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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4805) Allow better control of resource consumption in HTable
Date Fri, 18 Nov 2011 05:31:52 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13152661#comment-13152661
] 

Hudson commented on HBASE-4805:
-------------------------------

Integrated in HBase-0.92 #142 (See [https://builds.apache.org/job/HBase-0.92/142/])
    HBASE-4805  Allow better control of resource consumption in HTable (Lars H)

larsh : 
Files : 
* /hbase/branches/0.92/CHANGES.txt
* /hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/client/HConnection.java
* /hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java
* /hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/client/HTable.java
* /hbase/branches/0.92/src/test/java/org/apache/hadoop/hbase/client/HConnectionTestingUtility.java
* /hbase/branches/0.92/src/test/java/org/apache/hadoop/hbase/client/TestHCM.java

                
> Allow better control of resource consumption in HTable
> ------------------------------------------------------
>
>                 Key: HBASE-4805
>                 URL: https://issues.apache.org/jira/browse/HBASE-4805
>             Project: HBase
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 0.92.0, 0.94.0
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>             Fix For: 0.92.0, 0.94.0
>
>         Attachments: 4805-v2.txt, 4805-v3.txt, 4805-v4.txt, 4805-v5.txt, 4805.txt
>
>
> From some internal discussions at Salesforce we concluded that we need better control
over the resources (mostly threads) consumed by HTable when used in a AppServer with many
client threads.
> Since HTable is not thread safe, the only options are cache them (in a custom thread
local or using HTablePool) or to create them on-demand.
> I propose a simple change: Add a new constructor to HTable that takes an optional ExecutorService
and HConnection instance. That would make HTable a pretty lightweight object and we would
manage the ES and HC separately.
> I'll upload a patch a soon to get some feedback.

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