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https://issues.apache.org/jira/browse/CASSANDRA-4180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13630714#comment-13630714
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Jonathan Ellis commented on CASSANDRA-4180:
-------------------------------------------
Pushed updated code to http://github.com/jbellis/cassandra/tree/4180-3.
Besides the rebase, this cleans things up by making ColumnIndex the sole entity
responsible for writing the row header (thus removing the flag I'd added to it
in the earlier version).
> Single-pass compaction for LCR
> ------------------------------
>
> Key: CASSANDRA-4180
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4180
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Sylvain Lebresne
> Assignee: Jonathan Ellis
> Labels: compaction
> Fix For: 2.0
>
> Attachments: scrub-error.txt
>
>
> LazilyCompactedRow reads all data twice to compact a row which is obviously
> inefficient. The main reason we do that is to compute the row header.
> However, CASSANDRA-2319 have removed the main part of that row header. What
> remains is the size in bytes and the number of columns, but it should be
> relatively simple to remove those, which would then remove the need for the
> two-phase compaction.
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