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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-5481) Allow Drill to persist profiles in-memory only with a max capacity
Date Wed, 10 May 2017 04:19:04 GMT

    [ https://issues.apache.org/jira/browse/DRILL-5481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16004024#comment-16004024
] 

ASF GitHub Bot commented on DRILL-5481:
---------------------------------------

Github user ppadma commented on a diff in the pull request:

    https://github.com/apache/drill/pull/827#discussion_r115635985
  
    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/store/InMemoryPersistentStore.java
---
    @@ -93,6 +106,14 @@ public void put(final String key, final V value, final DataChangeVersion
dataCha
             throw new VersionMismatchException("Version mismatch detected", dataChangeVersion.getVersion());
           }
           store.put(key, value);
    +      currentSize.incrementAndGet();
    +
    +      if (currentSize.get() > maxCapacity) {
    --- End diff --
    
    I guess you can combine and make it if (currentSize.incrementAndGet() > maxCapacity)


> Allow Drill to persist profiles in-memory only with a max capacity
> ------------------------------------------------------------------
>
>                 Key: DRILL-5481
>                 URL: https://issues.apache.org/jira/browse/DRILL-5481
>             Project: Apache Drill
>          Issue Type: Improvement
>    Affects Versions: 1.10.0
>            Reporter: Kunal Khatua
>            Assignee: Kunal Khatua
>
> To allow for fast persistence of profiles on a temporary basis (i.e. till the life of
the Drillbit), an existing test class {{org.apache.drill.exec.testing.store.NoWriteLocalStore.java}}
was refactored to {{org.apache.drill.exec.store.sys.store.EphemeralPersistentStore}} and given
the ability to maintain a max capacity.
> This should allow query profiles to be available for as long as the Drillbit process'
lifespan.



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