495-v1.patch, MapReduceWorkflowAM.pdf, yapp_proposal.txt It is useful to have a workflow application master, which will be capable of running a DAG of jobs. The workflow client submits a DAG request to the AM and then the AM will manage the life cycle of this application in terms of requesting the needed resources from the RM, and starting, monitoring and retrying the application's individual tasks. Compared to running Oozie with the current MapReduce Application Master, these are some of the advantages: - Less number of consumed resources, since only one application master will be spawned for the whole workflow. - Reuse of resources, since the same resources can be used by multiple consecutive jobs in the workflow (no need to request/wait for resources for every individual job from the central RM). - More optimization opportunities in terms of collective resource requests. - Optimization opportunities in terms of rewriting and composing jobs in the workflow (e.g. pushing down Mappers). - This Application Master can be reused/extended by higher systems like Pig and hive to provide an optimized way of running their workflows. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira
