[jira] [Commented] (CASSANDRA-11877) Add support to legacy row serialization on BigTableWriter

["Tyler Hobbs (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-11877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15300988#comment-15300988 ] 

Tyler Hobbs commented on CASSANDRA-11877:
-----------------------------------------

bq. Make LegacyCell implement Unfiltered, so we can treat legacy and non-legacy partition uniformly on ColumnIndex.add

I'm not sure that's going to work well.  A {{LegacyCell}} is simply one cell, not a row, so it seems like there are going to be some conceptual mismatches.

It's also worth noting that the on-wire serialization is different from the on-disk serialization format.  In particular, range tombstones are handled differently (see {{ColumnIndex.add()}} and {{ColumnIndex.build()}} in 2.2).  It may be simplest (although still nasty) to try to port the 2.2 version of {{ColumnIndex}} to 3.0 using the {{Legacy}} classes, because the logic is quite a bit different than the 3.0 logic.

> Add support to legacy row serialization on BigTableWriter
> ---------------------------------------------------------
>
>                 Key: CASSANDRA-11877
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11877
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Tools
>            Reporter: Paulo Motta
>            Assignee: Kaide Mu
>            Priority: Minor
>
> In order to support writing pre-3.0 sstables, we must add support to legacy cell serialization to {{BigTableWriter}}. 



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