[jira] [Closed] (ROCKETMQ-25) Query Msg by key: Possible concurrent access to LinkedList

2017-01-03 Thread Zhanhui Li (JIRA)

 [ 
https://issues.apache.org/jira/browse/ROCKETMQ-25?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Zhanhui Li closed ROCKETMQ-25.
--
Resolution: Fixed

> Query Msg by key: Possible concurrent access to LinkedList
> --
>
> Key: ROCKETMQ-25
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-25
> Project: Apache RocketMQ
>  Issue Type: Bug
>  Components: rocketmq-client, rocketmq-tools
>Affects Versions: 4.0.0-incubating
> Environment: All
>Reporter: Zhanhui Li
>Assignee: Xiaorui Wang
>Priority: Minor
> Fix For: 4.0.0-incubating
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> As queries are delivered to all brokers asynchronously, callbacks may be 
> executed simultaneously, which results in concurrent access to LinkedList, a 
> thread-unsafe container.



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[jira] [Commented] (ROCKETMQ-25) Query Msg by key: Possible concurrent access to LinkedList

2017-01-03 Thread ASF subversion and git services (JIRA)

[ 
https://issues.apache.org/jira/browse/ROCKETMQ-25?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15797418#comment-15797418
 ] 

ASF subversion and git services commented on ROCKETMQ-25:
-

Commit b421d48c476e74a8c7bb8129979df1dc0cb5a5a5 in incubator-rocketmq's branch 
refs/heads/master from [~lizhanhui]
[ https://git-wip-us.apache.org/repos/asf?p=incubator-rocketmq.git;h=b421d48 ]

Fix https://issues.apache.org/jira/browse/ROCKETMQ-25


> Query Msg by key: Possible concurrent access to LinkedList
> --
>
> Key: ROCKETMQ-25
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-25
> Project: Apache RocketMQ
>  Issue Type: Bug
>  Components: rocketmq-client, rocketmq-tools
>Affects Versions: 4.0.0-incubating
> Environment: All
>Reporter: Zhanhui Li
>Assignee: Xiaorui Wang
>Priority: Minor
> Fix For: 4.0.0-incubating
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> As queries are delivered to all brokers asynchronously, callbacks may be 
> executed simultaneously, which results in concurrent access to LinkedList, a 
> thread-unsafe container.



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[jira] [Comment Edited] (ROCKETMQ-25) Query Msg by key: Possible concurrent access to LinkedList

2017-01-03 Thread Zhanhui Li (JIRA)

[ 
https://issues.apache.org/jira/browse/ROCKETMQ-25?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15797389#comment-15797389
 ] 

Zhanhui Li edited comment on ROCKETMQ-25 at 1/4/17 7:18 AM:


Unit tests is not viable for this scenario as tools like Mockito cannot mock 
objects and apply multi-threads at the same time. see 
https://github.com/mockito/mockito/wiki/FAQ section "Is Mockito thread-safe?"
Here I would use code analysis.

when querying message by message key, the command executor needs to query 
multiple brokers.
See MQAdminImpl#288 On query result returns, callbacks are executed. When 
results return concurrently, multiple threads from Netty executor pool will 
concurrently access thread-unsafe container LinkedList. This would brings about 
exception complaining concurrent-modification.


was (Author: lizhanhui):
Unit tests is not viable for this scenario as tools like Mockito cannot mock 
objects and apply multi-threads at the same time. see 
https://github.com/mockito/mockito/wiki/FAQ section "Is Mockito thread-safe?"
Here I would use code analysis.

when querying message by message key, the command executor needs to query 
multiple brokers. On query result returns, callbacks are executed. When results 
return concurrently, multiple threads from netty executor pool will 
concurrently access thread-unsafe container LinkedList. This would brings about 
exception complaining concurrent-modification.

