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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ACCUMULO-3089) Create a volume chooser that makes decisions based on table attributes
Date Wed, 24 Sep 2014 18:15:35 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-3089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14146654#comment-14146654
] 

ASF GitHub Bot commented on ACCUMULO-3089:
------------------------------------------

Github user keith-turner commented on a diff in the pull request:

    https://github.com/apache/accumulo/pull/16#discussion_r17989515
  
    --- Diff: server/base/src/main/java/org/apache/accumulo/server/fs/GeneralVolumeChooser.java
---
    @@ -0,0 +1,60 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one or more
    + * contributor license agreements.  See the NOTICE file distributed with
    + * this work for additional information regarding copyright ownership.
    + * The ASF licenses this file to You under the Apache License, Version 2.0
    + * (the "License"); you may not use this file except in compliance with
    + * the License.  You may obtain a copy of the License at
    + *
    + *     http://www.apache.org/licenses/LICENSE-2.0
    + *
    + * Unless required by applicable law or agreed to in writing, software
    + * distributed under the License is distributed on an "AS IS" BASIS,
    + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    + * See the License for the specific language governing permissions and
    + * limitations under the License.
    + */
    +package org.apache.accumulo.server.fs;
    +
    +import java.util.Map;
    +
    +import org.apache.accumulo.core.conf.AccumuloConfiguration.AllFilter;
    +import org.apache.accumulo.core.conf.AccumuloConfiguration.PropertyFilter;
    +import org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader;
    +import org.apache.log4j.Logger;
    +
    +public class GeneralVolumeChooser implements VolumeChooser {
    --- End diff --
    
    User facing documentation is needed somewhere to inform users how they can put these differently
volume choosers and the custom props together.  Should also tell explain why they should use
create table w/ props for this.
    
    Could do that as javadoc on these volume choosers and/or in the user manual.


> Create a volume chooser that makes decisions based on table attributes
> ----------------------------------------------------------------------
>
>                 Key: ACCUMULO-3089
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3089
>             Project: Accumulo
>          Issue Type: Improvement
>            Reporter: Christopher Tubbs
>            Assignee: Jenna Huston
>
> Use case:
> User provisions multiple volumes, some with tmpfs drives, some with SSDs, some with traditional
magnetic spindle hard drives. A volume chooser could use attribute information on tables (ACCUMULO-2841)
to decide which volume to choose when creating new tablets.



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