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https://issues.apache.org/jira/browse/CASSANDRA-1278?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13036447#comment-13036447
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Brandon Williams commented on CASSANDRA-1278:
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+1 on more visibility. It'd be nice if it printed the filename and the time it
took for each time, since just having the percentages reset is a bit confusing.
Also, this should respect SS.RING_DELAY instead of arbitrarily choosing an
amount of time to wait for gossip.
I loaded 10M rows with stress.java defaults, then bulkloaded them from one
machine to another in 75s (accounting for gossip delay.) This totaled 3.1G of
data, so about 44MB/s. Conversely, it took about 15 minutes to load with
stress.
> Make bulk loading into Cassandra less crappy, more pluggable
> ------------------------------------------------------------
>
> Key: CASSANDRA-1278
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1278
> Project: Cassandra
> Issue Type: Improvement
> Components: Tools
> Reporter: Jeremy Hanna
> Assignee: Sylvain Lebresne
> Fix For: 0.8.1
>
> Attachments: 0001-Add-bulk-loader-utility.patch,
> 1278-cassandra-0.7-v2.txt, 1278-cassandra-0.7.1.txt, 1278-cassandra-0.7.txt
>
> Original Estimate: 40h
> Time Spent: 40h 40m
> Remaining Estimate: 0h
>
> Currently bulk loading into Cassandra is a black art. People are either
> directed to just do it responsibly with thrift or a higher level client, or
> they have to explore the contrib/bmt example -
> http://wiki.apache.org/cassandra/BinaryMemtable That contrib module requires
> delving into the code to find out how it works and then applying it to the
> given problem. Using either method, the user also needs to keep in mind that
> overloading the cluster is possible - which will hopefully be addressed in
> CASSANDRA-685
> This improvement would be to create a contrib module or set of documents
> dealing with bulk loading. Perhaps it could include code in the Core to make
> it more pluggable for external clients of different types.
> It is just that this is something that many that are new to Cassandra need to
> do - bulk load their data into Cassandra.
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