[jira] [Created] (HELIX-750) Implement Helix View Aggregator Service

2018-08-21 Thread Harry Zhang (JIRA)
Harry Zhang created HELIX-750:
-

 Summary: Implement Helix View Aggregator Service
 Key: HELIX-750
 URL: https://issues.apache.org/jira/browse/HELIX-750
 Project: Apache Helix
  Issue Type: Task
Reporter: Harry Zhang
Assignee: Harry Zhang


I have sent out the design for Helix view aggregation service to serve cross 
data center information in a more convenient way 
([https://github.com/apache/helix/pull/266)]

This ticket is to implement the service based on approved design.



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[jira] [Created] (HELIX-775) Task driver should support add/get task framework user content

2018-10-31 Thread Harry Zhang (JIRA)
Harry Zhang created HELIX-775:
-

 Summary: Task driver should support add/get task framework user 
content
 Key: HELIX-775
 URL: https://issues.apache.org/jira/browse/HELIX-775
 Project: Apache Helix
  Issue Type: Task
Reporter: Harry Zhang
Assignee: Harry Zhang


Task driver should support add/get task framework user content at 
workflow/job/task levels

 

AC:
 * finish implementation
 * add tests



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[jira] [Created] (HELIX-772) Support TaskDriver.addUserContent() api

2018-10-30 Thread Harry Zhang (JIRA)
Harry Zhang created HELIX-772:
-

 Summary: Support TaskDriver.addUserContent() api
 Key: HELIX-772
 URL: https://issues.apache.org/jira/browse/HELIX-772
 Project: Apache Helix
  Issue Type: Bug
Reporter: Harry Zhang
Assignee: Harry Zhang


Need to support add user content in task driver

 

AC:
 * implement APi
 * add test

 



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[jira] [Created] (HELIX-771) More detailed top state handoff metrics

2018-10-30 Thread Harry Zhang (JIRA)
Harry Zhang created HELIX-771:
-

 Summary: More detailed top state handoff metrics
 Key: HELIX-771
 URL: https://issues.apache.org/jira/browse/HELIX-771
 Project: Apache Helix
  Issue Type: Bug
  Components: helix-core
Reporter: Harry Zhang
Assignee: Harry Zhang


To define top state handoff SLA, we need some more detailed data:
 * graceful top state handoff (i.e. disable instance / resource / etc, both 
Helix and e2e latency)
 * abrupt top state handoff (i.e. node crash)

AC:
 - prepare metrics, test, code complete



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[jira] [Created] (HELIX-781) Implement Helix cluster view aggregator

2018-11-01 Thread Harry Zhang (JIRA)
Harry Zhang created HELIX-781:
-

 Summary: Implement Helix cluster view aggregator
 Key: HELIX-781
 URL: https://issues.apache.org/jira/browse/HELIX-781
 Project: Apache Helix
  Issue Type: Task
Reporter: Harry Zhang
Assignee: Harry Zhang






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[jira] [Created] (HELIX-779) Maintenance rebalancer should not clear preference list in ideal state

2018-11-01 Thread Harry Zhang (JIRA)
Harry Zhang created HELIX-779:
-

 Summary: Maintenance rebalancer should not clear preference list 
in ideal state
 Key: HELIX-779
 URL: https://issues.apache.org/jira/browse/HELIX-779
 Project: Apache Helix
  Issue Type: Bug
  Components: helix-core
Reporter: Harry Zhang
Assignee: Harry Zhang


Setting list fields to empty map will prevent newly added and initially 
rebalanced resources during maintenance mode from getting re-balanced after 
cluster exists maintenance mode.
The right thing to do is to clear every preference list.



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[jira] [Created] (HELIX-780) Support get/add rest api for workflow/job/task user content

2018-11-01 Thread Harry Zhang (JIRA)
Harry Zhang created HELIX-780:
-

 Summary: Support get/add rest api for workflow/job/task user 
content
 Key: HELIX-780
 URL: https://issues.apache.org/jira/browse/HELIX-780
 Project: Apache Helix
  Issue Type: Task
Reporter: Harry Zhang
Assignee: Harry Zhang


Need to support get/add rest api for workflow/job/task user content

AC:
 * finish implementation
 * test code



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[jira] [Created] (HELIX-753) record top state handoff finished in single cluster data cache refresh

2018-09-21 Thread Harry Zhang (JIRA)
Harry Zhang created HELIX-753:
-

 Summary: record top state handoff finished in single cluster data 
cache refresh
 Key: HELIX-753
 URL: https://issues.apache.org/jira/browse/HELIX-753
 Project: Apache Helix
  Issue Type: Bug
Reporter: Harry Zhang
Assignee: Harry Zhang


Currently we are calculating top state handoff duration by doing the following:
 - record missing top state when we see a top state missing
 - record top state come back when we see it come back
 - report top state handoff duration

This is perfectly fine for non-P2P state transitions as the entire top state 
handoff process will always finish for >= 2 pipeline runs. However, for P2P 
enabled clusters, top state handoff are quick, and if it is quicker than 
cluster data refresh stage latency, we will lose a lot of short top state 
handoffs, which make the number miserable on ingraph.

We need to revise top state handoff metrics implementation so we don't lose 
data point statistically (i.e. we are losing all short handoffs now).

AC:
 - revise impl so we catch those short top state hand-offs
 - write new tests to catch the fix if needed



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[jira] [Updated] (HELIX-753) Record top state handoff finished in single cluster data cache refresh

2018-09-21 Thread Harry Zhang (JIRA)


 [ 
https://issues.apache.org/jira/browse/HELIX-753?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Harry Zhang updated HELIX-753:
--
Summary: Record top state handoff finished in single cluster data cache 
refresh  (was: record top state handoff finished in single cluster data cache 
refresh)

> Record top state handoff finished in single cluster data cache refresh
> --
>
> Key: HELIX-753
> URL: https://issues.apache.org/jira/browse/HELIX-753
> Project: Apache Helix
>  Issue Type: Bug
>Reporter: Harry Zhang
>Assignee: Harry Zhang
>Priority: Major
>
> Currently we are calculating top state handoff duration by doing the 
> following:
>  - record missing top state when we see a top state missing
>  - record top state come back when we see it come back
>  - report top state handoff duration
> This is perfectly fine for non-P2P state transitions as the entire top state 
> handoff process will always finish for >= 2 pipeline runs. However, for P2P 
> enabled clusters, top state handoff are quick, and if it is quicker than 
> cluster data refresh stage latency, we will lose a lot of short top state 
> handoffs, which make the number miserable on ingraph.
> We need to revise top state handoff metrics implementation so we don't lose 
> data point statistically (i.e. we are losing all short handoffs now).
> AC:
>  - revise impl so we catch those short top state hand-offs
>  - write new tests to catch the fix if needed



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