[jira] [Updated] (YARN-1641) ZK store should attempt a write periodically to ensure it is still Active

2014-02-11 Thread Karthik Kambatla (JIRA)

 [ 
https://issues.apache.org/jira/browse/YARN-1641?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Karthik Kambatla updated YARN-1641:
---

Attachment: yarn-1641-2.patch

Added thread name. 

 ZK store should attempt a write periodically to ensure it is still Active
 -

 Key: YARN-1641
 URL: https://issues.apache.org/jira/browse/YARN-1641
 Project: Hadoop YARN
  Issue Type: Sub-task
  Components: resourcemanager
Affects Versions: 2.3.0
Reporter: Karthik Kambatla
Assignee: Karthik Kambatla
 Attachments: yarn-1641-1.patch, yarn-1641-2.patch


 Fencing in ZK store kicks in when the RM tries to write something to the 
 store. If the RM doesn't write anything to the store, it doesn't get fenced 
 and can continue to assume being the Active. 
 By periodically writing a file (say, every RM_ZK_TIMEOUT_MS seconds), we can 
 ensure it gets fenced.



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[jira] [Updated] (YARN-1641) ZK store should attempt a write periodically to ensure it is still Active

2014-02-10 Thread Karthik Kambatla (JIRA)

 [ 
https://issues.apache.org/jira/browse/YARN-1641?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Karthik Kambatla updated YARN-1641:
---

Summary: ZK store should attempt a write periodically to ensure it is still 
Active  (was: ZK store - periodically create a dummy file to kick in fencing)

 ZK store should attempt a write periodically to ensure it is still Active
 -

 Key: YARN-1641
 URL: https://issues.apache.org/jira/browse/YARN-1641
 Project: Hadoop YARN
  Issue Type: Sub-task
  Components: resourcemanager
Affects Versions: 2.3.0
Reporter: Karthik Kambatla
Assignee: Karthik Kambatla
 Attachments: yarn-1641-1.patch


 Fencing in ZK store kicks in when the RM tries to write something to the 
 store. If the RM doesn't write anything to the store, it doesn't get fenced 
 and can continue to assume being the Active. 
 By periodically writing a file (say, every RM_ZK_TIMEOUT_MS seconds), we can 
 ensure it gets fenced.



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