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https://issues.apache.org/jira/browse/TAJO-1221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14251081#comment-14251081
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Hudson commented on TAJO-1221:
------------------------------
SUCCESS: Integrated in Tajo-master-build #508 (See
[https://builds.apache.org/job/Tajo-master-build/508/])
TAJO-1221: HA TajoClient should not connect TajoMaster at the first. (jaehwa)
(blrunner: rev 2548768cfed8f018727f6f054317b2adb4d7f485)
* tajo-core/src/main/java/org/apache/tajo/master/querymaster/QueryMaster.java
* tajo-core/src/test/java/org/apache/tajo/TajoTestingCluster.java
* tajo-common/src/main/java/org/apache/tajo/util/HAServiceUtil.java
* tajo-core/src/main/java/org/apache/tajo/worker/TajoResourceAllocator.java
*
tajo-catalog/tajo-catalog-client/src/main/java/org/apache/tajo/catalog/AbstractCatalogClient.java
* tajo-client/src/main/java/org/apache/tajo/cli/tools/TajoHAAdmin.java
* tajo-core/src/main/java/org/apache/tajo/worker/WorkerHeartbeatService.java
* tajo-core/src/main/java/org/apache/tajo/worker/TajoWorker.java
* tajo-client/src/main/java/org/apache/tajo/client/TajoHAClientUtil.java
* CHANGES
* tajo-client/src/main/java/org/apache/tajo/cli/tools/TajoAdmin.java
*
tajo-core/src/main/java/org/apache/tajo/master/querymaster/QueryMasterTask.java
*
tajo-core/src/main/java/org/apache/tajo/master/querymaster/QueryJobManager.java
* tajo-core/src/main/java/org/apache/tajo/master/TajoContainerProxy.java
* tajo-core/src/main/java/org/apache/tajo/master/ha/HAServiceHDFSImpl.java
*
tajo-core/src/main/java/org/apache/tajo/worker/rule/ConnectivityCheckerRuleForTajoWorker.java
* tajo-common/src/main/java/org/apache/tajo/ha/HAServiceUtil.java
* tajo-core/src/test/java/org/apache/tajo/master/ha/TestHAServiceHDFSImpl.java
* tajo-client/src/main/java/org/apache/tajo/client/TajoClientImpl.java
* tajo-client/src/main/java/org/apache/tajo/client/SessionConnection.java
* tajo-common/src/main/java/org/apache/tajo/ha/HAConstants.java
> HA TajoClient should not connect TajoMaster at the first.
> ---------------------------------------------------------
>
> Key: TAJO-1221
> URL: https://issues.apache.org/jira/browse/TAJO-1221
> Project: Tajo
> Issue Type: Improvement
> Components: tajo master
> Reporter: Hyunsik Choi
> Assignee: Jaehwa Jung
> Labels: failure-handling, fault-tolerance, high-availability
> Fix For: 0.9.1
>
>
> *Problem*
> We TajoClient is opened, TajoClient initially tries to connect TajoMaster.
> This manner does not guarantee high availability. A known TajoMaster host may
> be not work anymore. So, this manner still has some failure point.
> Also, this manner prohibits a Tajo cluster to run on some dynamic cluster
> environments like Yarn.
> *Solution*
> Tajo HA client should get directly TajoMaster addresses and others from HA
> component without contacting TajoMaster.
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