[
https://issues.apache.org/jira/browse/CASSANDRA-2470?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13020109#comment-13020109
]
Jason Haruska commented on CASSANDRA-2470:
------------------------------------------
This bug also affects adding new nodes to a cluster. In our case, the data
streaming finishes in 20-30 minutes with the secondary indexes taking 3-4 hours
to build.
> Secondary Indexes Build Very Slowly
> -----------------------------------
>
> Key: CASSANDRA-2470
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2470
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Benjamin Coverston
> Labels: repair, secondary_index
>
> While running repair I noticed that the time it took to run was easily
> dominated by building the secondary indexes. They currently build at a rate
> of < 200KB/Second. This means that indexing a 500MB file takes nearly an hour
> to index the file.
> Because this happens on the compaction thread it also causes repair to back
> up in general, which for very active systems is a very bad thing.
> I suggest we look at it in the hope that we can improve the rate in which we
> build the indexes by an order of magnitude.
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
