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https://issues.apache.org/jira/browse/CASSANDRA-3945?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jonathan Ellis resolved CASSANDRA-3945.
---------------------------------------

    Resolution: Duplicate
      Assignee:     (was: Chris Goffinet)

CASSANDRA-5555 fixes this
                
> Support incremental/batch sizes for BulkRecordWriter, due to GC overhead 
> issues
> -------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-3945
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3945
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Chris Goffinet
>            Priority: Minor
>
> When loading large amounts of data, currently the BulkRecordWriter will write 
> out all the sstables, then stream them. This actually caused us GC overhead 
> issues, due to our heap sizes for reducers. We ran into a problem where the 
> number of SSTables on disk that had to be open would cause the jvm process to 
> die. We also wanted a way to incrementally stream them as we created them. I 
> created support for setting this, the default behavior is wait for them to be 
> created. But if you increase to >= 1, you can determine the batch size.

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