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From "Chris Goffinet (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1093) BinaryMemtable interface silently dropping data.
Date Sat, 15 May 2010 23:57:43 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1093?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12867933#action_12867933
] 

Chris Goffinet commented on CASSANDRA-1093:
-------------------------------------------

I've never seen this happen and I've done many imports. At the very end of the import, are
you calling nodetool flush <Keyspace> ? 

> BinaryMemtable interface silently dropping data.
> ------------------------------------------------
>
>                 Key: CASSANDRA-1093
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1093
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: Linux Centos5, Fedora Core 4. Java HotSpot Server 1.6.0_14. See
readme for more details.
>            Reporter: Toby Jungen
>             Fix For: 0.6.2
>
>         Attachments: cassandra_bmt_test.tar.gz
>
>
> I've been attempting to use the Binary Memtable (BMT) interface to load a large number
of rows. During my testing, I discovered that on larger loads (~1 million rows), occasionally
some of the data never appears in the database. This happens in a non-deterministic manner,
as sometimes all the data loads fine, and other times a significant chunk goes missing. No
errors are ever logged to indicate a problem. I'm attaching some sample code that approximates
my application's usage of Cassandra and explains this bug in more detail.

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