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From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12902) Refactor TxnHandler to be an interface
Date Sat, 30 Jan 2016 01:46:39 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15124607#comment-15124607
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Lefty Leverenz commented on HIVE-12902:
---------------------------------------

Doc note:  This adds *hive.metastore.txn.store.impl* to HiveConf.java, so it needs to be documented
in the wiki for release 2.1.0.  (TODOC2.1 label added.)

It belongs in the MetaStore section of Configuration Properties with a crossreference from
Transactions and Compactor, or perhaps vice versa.  It also needs to be added to the parameter
table in the Hive Transactions doc.

* [Configuration Properties -- MetaStore | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-MetaStore]
* [Configuration Properties -- Transactions and Compactor | https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-TransactionsandCompactor]
* [Hive Transactions -- New Configuration Parameters for Transactions | https://cwiki.apache.org/confluence/display/Hive/Hive+Transactions#HiveTransactions-NewConfigurationParametersforTransactions]

> Refactor TxnHandler to be an interface
> --------------------------------------
>
>                 Key: HIVE-12902
>                 URL: https://issues.apache.org/jira/browse/HIVE-12902
>             Project: Hive
>          Issue Type: Improvement
>          Components: Metastore, Transactions
>    Affects Versions: 2.0.0
>            Reporter: Alan Gates
>            Assignee: Alan Gates
>              Labels: TODOC2.1
>             Fix For: 2.1.0
>
>         Attachments: HIVE-12902.2.patch, HIVE-12902.3.patch, HIVE-12902.patch
>
>
> TxnHandler (and it's extender CompactionTxnHandler) implement the transaction functionality
in the metastore.  These need to be re-factored as interfaces so that we can have a separate
implementation for the HBase metastore.



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