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Amareshwari Sriramadasu commented on MAPREDUCE-1683: ---------------------------------------------------- bq. Looks like JobClient.getClusterStatus(boolean detailed) won't behave as expected, as there is no way to get jobtracker ClusterStatus with jobtracker memory info from the new ClientProtocol due to MAPREDUCE-777. I raised MAPREDUCE-1779 for this. > Remove JNI calls from ClusterStatus cstr > ---------------------------------------- > > Key: MAPREDUCE-1683 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-1683 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: jobtracker > Affects Versions: 0.20.2 > Reporter: Chris Douglas > Assignee: Luke Lu > Attachments: MAPREDUCE-1683_part2_yhadoop_20_10.patch, > MAPREDUCE-1683_yhadoop_20_9.patch, MAPREDUCE-1683_yhadoop_20_S.patch > > > The {{ClusterStatus}} constructor makes two JNI calls to the {{Runtime}} to > fetch memory information. {{ClusterStatus}} instances are often created > inside the {{JobTracker}} to obtain other, unrelated metrics (sometimes from > schedulers' inner loops). Given that this information is related to the > {{JobTracker}} process and not the cluster, the metrics are also available > via {{JvmMetrics}}, and the jsps can gather this information for themselves: > these fields can be removed from {{ClusterStatus}} -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.