[ 
https://issues.apache.org/jira/browse/HIVE-21740?focusedWorklogId=248808&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-248808
 ]

ASF GitHub Bot logged work on HIVE-21740:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 27/May/19 12:46
            Start Date: 27/May/19 12:46
    Worklog Time Spent: 10m 
      Work Description: pvary commented on pull request #633: HIVE-21740: 
Collect LLAP execution latency metrics
URL: https://github.com/apache/hive/pull/633#discussion_r287777380
 
 

 ##########
 File path: 
llap-tez/src/java/org/apache/hadoop/hive/llap/tezplugins/LlapTaskSchedulerService.java
 ##########
 @@ -3154,4 +3165,28 @@ public void taskInfoUpdated(TezTaskAttemptID attemptId, 
boolean isGuaranteed) {
         + attemptId + ", " + newState);
     sendUpdateMessageAsync(ti, newState);
   }
+
+  private void updateMetrics(TaskAttemptImpl taskAttempt) {
+    // Only do it for map tasks
+    if (!isMapTask(taskAttempt)) {
+      return;
+    }
+    // Check if this task was already assigned to a node
+    NodeInfo nodeInfo = knownTasks.get(taskAttempt).assignedNode;
+    if (nodeInfo == null) {
+      return;
+    }
+
+    metrics.addTaskLatency(nodeInfo.shortStringBase, 
taskAttempt.getFinishTime() - taskAttempt.getLaunchTime());
+  }
+
+  private boolean isMapTask(TaskAttemptImpl taskAttempt) {
+    boolean isMapTask = false;
+    for(TezCounter counter : taskAttempt.getCounters().getGroup("HIVE")) {
+      if(counter.getName().startsWith("RECORDS_IN_Map")) {
+        isMapTask = true;
 
 Review comment:
   Optimized the counter based solution as suggested.
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 248808)
    Time Spent: 2h 20m  (was: 2h 10m)

> Collect LLAP execution latency metrics
> --------------------------------------
>
>                 Key: HIVE-21740
>                 URL: https://issues.apache.org/jira/browse/HIVE-21740
>             Project: Hive
>          Issue Type: New Feature
>            Reporter: Peter Vary
>            Assignee: Peter Vary
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HIVE-21740.2.patch, HIVE-21740.patch
>
>          Time Spent: 2h 20m
>  Remaining Estimate: 0h
>
> Collect metrics for LLAP task execution times



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