> Query Msg by key: Possible concurrent access to LinkedList
> --
>
> Key: ROCKETMQ-25
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-25
> Project: Apache RocketMQ
>  Issue Type: Bug
>  Components: rocketmq-client, rocketmq-tools
>Affects Versions: 4.0.0-incubating
> Environment: All
>Reporter: Zhanhui Li
>Assignee: Xiaorui Wang
>Priority: Minor
> Fix For: 4.0.0-incubating
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> As queries are delivered to all brokers asynchronously, callbacks may be 
> executed simultaneously, which results in concurrent access to LinkedList, a 
> thread-unsafe container.



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[jira] [Commented] (ROCKETMQ-25) Query Msg by key: Possible concurrent access to LinkedList

2017-01-03 Thread Zhanhui Li (JIRA)

[ 
https://issues.apache.org/jira/browse/ROCKETMQ-25?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15797389#comment-15797389
 ] 

Zhanhui Li commented on ROCKETMQ-25:


Unit tests is not viable for this scenario as tools like Mockito cannot mock 
objects and apply multi-threads at the same time. see 
https://github.com/mockito/mockito/wiki/FAQ section "Is Mockito thread-safe?"
Here I would use code analysis.

when querying message by message key, the command executor needs to query 
multiple brokers. On query result returns, callbacks are executed. When results 
return concurrently, multiple threads from netty executor pool will 
concurrently access thread-unsafe container LinkedList. This would brings about 
exception complaining concurrent-modification.

> Query Msg by key: Possible concurrent access to LinkedList
> --
>
> Key: ROCKETMQ-25
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-25
> Project: Apache RocketMQ
>  Issue Type: Bug
>  Components: rocketmq-client, rocketmq-tools
>Affects Versions: 4.0.0-incubating
> Environment: All
>Reporter: Zhanhui Li
>Assignee: Xiaorui Wang
>Priority: Minor
> Fix For: 4.0.0-incubating
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> As queries are delivered to all brokers asynchronously, callbacks may be 
> executed simultaneously, which results in concurrent access to LinkedList, a 
> thread-unsafe container.



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[jira] [Updated] (ROCKETMQ-17) Develop a client api open standard for distributed messaging service

2017-01-03 Thread Xiaorui Wang (JIRA)

 [ 
https://issues.apache.org/jira/browse/ROCKETMQ-17?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Xiaorui Wang updated ROCKETMQ-17:
-
Description: 
*Openmessaging*
Openmessaging is a redefinition of the application of the access message 
service programming API standard. It is only API, non wire-level protocol. 
Openmessaging covers large data message processing, stream computing message 
processing, the traditional transaction model of message processing.
Openmessaging provides API for all major programming languages, such as Java, 
dotnet, CPP, go, python, nodejs, PHP, etc..

*openrelay*
openrelay is a messaging service call through to simulate a API programming 
standard, because it's service provider is more like a message consumer, so 
there is no need to listen port, communication with the broker via the reverse 
proxy mode, therefore it can make two pass through the network not to penetrate 
the news network, and the use of and like the most simple service call.
Openrelay only defines the programming API standard, which is also cross 
language, including Java, dotnet, CPP, go, python, nodejs, PHP, etc., which 
does not contain wire level protocols.


*Why should provide the set of openmessaging programming API 
standard?*
We hope to have more users to use rocketmq, these users including CPP, dotnet, 
Java and other programmers, we know that the programmer in the selection of a 
basic middleware, especially concerns one day in the future if there is a 
better product or the selected product is not good enough, how can not change 
the cable has a large number of applications on the code next, moving to new 
products. With openmessaging, at least to provide users with a way to regret, 
so there may be more users choose to use openmessaging to access rocketmq. 
Because openmessaging is a product of independent programming of API, we 
believe that the open source community there will be more people involved, 
through to other products, such as ActiveMQ, Kafka, RabbitMQ with openmessaging 
implementation, even through openmessaging and HBase, Hadoop, storm, 
integration, as long as the realization of time, may be able to run at all news 
product.

{color:red}
This is our original intention to design openmessaging and openrelay.`
{color}

*RocketMQ will be the first to support openmessaging & openrelay standards*




  was:
*Openmessaging*
Openmessaging is a redefinition of the application of the access message 
service programming API standard. It is only API, non line level protocol. 
Openmessaging covers large data message processing, stream computing message 
processing, the traditional transaction model of message processing.
Openmessaging provides API for all major programming languages, such as Java, 
dotnet, CPP, go, python, nodejs, PHP, etc..

