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https://issues.apache.org/jira/browse/BOOKKEEPER-473?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ivan Kelly resolved BOOKKEEPER-473.
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Resolution: Done
> Improve write performance which compete with read on disk I/O
> -------------------------------------------------------------
>
> Key: BOOKKEEPER-473
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-473
> Project: Bookkeeper
> Issue Type: Bug
> Components: bookkeeper-server
> Affects Versions: 4.2.0, 4.3.0
> Reporter: Yixue (Andrew) Zhu
> Assignee: Yixue (Andrew) Zhu
> Labels: patch
>
> BOOKKEEPER-432 introduced SkipList to sort entries before adding them to
> entry log file, to improve ledger read performance.
> This task is to eliminate/reduce Index files, which contribute to sync write
> I/O spike (thousands of index files corresponding to active ledgers per
> bookie server).
> The write I/O contend with disk read I/O.
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