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Date: Mon, 24 Sep 2007 03:57:50 -0700 (PDT)
From: "V.Narayanan (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-3064) Implement the LogShipper that will
 enable the shipping of Log records from the master to the slave
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    [ https://issues.apache.org/jira/browse/DERBY-3064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12529834 ] 

V.Narayanan commented on DERBY-3064:
------------------------------------

>If I understand you correctly, this time interval will only be helpful in the "too soon" case, not the >"too late" case.

>When I wrote version 2 of the proof of concept patches (see DERBY-2872), I used a Daemon to >read log records at the slave side. I basically had:

>performWork {
>  if (messageWaitingForProcess) processMessage();
>}

>The waiting interval between each time performWork was called was way too high for this usage >(in the order of 3-10 seconds). This interval is probably too high for the log shipper as well, so >my guess is that you'll need something similar to an eternal loop with a wait(millis) somewhere in >this package. 

Does this mean atleast in the case of log shipper we would be forced to use threading since the DaemonService interval cannot be varied?

Guess I have a LogShipper specific answer for DaemonService vs Threads if I am right.

> Implement the LogShipper that will enable the shipping of Log records from the master to the slave
> --------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3064
>                 URL: https://issues.apache.org/jira/browse/DERBY-3064
>             Project: Derby
>          Issue Type: Sub-task
>            Reporter: V.Narayanan
>            Assignee: V.Narayanan
>         Attachments: LogShipperImpl_v1.diff, LogShipperImpl_v1.stat
>
>


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