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From "Jon Haddad (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-10701) stop referring to batches as atomic
Date Mon, 16 Nov 2015 16:40:10 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-10701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15006894#comment-15006894
] 

Jon Haddad commented on CASSANDRA-10701:
----------------------------------------

There's a few references here: https://cassandra.apache.org/doc/cql3/CQL.html

Instead of:

{quote}By default, all operations in the batch are performed atomically. See the notes on
UNLOGGED for more details.{quote}

how about:

{quote}By default, all operations in the batch are performed as LOGGED, to ensure all mutations
eventually complete. See the notes on UNLOGGED for more details.{quote}

Replace:
{quote}By default, Cassandra uses a batch log to ensure all operations in a batch are applied
atomically. {quote}
With:
{quote}By default, Cassandra uses a batch log to ensure all operations eventually complete.
{quote}

Replace:
{quote}There is a performance penalty for batch atomicity when a batch spans multiple partitions.
If you do not want to incur this penalty, you can tell Cassandra to skip the batchlog with
the UNLOGGED option. If the UNLOGGED option is used, operations are only atomic within a single
partition.{quote}

With:
{quote}There is a performance penalty for batch logging when a batch spans multiple partitions.
If you do not want to incur this penalty, you can tell Cassandra to skip the batchlog with
the UNLOGGED option.{quote}

> stop referring to batches as atomic
> -----------------------------------
>
>                 Key: CASSANDRA-10701
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10701
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Jon Haddad
>            Priority: Minor
>
> We still refer to logged batches as atomic, we should remove those references.



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