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[YARN-3564] Fix TestContainerAllocation.testAMContainerAllocationWhenDNSUnavailable fails randomly - YARN - [issue]
...the test fails intermittently in jenkins https://builds.apache.org/job/PreCommit-YARN-Build/7467/testReport/...
http://issues.apache.org/jira/browse/YARN-3564    Author: Jian He, 2015-05-01, 16:40
[MAPREDUCE-5476] Job can fail when RM restarts after staging dir is cleaned but before MR successfully unregister with RM - MapReduce - [issue]
http://issues.apache.org/jira/browse/MAPREDUCE-5476    Author: Jian He, 2015-05-01, 13:48
[YARN-3472] Possible leak in DelegationTokenRenewer#allTokens - YARN - [issue]
...When old token is expiring and being removed, it's not removed from the allTokens map, resulting in possible leak. if (t.token.getKind().equals(new Text("HDFS_DELEGATION_TOKEN"))) { &nb...
http://issues.apache.org/jira/browse/YARN-3472    Author: Jian He, 2015-04-25, 16:34
[YARN-3230] Clarify application states on the web UI - YARN - [issue]
...Today, application state are simply surfaced as a single word on the web UI. Not everyone understands the meaning of "NEW_SAVING, SUBMITTED, ACCEPTED". This jira is to clarify the meaning of...
http://issues.apache.org/jira/browse/YARN-3230    Author: Jian He, 2015-04-25, 00:17
[YARN-3273] Improve web UI to facilitate scheduling analysis and debugging - YARN - [issue]
...Job may be stuck for reasons such as: hitting queue capacity hitting user-limit, hitting AM-resource-percentageThe  first queueCapacity is already shown on the UI.We may surface things ...
http://issues.apache.org/jira/browse/YARN-3273    Author: Jian He, 2015-04-25, 00:17
[YARN-3494] Expose AM resource limit and usage in QueueMetrics - YARN - [issue]
...Now we have the AM resource limit and user limit shown on the web UI, it would be useful to expose them in the QueueMetrics as well....
http://issues.apache.org/jira/browse/YARN-3494    Author: Jian He, 2015-04-22, 14:41
[YARN-3486] Duplicate check for partitioned request on partitioned node - YARN - [issue]
...For each partitioned request on partitioned node, we are checking it twice. one on exclusive_scheduling, the other on non_exclusive_scheduling; Probably we need a higher level mapping for re...
http://issues.apache.org/jira/browse/YARN-3486    Author: Jian He, 2015-04-14, 21:41
[MAPREDUCE-5568] JHS returns invalid string for reducer completion percentage if AM restarts with 0 reducer. - MapReduce - [issue]
...JobCLient shows like:13/10/05 16:26:09 INFO mapreduce.Job:  map 100% reduce NaN%13/10/05 16:26:09 INFO mapreduce.Job: Job job_1381015536254_0001 completed successfully13/10/05 16:26:09 ...
http://issues.apache.org/jira/browse/MAPREDUCE-5568    Author: Jian He, 2015-04-10, 21:19
[YARN-3145] ConcurrentModificationException on CapacityScheduler ParentQueue#getQueueUserAclInfo - YARN - [issue]
...ava.util.ConcurrentModificationException(java.util.ConcurrentModificationExceptionat java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1115)at java.util.TreeMap$KeyIterator.next(...
http://issues.apache.org/jira/browse/YARN-3145    Author: Jian He, 2015-04-10, 21:10
[HADOOP-9907] Webapp http://hostname:port/metrics  link is not working - Hadoop - [issue]
...This link is not working which just shows a blank page....
http://issues.apache.org/jira/browse/HADOOP-9907    Author: Jian He, 2015-04-10, 21:04
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB