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From "Jay Zhuang (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-9989) Optimise BTree.Buider
Date Mon, 27 Aug 2018 21:30:00 GMT


Jay Zhuang commented on CASSANDRA-9989:

Sorry, I misunderstood the last part. I updated the patch to evenly split the values to all
child nodes. The TREE_SIZE is starting from index 0 instead of 1. {{left}} is replaced with
an incrementing counter, please review:
|branch | [9989|]|

{{}} is timing out even for trunk, I'm increasing timeout and run through
the test.

> Optimise BTree.Buider
> ---------------------
>                 Key: CASSANDRA-9989
>                 URL:
>             Project: Cassandra
>          Issue Type: Sub-task
>            Reporter: Benedict
>            Assignee: Jay Zhuang
>            Priority: Minor
>             Fix For: 4.x
>         Attachments: 9989-trunk.txt
> BTree.Builder could reduce its copying, and exploit toArray more efficiently, with some
work. It's not very important right now because we don't make as much use of its bulk-add
methods as we otherwise might, however over time this work will become more useful.

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