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YARN-2274. FairScheduler: Add debug information about cluster capacity, availability and reservations. (kasha) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1610542 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Karthik Kambatla 2014-07-14 21:37:36 +00:00
parent 168c721435
commit c9c1ee9a9c
2 changed files with 20 additions and 3 deletions
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3
hadoop-yarn-project/CHANGES.txt
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@ -22,6 +22,9 @@ Release 2.6.0 - UNRELEASED
YARN-2242. Improve exception information on AM launch crashes. (Li Lu
via junping_du)
YARN-2274. FairScheduler: Add debug information about cluster capacity,
availability and reservations. (kasha)
OPTIMIZATIONS
BUG FIXES

20
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FairScheduler.java
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@ -136,6 +136,8 @@ public class FairScheduler extends
// How often fair shares are re-calculated (ms)
protected long UPDATE_INTERVAL = 500;
private final int UPDATE_DEBUG_FREQUENCY = 5;
private int updatesToSkipForDebug = UPDATE_DEBUG_FREQUENCY;
private Thread updateThread;
private Thread schedulingThread;
@ -275,6 +277,18 @@ public class FairScheduler extends
// Recursively compute fair shares for all queues
// and update metrics
rootQueue.recomputeShares();
if (LOG.isDebugEnabled()) {
if (--updatesToSkipForDebug < 0) {
updatesToSkipForDebug = UPDATE_DEBUG_FREQUENCY;
LOG.debug("Cluster Capacity: " + clusterResource +
" Allocations: " + rootMetrics.getAllocatedResources() +
" Availability: " + Resource.newInstance(
rootMetrics.getAvailableMB(),
rootMetrics.getAvailableVirtualCores()) +
" Demand: " + rootQueue.getDemand());
}
}
}
/**
@ -879,14 +893,14 @@ public class FairScheduler extends
// Update application requests
application.updateResourceRequests(ask);
LOG.debug("allocate: post-update");
application.showRequests();
}
if (LOG.isDebugEnabled()) {
LOG.debug("allocate:" +
LOG.debug("allocate: post-update" +
" applicationAttemptId=" + appAttemptId +
" #ask=" + ask.size());
" #ask=" + ask.size() +
" reservation= " + application.getCurrentReservation());
LOG.debug("Preempting " + application.getPreemptionContainers().size()
+ " container(s)");