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Date: Thu, 23 Aug 2007 02:40:31 -0700 (PDT)
From: =?utf-8?Q?J=C3=B8rgen_L=C3=B8land_=28JIRA=29?= <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Updated: (DERBY-2926) Replication: Add a log buffer for log
 records that should be shipped to the slave
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     [ https://issues.apache.org/jira/browse/DERBY-2926?page=3Dcom.atlassia=
n.jira.plugin.system.issuetabpanels:all-tabpanel ]

J=C3=B8rgen L=C3=B8land updated DERBY-2926:
---------------------------------

    Derby Info: [Patch Available]

> Replication: Add a log buffer for log records that should be shipped to t=
he slave
> -------------------------------------------------------------------------=
--------
>
>                 Key: DERBY-2926
>                 URL: https://issues.apache.org/jira/browse/DERBY-2926
>             Project: Derby
>          Issue Type: Sub-task
>          Components: Services
>    Affects Versions: 10.4.0.0
>            Reporter: J=C3=B8rgen L=C3=B8land
>            Assignee: J=C3=B8rgen L=C3=B8land
>             Fix For: 10.4.0.0
>
>         Attachments: bytebuffer_resizefix_1.diff, bytebuffer_resizefix_1.=
stat, bytebuffer_v1-fixheader.diff, bytebuffer_v1-fixheader.stat, bytebuffe=
r_v1.diff, bytebuffer_v1.stat, bytebuffer_v1a.diff, bytebuffer_v1a.stat, by=
tebuffer_v2.diff, bytebuffer_v2.stat, bytebuffer_v2b.diff, bytebuffer_v2b.s=
tat
>
>
> When a Derby instance has the master role for a database, log records are=
 shipped to the slave to keep it up to date. A buffer is needed because the=
 log records should not be shipped one at a time. Also, writing the log rec=
ords to a buffer instead of sending them immediately removes the network co=
mmunication from the critical path for the transaction.

--=20
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