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From "Vladimir Rodionov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11936) IsolationLevel must be attribute of a Query not a Scan
Date Wed, 10 Sep 2014 21:24:33 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14129137#comment-14129137
] 

Vladimir Rodionov commented on HBASE-11936:
-------------------------------------------

READ_UNCOMMITTED should be much cheaper and efficient than it is now (in a future). For Get
operation to take advantage of a new and upcoming changes in Scanner machinery we need to
control isolation level in a Get itself.

> IsolationLevel must be attribute of a Query not a Scan
> ------------------------------------------------------
>
>                 Key: HBASE-11936
>                 URL: https://issues.apache.org/jira/browse/HBASE-11936
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>            Reporter: Vladimir Rodionov
>            Assignee: Vladimir Rodionov
>
> The Get operation is implemented in HBase as a Scan. The default isolation level for
Scan is READ_COMMITTED. The API to change the isolation level is part of Scan class and there
is no way for Get operation to change this from default. We should move this API up to Query
(which is a parent of both: Scan and Get). 



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