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体验新版 GitCode,发现更多精彩内容 >>
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a4edc222
编写于
7月 31, 2013
作者:
F
fjy
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电子邮件补丁
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fix RTR comments
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215d147a
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indexing-service/src/main/java/com/metamx/druid/indexing/coordinator/RemoteTaskRunner.java
...m/metamx/druid/indexing/coordinator/RemoteTaskRunner.java
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indexing-service/src/main/java/com/metamx/druid/indexing/coordinator/RemoteTaskRunner.java
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@@ -75,9 +75,10 @@ import java.util.concurrent.atomic.AtomicReference;
/**
* The RemoteTaskRunner's primary responsibility is to assign tasks to worker nodes.
* The RemoteTaskRunner keeps track of which workers are running which tasks and manages coordinator and
* worker interactions over Zookeeper. The RemoteTaskRunner is event driven and updates state according to ephemeral
* node changes in ZK.
* The RemoteTaskRunner uses Zookeeper to keep track of which workers are running which tasks. Tasks are assigned by
* creating ephemeral nodes in ZK that workers must remove. Workers announce the statuses of the tasks they are running.
* Once a task completes, it is up to the RTR to remove the task status and run any necessary cleanup.
* The RemoteTaskRunner is event driven and updates state according to ephemeral node changes in ZK.
* <p/>
* The RemoteTaskRunner will assign tasks to a node until the node hits capacity. At that point, task assignment will
* fail. The RemoteTaskRunner depends on another component to create additional worker resources.
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