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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6091) Better Vnode support in hadoop/pig
Date Fri, 18 Oct 2013 22:59:43 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6091?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13799632#comment-13799632
] 

Jonathan Ellis commented on CASSANDRA-6091:
-------------------------------------------

bq. Why are you stopping this implementation

Two words: opportunity cost.

bq.  With smaller ranges and the same input split size, there's a higher chance that the split
will be outside of a single virtual token range.

Hmm, good point.  Let's see how that bears out.

> Better Vnode support in hadoop/pig
> ----------------------------------
>
>                 Key: CASSANDRA-6091
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6091
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Hadoop
>            Reporter: Alex Liu
>            Assignee: Alex Liu
>
> CASSANDRA-6084 shows there are some issues during running hadoop/pig job if vnodes are
enable. Also the hadoop performance of vnode enabled nodes  are bad for there are so many
splits.
> The idea is to combine vnode splits into a big sudo splits so it work like vnode is disable
for hadoop/pig job



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