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From "Joydeep Sen Sarma (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-250) shared memory java dbm for map-side joins
Date Sun, 25 Jan 2009 08:35:59 GMT

    [ https://issues.apache.org/jira/browse/HIVE-250?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12667056#action_12667056
] 

Joydeep Sen Sarma commented on HIVE-250:
----------------------------------------

i think we had looked at berkeley db as well - seemed way too complicated to modify. it's
a few lines mod in jdbm (fingers crossed).

> shared memory java dbm for map-side joins
> -----------------------------------------
>
>                 Key: HIVE-250
>                 URL: https://issues.apache.org/jira/browse/HIVE-250
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Joydeep Sen Sarma
>            Assignee: Joydeep Sen Sarma
>
> can use either:
> - sdbm: http://freshmeat.net/projects/solingerjavasdbm/
> - jdbm: http://sourceforge.net/projects/jdbm/
> both need modifications to use file mmaps instead of regular file io. will do some testing
to see if there's a major difference between the two.

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