Support incremental/batch sizes for BulkRecordWriter, due to GC overhead issues
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Key: CASSANDRA-3945
URL: https://issues.apache.org/jira/browse/CASSANDRA-3945
Project: Cassandra
Issue Type: Bug
Reporter: Chris Goffinet
Assignee: Chris Goffinet
Priority: Minor
Fix For: 1.1.0
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 watch 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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