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https://issues.apache.org/jira/browse/CASSANDRA-6379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13899839#comment-13899839
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Tyler Hobbs edited comment on CASSANDRA-6379 at 2/13/14 12:39 AM:
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6379.txt (and [branch|https://github.com/thobbs/cassandra/tree/CASSANDRA-6379])
replaces {{index_interval}} with {{min_index_interval}} and
{{max_index_interval}}. When migrating, the existing {{index_interval}} value
is used for {{min_index_interval}}. I chose 2048 for the default
{{max_index_interval}}; in practice, this limit should only be hit for
infrequently-read SSTables when the index summary memory pool is very full.
If you want to test it out, I suggest setting logging to TRACE for
o.a.c.io.sstable.IndexSummaryManager, setting {{index_summary_capacity_in_mb}}
to 1, and {{index_summary_resize_interval_in_minutes}} to 1. After inserting a
few million rows with stress, the index summary pool will hit capacity and some
resizing will happen. The JMX functions on IndexSummaryManager are also handy.
was (Author: thobbs):
6379.txt (and [branch|https://github.com/thobbs/cassandra/tree/CASSANDRA-6379])
replaces {{index_interval}} with {{min_index_interval}} and
{{max_index_interval}}. When migrating, the existing {{index_interval}} value
is used for {{min_index_interval}}. I chose 2048 for the default
{{max_index_interval}}; in practice, this limit should only be hit for
infrequently-read SSTables when the index summary memory pool is very full.
If you want to test it out, I suggest setting logging to TRACE for
o.a.c.io.sstable.IndexSummary manager, setting {{index_summary_capacity_in_mb}}
to 1, and {{index_summary_resize_interval_in_minutes}} to 1. After inserting a
few million rows with stress, the index summary pool will hit capacity and some
resizing will happen. The JMX functions on IndexSummaryManager are also handy.
> Replace index_interval with min/max_index_interval
> --------------------------------------------------
>
> Key: CASSANDRA-6379
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6379
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Reporter: Tyler Hobbs
> Assignee: Tyler Hobbs
> Fix For: 2.1
>
> Attachments: 6379-thrift-gen.txt, 6379.txt
>
>
> As a continuation of the work in CASSANDRA-5519, we want to replace the
> {{index_interval}} attribute of tables with {{min_index_interval}} and
> {{max_index_interval}}.
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