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From "ASF GitHub Bot (Jira)" <>
Subject [jira] [Work logged] (HIVE-22821) Add necessary endpoints for proactive cache eviction
Date Mon, 09 Mar 2020 22:26:00 GMT


ASF GitHub Bot logged work on HIVE-22821:

                Author: ASF GitHub Bot
            Created on: 09/Mar/20 22:25
            Start Date: 09/Mar/20 22:25
    Worklog Time Spent: 10m 
      Work Description: szlta commented on pull request #909: HIVE-22821

 File path: llap-server/src/java/org/apache/hadoop/hive/llap/io/api/impl/
 @@ -221,6 +227,9 @@ public void debugDumpShort(StringBuilder sb) {
         metadataCache, dataCache, bufferManagerOrc, conf, cacheMetrics, ioMetrics, tracePool);
     this.genericCvp = isEncodeEnabled ? new GenericColumnVectorProducer(
         serdeCache, bufferManagerGeneric, conf, cacheMetrics, ioMetrics, tracePool) : null;
+    proactiveEvictionExecutor = Executors.newSingleThreadExecutor(
 Review comment:
   "better to deal with it within HS2 by making this fire and forget kind of request"
   This is exactly my intention and how the code is right now, as you can see this if you
read back and take a look on the code.
   "fraction of second"
   For one daemon, yes - what if we have many? And how will the remote invocations' overhead
add up to this?
   "why it is done on the llap side"
   I already stated 2 times that I'm fine and agree with you on not doing anything additional
async stuff on LLAP daemon side, btw did you not see this commit in this PR?
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Issue Time Tracking

    Worklog Id:     (was: 400406)
    Time Spent: 3h 20m  (was: 3h 10m)

> Add necessary endpoints for proactive cache eviction
> ----------------------------------------------------
>                 Key: HIVE-22821
>                 URL:
>             Project: Hive
>          Issue Type: Sub-task
>          Components: llap
>            Reporter: Ádám Szita
>            Assignee: Ádám Szita
>            Priority: Major
>              Labels: pull-request-available
>         Attachments: HIVE-22821.0.patch, HIVE-22821.1.patch, HIVE-22821.2.patch
>          Time Spent: 3h 20m
>  Remaining Estimate: 0h
> Implement the parts required for iHS2 -> LLAP daemons communication:
>  * protobuf message schema and endpoints
>  * Hive configuration
>  * for use cases:
>  ** dropping db
>  ** dropping table
>  ** dropping partition from a table

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