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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-867) Support common use cases for loading classes from context (e.g. HDFS)
Date Thu, 24 Jan 2013 01:42:11 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-867?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13561330#comment-13561330
] 

Hudson commented on ACCUMULO-867:
---------------------------------

Integrated in Accumulo-Trunk-Hadoop-2.0 #19 (See [https://builds.apache.org/job/Accumulo-Trunk-Hadoop-2.0/19/])
    ACCUMULO-462 ACCUMULO-867 made constraints reload and use new context classloader (Revision
1437810)

     Result = UNSTABLE
kturner : 
Files : 
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/Accumulo.java
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/constraints/ConstraintChecker.java
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/constraints/ConstraintLoader.java
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/master/LiveTServerSet.java
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/master/Master.java
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/tabletserver/FileManager.java
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/tabletserver/Tablet.java
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/tabletserver/TabletServer.java
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/tabletserver/TabletServerResourceManager.java
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/trace/TraceServer.java
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/util/TServerUtils.java
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/util/time/SimpleTimer.java
* /accumulo/trunk/server/src/main/java/org/apache/accumulo/server/zookeeper/DistributedWorkQueue.java
* /accumulo/trunk/start/src/main/java/org/apache/accumulo/start/classloader/vfs/ContextManager.java
* /accumulo/trunk/test/src/main/java/org/apache/accumulo/test/MiniAccumuloCluster.java

                
> Support common use cases for loading classes from context (e.g. HDFS)
> ---------------------------------------------------------------------
>
>                 Key: ACCUMULO-867
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-867
>             Project: Accumulo
>          Issue Type: Sub-task
>          Components: start
>            Reporter: Keith Turner
>            Assignee: Keith Turner
>             Fix For: 1.5.0
>
>
> We need to decide how want to make this new classloader functionality available to users.
  
> One use case is making per-table class loaders availiable.   This would allow the user
to set a per table property like the following.
> {noformat}
>    table.classpath=hdfs://nn:8092/myApp
> {noformat}
> Setting this would allow iterators specific to the table to be loaded from a given location.
  Currently when a user iterator is placed in lib/ext all tables see the iterator.
> Another possible use case is per-scan classpath. 

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