[jira] [Commented] (HBASE-14296) ConnectionManager should validate the table existence before returning the table instance

["Biju Nair (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-14296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15177954#comment-15177954 ] 

Biju Nair commented on HBASE-14296:
-----------------------------------

>From user perspective, not throwing an exception when a table object is created on a non existent table will break the norm. They would need to remember to check the exception when first action is taken on the object which will be like trying to remember to check on file exists exception when trying to read or write to a file and not when a file is open. Since the number of table objects created in the life of a process will be small, it is worth the additional table existence checking in getTable call from the usability perspective. Something to consider.

> ConnectionManager should validate the table existence before returning the table instance
> -----------------------------------------------------------------------------------------
>
>                 Key: HBASE-14296
>                 URL: https://issues.apache.org/jira/browse/HBASE-14296
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 2.0.0, 1.2.0, 0.98.15
>            Reporter: Pankaj Kumar
>            Assignee: Pankaj Kumar
>            Priority: Minor
>
> Table instance should be returned only when table exist.
> {code}
>     public HTableInterface getTable(TableName tableName, ExecutorService pool) throws IOException {
>       if (managed) {
>         throw new NeedUnmanagedConnectionException();
>       }
>       return new HTable(tableName, this, tableConfig, rpcCallerFactory, rpcControllerFactory, pool);
>     }
> {code}



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