*openrelay*
openrelay is a messaging service call through to simulate a API programming 
standard, because it's service provider is more like a message consumer, so 
there is no need to listen port, communication with the broker via the reverse 
proxy mode, therefore it can make two pass through the network not to penetrate 
the news network, and the use of and like the most simple service call.
Openrelay only defines the programming API standard, which is also cross 
language, including Java, dotnet, CPP, go, python, nodejs, PHP, etc., which 
does not contain wire level protocols.


*Why should provide the set of openmessaging programming API 
standard?*
We hope to have more users to use rocketmq, these users including CPP, dotnet, 
Java and other programmers, we know that the programmer in the selection of a 
basic middleware, especially concerns one day in the future if there is a 
better product or the selected product is not good enough, how can not change 
the cable has a large number of applications on the code next, moving to new 
products. With openmessaging, at least to provide users with a way to regret, 
so there may be more users choose to use openmessaging to access rocketmq. 
Because openmessaging is a product of independent programming of API, we 
believe that the open source community there will be more people involved, 
through to other products, such as ActiveMQ, Kafka, RabbitMQ with openmessaging 
implementation, even through openmessaging and HBase, Hadoop, storm, 
integration, as long as the realization of time, may be able to run at all news 
product.

{color:red}
This is our original intention to design openmessaging and openrelay.`
{color}

*RocketMQ will be the first to support openmessaging & openrelay standards*





> Develop a client api open standard for distributed messaging service
> 
>
> Key: ROCKETMQ-17
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-17
> Project: Apache RocketMQ
>  Issue Type: New Feature
>Affects Versions: 

[jira] [Updated] (ROCKETMQ-17) Develop a client api open standard for distributed messaging service

2017-01-03 Thread Xiaorui Wang (JIRA)

 [ 
https://issues.apache.org/jira/browse/ROCKETMQ-17?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Xiaorui Wang updated ROCKETMQ-17:
-
Description: 
*Openmessaging*
Openmessaging is a redefinition of the application of the access message 
service programming API standard. It is only API, non line level protocol. 
Openmessaging covers large data message processing, stream computing message 
processing, the traditional transaction model of message processing.
Openmessaging provides API for all major programming languages, such as Java, 
dotnet, CPP, go, python, nodejs, PHP, etc..

*openrelay*
openrelay is a messaging service call through to simulate a API programming 
standard, because it's service provider is more like a message consumer, so 
there is no need to listen port, communication with the broker via the reverse 
proxy mode, therefore it can make two pass through the network not to penetrate 
the news network, and the use of and like the most simple service call.
Openrelay only defines the programming API standard, which is also cross 
language, including Java, dotnet, CPP, go, python, nodejs, PHP, etc., which 
does not contain wire level protocols.


*Why should provide the set of openmessaging programming API 
standard?*
We hope to have more users to use rocketmq, these users including CPP, dotnet, 
Java and other programmers, we know that the programmer in the selection of a 
basic middleware, especially concerns one day in the future if there is a 
better product or the selected product is not good enough, how can not change 
the cable has a large number of applications on the code next, moving to new 
products. With openmessaging, at least to provide users with a way to regret, 
so there may be more users choose to use openmessaging to access rocketmq. 
Because openmessaging is a product of independent programming of API, we 
believe that the open source community there will be more people involved, 
through to other products, such as ActiveMQ, Kafka, RabbitMQ with openmessaging 
implementation, even through openmessaging and HBase, Hadoop, storm, 
integration, as long as the realization of time, may be able to run at all news 
product.

{color:red}
This is our original intention to design openmessaging and openrelay.`
{color}

*RocketMQ will be the first to support openmessaging & openrelay standards*




  was:
*Openmessaging*
Openmessaging is a redefinition of the application of the access message 
service programming API standard. It is only API, non line level protocol. 
Openmessaging covers large data message processing, stream computing message 
processing, the traditional transaction model of message processing.
Openmessaging provides API for all major programming languages, such as Java, 
dotnet, CPP, go, python, nodejs, PHP, etc..

