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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-962) Isolation level support in HBase transactions
Date Tue, 28 Oct 2008 04:27:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12643124#action_12643124
] 

stack commented on HBASE-962:
-----------------------------

Jaeyun Noh: Do you think it possible to realize all isolation models using the OCC that is
currently at the heart of Clint's Transactional HBase?  I see that for MVCC, in postgres,
they only do two internally: http://developer.postgresql.org/pgdocs/postgres/transaction-iso.html.

> Isolation level support in HBase transactions
> ---------------------------------------------
>
>                 Key: HBASE-962
>                 URL: https://issues.apache.org/jira/browse/HBASE-962
>             Project: Hadoop HBase
>          Issue Type: Improvement
>          Components: io, ipc, regionserver
>            Reporter: Jaeyun Noh
>
> There will be some case that we don't strict transaction isolation level. Just a ReadCommitted
iso-level will be sufficient in some application. (Non-repeatable read, phantom possible)
> And, it would be great to specify which isolation level will be used in HBase transaction
by an enumeration.

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