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Date: Mon, 6 Oct 2008 07:37:44 -0700 (PDT)
From: "Jerry Cwiklik (JIRA)" <uima-dev@incubator.apache.org>
To: uima-dev@incubator.apache.org
Subject: [jira] Updated: (UIMA-1140) Embedded broker should be eliminated
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     [ https://issues.apache.org/jira/browse/UIMA-1140?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jerry Cwiklik updated UIMA-1140:
--------------------------------

    Attachment: uimaj-as-core-UIMA-1140-patch-01.txt
                uimaj-as-activemq-UIMA-1140-patch-02.txt
                uimaj-as-activemq-UIMA-1140-patch-01.txt

Enabled default messaging between colocated components using java queues. Removed conditional 'UseVmTransport'. Enabled support for setting number of listener threads on both input and output queues for colocated components. Modified reply JMS connection to broker to always send messages asynchronously. Optimized JmsOutputChannel.java to set the Host IP once in the constructor, instead of computing it for every outgoing message. Profiler indicates that computing the Host IP is quite costly. Modified global boolean flags to be volatile to make sure that the changes made are immediately visible to other threads.

> Embedded broker should be eliminated
> ------------------------------------
>
>                 Key: UIMA-1140
>                 URL: https://issues.apache.org/jira/browse/UIMA-1140
>             Project: UIMA
>          Issue Type: Improvement
>          Components: Async Scaleout
>            Reporter: Eddie Epstein
>            Assignee: Marshall Schor
>         Attachments: uimaj-as-activemq-UIMA-1140-patch-01.txt, uimaj-as-activemq-UIMA-1140-patch-02.txt, uimaj-as-activemq-UIMA-1140-patch.txt, uimaj-as-core-UIMA-1140-patch-01.txt, uimaj-as-core-UIMA-1140-patch.txt, uimaj-as-jms-UIMA-1140-patch.txt
>
>
> When an async aggregate is deployed, the request/reply queues for colocated delegates use an embedded broker. After UIMA-1130 is complete, all reply queues for remote delegates will be located on the same external broker hosting the delegate's request queue. At that point the function of the colocated broker can be replace with simple Java queues.

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