*openrelay*
openrelay is a messaging service call through to simulate a API programming 
standard, because it's service provider is more like a message consumer, so 
there is no need to listen port, communication with the broker via the reverse 
proxy mode, therefore it can make two pass through the network not to penetrate 
the news network, and the use of and like the most simple service call.
Openrelay only defines the programming API standard, which is also cross 
language, including Java, dotnet, CPP, go, python, nodejs, PHP, etc., which 
does not contain wire level protocols.


*Why should provide the set of openmessaging programming API 
standard?*
We hope to have more users to use rocketmq, these users including CPP, dotnet, 
Java and other programmers, we know that the programmer in the selection of a 
basic middleware, especially concerns one day in the future if there is a 
better product or the selected product is not good enough, how can not change 
the cable has a large number of applications on the code next, moving to new 
products. With openmessaging, at least to provide users with a way to regret, 
so there may be more users choose to use openmessaging to access rocketmq. 
Because openmessaging is a product of independent programming of API, we 
believe that the open source community there will be more people involved, 
through to other products, such as ActiveMQ, Kafka, RabbitMQ with openmessaging 
implementation, even through openmessaging and HBase, Hadoop, storm, 
integration, as long as the realization of time, may be able to run at all news 
product.

{color:red}
This is our original intention to design openmessaging.`
{color}

*RocketMQ will be the first to support openmessaging & openrelay standards*





> Develop a client api open standard for distributed messaging service
> 
>
> Key: ROCKETMQ-17
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-17
> Project: Apache RocketMQ
>  Issue Type: New Feature
>Affects Versions: 4.1.0-incubating
> 

[jira] [Created] (ROCKETMQ-28) Transportation Layer Security

2017-01-03 Thread Zhanhui Li (JIRA)
Zhanhui Li created ROCKETMQ-28:
--

 Summary: Transportation Layer Security
 Key: ROCKETMQ-28
 URL: https://issues.apache.org/jira/browse/ROCKETMQ-28
 Project: Apache RocketMQ
  Issue Type: New Feature
  Components: rocketmq-remoting
Reporter: Zhanhui Li
Assignee: vongosling


RocketMQ delivers data in clear text for now, which requires internal network 
environment. As use scenarios expand, end-to-end security is in bad need. This 
issue is to introduce features making RocketMQ security for various use cases 
and sacrificing as few as possible.



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[jira] [Commented] (ROCKETMQ-5) Avoid creating directories in UtilAll#getDiskPartitionSpaceUsedPercent()

2017-01-03 Thread ASF GitHub Bot (JIRA)

[ 
https://issues.apache.org/jira/browse/ROCKETMQ-5?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15794632#comment-15794632
 ] 

ASF GitHub Bot commented on ROCKETMQ-5:
---

Github user asfgit closed the pull request at:

https://github.com/apache/incubator-rocketmq/pull/23


> Avoid creating directories in UtilAll#getDiskPartitionSpaceUsedPercent()
> 
>
> Key: ROCKETMQ-5
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-5
> Project: Apache RocketMQ
>  Issue Type: Bug
>Reporter: Roman Shtykh
>Assignee: Roman Shtykh
>
> Since {{UtilAll#getDiskPartitionSpaceUsedPercent()}} is a diagnostic method, 
> rather than creating a directory if it is not found, produce an error log 
> that the directory is supposed to exist and return {{-1}}.



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[jira] [Commented] (ROCKETMQ-5) Avoid creating directories in UtilAll#getDiskPartitionSpaceUsedPercent()

2017-01-03 Thread ASF subversion and git services (JIRA)

[ 
https://issues.apache.org/jira/browse/ROCKETMQ-5?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15794631#comment-15794631
 ] 

ASF subversion and git services commented on ROCKETMQ-5:


Commit 9cb0a0cd46cf91b324b7c6c66d7479d21073d6f6 in incubator-rocketmq's branch 
refs/heads/master from shroman
[ https://git-wip-us.apache.org/repos/asf?p=incubator-rocketmq.git;h=9cb0a0c ]

[ROCKETMQ-5] Avoid creating directories in 
UtilAll#getDiskPartitionSpaceUsedPercent(), closes apache/incubator-rocketmq#23


> Avoid creating directories in UtilAll#getDiskPartitionSpaceUsedPercent()
> 
>
> Key: ROCKETMQ-5
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-5
> Project: Apache RocketMQ
>  Issue Type: Bug
>Reporter: Roman Shtykh
>Assignee: Roman Shtykh
>
> Since {{UtilAll#getDiskPartitionSpaceUsedPercent()}} is a diagnostic method, 
> rather than creating a directory if it is not found, produce an error log 
> that the directory is supposed to exist and return {{-1}}.



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[jira] [Commented] (ROCKETMQ-17) Develop a client api open standard for distributed messaging service

2017-01-03 Thread ASF subversion and git services (JIRA)

[ 
https://issues.apache.org/jira/browse/ROCKETMQ-17?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15794528#comment-15794528
 ] 

ASF subversion and git services commented on ROCKETMQ-17:
-

Commit 159804d9123b780e7a3aaf019127f460b0e88b18 in incubator-rocketmq's branch 
refs/heads/spec from [~vintagewang]
[ https://git-wip-us.apache.org/repos/asf?p=incubator-rocketmq.git;h=159804d ]

[ROCKETMQ-17] Develop a vendor-neutral open standard for distributed messaging: 
refactor producer
ASF JIRA: https://issues.apache.org/jira/browse/ROCKETMQ-17


> Develop a client api open standard for distributed messaging service
> 
>
> Key: ROCKETMQ-17
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-17
> Project: Apache RocketMQ
>  Issue Type: New Feature
>Affects Versions: 4.1.0-incubating
>Reporter: Xiaorui Wang
>Assignee: Xiaorui Wang
>
> We named this new feature openmessaging & openrelay. 
>* openmessaging is a new, open distributed messaging client-api standard 
> for distributed application. 
>* openrelay is a client-api standard for using messaging to simulate 
> service invocations that can penetrate firewalls in complex network 
> environments
> This standard can better cover the field of distributed message programming, 
> large data message programming, flow computing message programming, etc. 
> RocketMQ will be the first to support openmessaging & openrelay standards



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[jira] [Commented] (ROCKETMQ-17) Develop a client api open standard for distributed messaging service

2017-01-03 Thread ASF subversion and git services (JIRA)

[ 
https://issues.apache.org/jira/browse/ROCKETMQ-17?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15794530#comment-15794530
 ] 

ASF subversion and git services commented on ROCKETMQ-17:
-

Commit c25253a7873faaa55a2ff81799db71bab8c35c76 in incubator-rocketmq's branch 
refs/heads/spec from [~vintagewang]
[ https://git-wip-us.apache.org/repos/asf?p=incubator-rocketmq.git;h=c25253a ]

[ROCKETMQ-17] Develop a vendor-neutral open standard for distributed messaging: 
set BytesMessage.setbody method, and return BytesMessage
ASF JIRA: https://issues.apache.org/jira/browse/ROCKETMQ-17


> Develop a client api open standard for distributed messaging service
> 
>
> Key: ROCKETMQ-17
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-17
> Project: Apache RocketMQ
>  Issue Type: New Feature
>Affects Versions: 4.1.0-incubating
>Reporter: Xiaorui Wang
>Assignee: Xiaorui Wang
>
> We named this new feature openmessaging & openrelay. 
>* openmessaging is a new, open distributed messaging client-api standard 
> for distributed application. 
>* openrelay is a client-api standard for using messaging to simulate 
> service invocations that can penetrate firewalls in complex network 
> environments
> This standard can better cover the field of distributed message programming, 
> large data message programming, flow computing message programming, etc. 
> RocketMQ will be the first to support openmessaging & openrelay standards



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[jira] [Commented] (ROCKETMQ-17) Develop a client api open standard for distributed messaging service

2017-01-03 Thread ASF subversion and git services (JIRA)

[ 
https://issues.apache.org/jira/browse/ROCKETMQ-17?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15794533#comment-15794533
 ] 

ASF subversion and git services commented on ROCKETMQ-17:
-

Commit 08ab1ae264ab9d6943d99372eb6034e98afd22a8 in incubator-rocketmq's branch 
refs/heads/spec from [~vintagewang]
[ https://git-wip-us.apache.org/repos/asf?p=incubator-rocketmq.git;h=08ab1ae ]

[ROCKETMQ-17] openmessaging: refactor BytesMessage
ASF JIRA: https://issues.apache.org/jira/browse/ROCKETMQ-17


> Develop a client api open standard for distributed messaging service
> 
>
> Key: ROCKETMQ-17
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-17
> Project: Apache RocketMQ
>  Issue Type: New Feature
>Affects Versions: 4.1.0-incubating
>Reporter: Xiaorui Wang
>Assignee: Xiaorui Wang
>
> We named this new feature openmessaging & openrelay. 
>* openmessaging is a new, open distributed messaging client-api standard 
> for distributed application. 
>* openrelay is a client-api standard for using messaging to simulate 
> service invocations that can penetrate firewalls in complex network 
> environments
> This standard can better cover the field of distributed message programming, 
> large data message programming, flow computing message programming, etc. 
> RocketMQ will be the first to support openmessaging & openrelay standards



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[jira] [Commented] (ROCKETMQ-17) Develop a client api open standard for distributed messaging service

2017-01-03 Thread ASF subversion and git services (JIRA)

[ 
https://issues.apache.org/jira/browse/ROCKETMQ-17?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15794525#comment-15794525
 ] 

ASF subversion and git services commented on ROCKETMQ-17:
-

Commit 86f4e26171935ed92c0341c56fa60e4033aa40af in incubator-rocketmq's branch 
refs/heads/spec from [~vintagewang]
[ https://git-wip-us.apache.org/repos/asf?p=incubator-rocketmq.git;h=86f4e26 ]

[ROCKETMQ-17] Develop a vendor-neutral open standard for distributed messaging: 
Add the asynchronous send message mechanism
ASF JIRA: https://issues.apache.org/jira/browse/ROCKETMQ-17


> Develop a client api open standard for distributed messaging service
> 
>
> Key: ROCKETMQ-17
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-17
> Project: Apache RocketMQ
>  Issue Type: New Feature
>Affects Versions: 4.1.0-incubating
>Reporter: Xiaorui Wang
>Assignee: Xiaorui Wang
>
> We named this new feature openmessaging & openrelay. 
>* openmessaging is a new, open distributed messaging client-api standard 
> for distributed application. 
>* openrelay is a client-api standard for using messaging to simulate 
> service invocations that can penetrate firewalls in complex network 
> environments
> This standard can better cover the field of distributed message programming, 
> large data message programming, flow computing message programming, etc. 
> RocketMQ will be the first to support openmessaging & openrelay standards



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[jira] [Commented] (ROCKETMQ-19) Thread-unsafe in MQAdminImpl#queryMessage

2017-01-03 Thread ASF GitHub Bot (JIRA)

[ 
https://issues.apache.org/jira/browse/ROCKETMQ-19?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15794501#comment-15794501
 ] 

ASF GitHub Bot commented on ROCKETMQ-19:


Github user Zhang-Ke commented on the issue:

https://github.com/apache/incubator-rocketmq/pull/17
  
Duplicated with  [https://github.com/apache/incubator-rocketmq/pull/22]PR 
#22 (url)


> Thread-unsafe in MQAdminImpl#queryMessage
> -
>
> Key: ROCKETMQ-19
> URL: https://issues.apache.org/jira/browse/ROCKETMQ-19
> Project: Apache RocketMQ
>  Issue Type: Bug
>  Components: rocketmq-client
>Affects Versions: 4.0.0-incubating
>Reporter: ZhangKe
>Assignee: Xiaorui Wang
> Fix For: 4.0.0-incubating
>
>
> LinkedList.add() is not thread-safe, so it must be synchronized externally 
> when using concurrently. 



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