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From "Jonathan Ellis (JIRA)" <>
Subject [jira] Commented: (CASSANDRA-1702) handle skipping bad rows in LazilyCompacted path
Date Wed, 10 Nov 2010 14:47:16 GMT


Jonathan Ellis commented on CASSANDRA-1702:

It's difficult, because they are both happening during "writer.append(row)" on the Lazy path.
 Open to suggestions.

> handle skipping bad rows in LazilyCompacted path
> ------------------------------------------------
>                 Key: CASSANDRA-1702
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 0.7 beta 1
>            Reporter: Jonathan Ellis
>            Assignee: Jonathan Ellis
>            Priority: Minor
>             Fix For: 0.7.0
>         Attachments: 1702.txt
> it's easy to handle skipping bad rows during compation in the PreCompacted (merged-in-memory)
path and we have done this for a long time.  It is harder in the LazilyCompacted path since
we have already started writing data when we discover that some of the source rows cannot
be deserialized.  This adds mark/reset to SSTableWriter so compaction can skip back to the
beginning in these circumstances.

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