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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Reopened: (CASSANDRA-2255) ColumnFamilyOutputFormat drops mutations when batches fill up.
Date Mon, 28 Feb 2011 22:55:37 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-2255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Ellis reopened CASSANDRA-2255:
---------------------------------------


Doesn't this mean batch sizes can be arbitrarily large?  Not only will this cause latency
spikes on the server but you could OOM building the monster batch.

> ColumnFamilyOutputFormat drops mutations when batches fill up.
> --------------------------------------------------------------
>
>                 Key: CASSANDRA-2255
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2255
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Hadoop
>    Affects Versions: 0.7.2, 0.8
>            Reporter: Eldon Stegall
>         Attachments: 0001_Stop_dropping_mutations.txt
>
>
> queue.poll() takes a mutation,
> but then the batch is already full,
> so the while loop exits, ant the mutation we just got is dropped.

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