[ https://issues.apache.org/jira/browse/MAPREDUCE-901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13083846#comment-13083846 ]
Luke Lu commented on MAPREDUCE-901: ----------------------------------- The port, which includes smarter counter limits (exclude framework counters for limits) lgtm. Defer +1 to Jenkins. There are some improvements can be made to improve binary compatibility (for most existing job jars) that we did/does not promise, deferring to a separate JIRA if binary compatibility becomes an issue. > Move Framework Counters into a TaskMetric structure > --------------------------------------------------- > > Key: MAPREDUCE-901 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-901 > Project: Hadoop Map/Reduce > Issue Type: Improvement > Components: task > Affects Versions: 0.21.0 > Reporter: Owen O'Malley > Assignee: Luke Lu > Fix For: 0.23.0 > > Attachments: 901_1.patch, 901_1.patch, FrameworkCounterGroup.java, > MAPREDUCE-901.patch, MAPREDUCE-901.patch, MAPREDUCE-901.patch, > mr-901-trunk-v1.patch > > > I think we should move all of the Counters that the framework updates into a > single class called TaskMetrics. TaskMetrics would have specific fields for > each of the metrics like input records, input bytes, output records, etc. > It would both reduce the serialized size of the heartbeats (by shrinking the > Counters down to just the user's counters) and decrease the latency for > updates to the JobTracker (since Counters are sent at most 1/minute instead > of 1/heartbeat). -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira