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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 Fri, 26 Sep 2014 04:28:34 GMT

    [ https://issues.apache.org/jira/browse/ACCUMULO-3089?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14148730#comment-14148730
] 

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

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

    https://github.com/apache/accumulo/pull/16#discussion_r18073355
  
    --- Diff: core/src/main/java/org/apache/accumulo/core/client/admin/TableOperations.java
---
    @@ -103,6 +103,25 @@
       void create(String tableName, boolean versioningIter, TimeType timeType) throws AccumuloException,
AccumuloSecurityException, TableExistsException;
     
       /**
    +   * @param tableName
    +   *          the name of the table
    +   * @param limitVersion
    +   *          Enables/disables the versioning iterator, which will limit the number of
Key versions kept.
    +   * @param timeType
    +   *          specifies logical or real-time based time recording for entries in the
table
    +   * @param properties
    +   *          initial table properties the user wants
    +   * @throws AccumuloException
    +   *           if a general error occurs
    +   * @throws AccumuloSecurityException
    +   *           if the user does not have permission
    +   * @throws TableExistsException
    +   *           if the table already exists
    +   */
    +  void create(String tableName, boolean limitVersion, TimeType timeType, Map<String,String>
properties) throws AccumuloException, AccumuloSecurityException,
    --- End diff --
    
    The extra constructor is needed so that the per-table volume chooser can be specified
before the default tablet gets created. Currently, the RPC supports setting initial properties,
but we didn't expose that in the API. We just used it for initial iterators.


> 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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