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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Work logged] (HIVE-21911) Pluggable LlapMetricsListener on Tez side to disable / resize Daemons
Date Mon, 01 Jul 2019 08:41:00 GMT


ASF GitHub Bot logged work on HIVE-21911:

                Author: ASF GitHub Bot
            Created on: 01/Jul/19 08:40
            Start Date: 01/Jul/19 08:40
    Worklog Time Spent: 10m 
      Work Description: pvary commented on pull request #691: HIVE-21911: Pluggable LlapMetricsListener
on Tez side to disable / resize Daemons

 File path: llap-tez/src/java/org/apache/hadoop/hive/llap/tezplugins/metrics/
 @@ -101,13 +122,27 @@ void collectMetrics() {
         LlapDaemonProtocolProtos.GetDaemonMetricsResponseProto metrics =
-        instanceStatisticsMap.put(identity, new LlapMetrics(metrics));
+        LlapMetrics newMetrics = new LlapMetrics(metrics);
 Review comment:
   Yes, I see several use-cases where we need statistics without the listener. For example:
it might be good idea that when we chose a random node for task execution we could distribute
these tasks based on the available executors
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Issue Time Tracking

    Worklog Id:     (was: 270037)
    Time Spent: 1h 10m  (was: 1h)

> Pluggable LlapMetricsListener on Tez side to disable / resize Daemons
> ---------------------------------------------------------------------
>                 Key: HIVE-21911
>                 URL:
>             Project: Hive
>          Issue Type: Sub-task
>          Components: llap, Tez
>            Reporter: Peter Vary
>            Assignee: Peter Vary
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HIVE-21911.patch
>          Time Spent: 1h 10m
>  Remaining Estimate: 0h
> We need to have a way to plug in different listeners which act upon the LlapDaemon statistics.
> This listener should be able to disable / resize the LlapDaemons based on health data.

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