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https://issues.apache.org/jira/browse/CASSANDRA-3333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13125011#comment-13125011
]
Brandon Williams commented on CASSANDRA-3333:
---------------------------------------------
Doesn't quite work:
{noformat}
INFO 08:19:01,875 Creating new commitlog segment
/var/lib/cassandra/commitlog/CommitLog-1318339141875.log
ERROR 08:19:01,884 Fatal exception in thread Thread[COMMIT-LOG-WRITER,5,main]
java.lang.AssertionError
at
org.apache.cassandra.utils.FBUtilities.serialize(FBUtilities.java:782)
at
org.apache.cassandra.db.RowMutation.getSerializedBuffer(RowMutation.java:278)
at
org.apache.cassandra.db.commitlog.CommitLogSegment.write(CommitLogSegment.java:122)
at
org.apache.cassandra.db.commitlog.CommitLog$LogRecordAdder.run(CommitLog.java:605)
at
org.apache.cassandra.db.commitlog.PeriodicCommitLogExecutorService$1.runMayThrow(PeriodicCommitLogExecutorService.java:49)
at
org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:30)
at java.lang.Thread.run(Thread.java:662)
{noformat}
> remove more copies from read/write network path
> -----------------------------------------------
>
> Key: CASSANDRA-3333
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3333
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Jonathan Ellis
> Priority: Minor
> Labels: network
> Fix For: 1.0.1
>
> Attachments: 0001-clean-up-Serializer-mess.patch,
> 0002-introduce-FBUtilities.serialize-to-reduce-copies.patch,
> 0002-reduce-copies.patch
>
>
> RowMutation.serializedBuffer and ReadVerbHandler both do an extra copy of the
> serialized data. We can avoid this be pre-computing the serialized size and
> allocating an appropriate buffer.
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