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Posted to commits@cassandra.apache.org by "Dinesh Joshi (Jira)" <ji...@apache.org> on 2020/04/30 00:13:00 UTC
[jira] [Updated] (CASSANDRA-15396) RandomAccessReader does not
override skip or skipBytes so will do a lot of disk io when n is large
[ https://issues.apache.org/jira/browse/CASSANDRA-15396?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dinesh Joshi updated CASSANDRA-15396:
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Summary: RandomAccessReader does not override skip or skipBytes so will do a lot of disk io when n is large (was: RAR does not override skip or skipBytes so will do a lot of disk io when n is large)
> RandomAccessReader does not override skip or skipBytes so will do a lot of disk io when n is large
> --------------------------------------------------------------------------------------------------
>
> Key: CASSANDRA-15396
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15396
> Project: Cassandra
> Issue Type: Improvement
> Components: Local/SSTable
> Reporter: David Capwell
> Assignee: David Capwell
> Priority: Normal
>
> RandomAccessReader does not override skip or skipBytes which becomes a problem when the size of n (the bytes to skip) is larger than a single buffer; in these cases we can rely on seek to avoid the extra disk io.
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