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Posted to commits@cassandra.apache.org by "Mck SembWever (JIRA)" <ji...@apache.org> on 2011/01/03 20:00:59 UTC
[jira] Issue Comment Edited: (CASSANDRA-1125) Filter out
ColumnFamily rows that aren't part of the query
[ https://issues.apache.org/jira/browse/CASSANDRA-1125?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12976876#action_12976876 ]
Mck SembWever edited comment on CASSANDRA-1125 at 1/3/11 1:58 PM:
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Jonathan: do you mean the IndexExpression and IndexClause and Table.open("Keyspace1").getColumnFamilyStore("Indexed1").scan(clause, filter);
being used inside of ColumnFamilyRecordReader.maybeInit() ??
was (Author: michaelsembwever):
Jonathan: do you mean the IndexExpression and IndexClause and Table.open("Keyspace1").getColumnFamilyStore("Indexed1").scan(clause, filter);
inside of ColumnFamilyRecordReader.maybeInit() ??
> Filter out ColumnFamily rows that aren't part of the query
> ----------------------------------------------------------
>
> Key: CASSANDRA-1125
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1125
> Project: Cassandra
> Issue Type: Improvement
> Components: Hadoop
> Reporter: Jeremy Hanna
> Priority: Minor
> Fix For: 0.7.1
>
>
> Currently, when running a MapReduce job against data in a Cassandra data store, it reads through all the data for a particular ColumnFamily. This could be optimized to only read through those rows that have to do with the query.
> It's a small change but wanted to put it in Jira so that it didn't fall through the cracks.
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