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From "Brandon Williams (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-3264) Add wide row paging for ColumnFamilyInputFormat and ColumnFamilyOutputFormat
Date Mon, 03 Oct 2011 21:39:34 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-3264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13119646#comment-13119646
] 

Brandon Williams commented on CASSANDRA-3264:
---------------------------------------------

bq. That would work too, but I think this is a big enough issue for folks running with timeseries
type data that we should fix it before we jump to CQL.

I'm not suggested we jump to CQL, just implement the same idea.
                
> Add wide row paging for ColumnFamilyInputFormat and ColumnFamilyOutputFormat
> ----------------------------------------------------------------------------
>
>                 Key: CASSANDRA-3264
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3264
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Hadoop
>            Reporter: T Jake Luciani
>              Labels: lhf
>             Fix For: 0.8.7
>
>
> Hadoop input/output formats currently can OOM on wide rows.
> We can add a new option to the ConfigHelper like columnPagingSize with a default of Integer.MAX_VALUE.
> The input format would page the row internally rather than pull it over at once.
> The output format could also use this to avoid sending huge rows over at once.

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